4096AB51K00050

EMI CATALOG www.lairdtech.com ABOUT LAIRD Laird is a global technology business focused on enabling wireless communication and smart systems, and providing components and systems that protect electronics. Laird operates through two divisions, Wireless Systems and Performance Materials. Wireless Systems solutions include antenna systems, embedded wireless modules, telematics products and wireless automation and control solutions. Performance Materials solutions include electromagnetic interference shielding, thermal management and signal integrity products. As a leader in the design, supply and support of innovative technology, our products allow people, organisations, machines and applications to connect effectively, helping to build a world where smart technology transforms the way of life. Custom products are supplied to major sectors of the electronics industry including the handset, telecommunications, IT, automotive, public safety, consumer, medical, rail, mining and industrial markets. Providing value and differentiation to our customers though innovation, reliable fulfilment and speed, Laird PLC is listed and headquartered in London, and employs over 9,000 people in more than 58 facilities located in 18 countries. . TABLE OF CONTENTS EMI INTRODUCTION 2 EMI SUMMARY 3 BOARD LEVEL SHIELDS 6 Product Selection Guide 6 Introduction 8 Standard Design Shields 9 EZ Peel™ 11 Rigid Corner 11 ReCovr™ 12 ReMovl 12 Overview 13 FINGERSTOCK Product Selection Guide Introduction Mounting Methods Ordering Information UltraSoft® Series Recyclable Clean Copper Slot Mount Series Dual Slot Series Teardrop Series Compact PCI Symmetrical Mount Alternate Slot Series Variable Slot Mount Symmetrical (S3) Slotted Shielding Solid Top (S3) Symmetrical Slotted Shielding Clip-On Symmetrical Shielding No Snag Gasket All-Purpose Series Clip-On Series Low Profile Hook-On Gasket Low Profile Gasket Large Enclosure Series Double-Sided Contact Series Foldover Series Stainless Steel I/O Shielding Flexible Low Compression Series Clip-On Twist Series Twist Series Divider Edge Shielding Card Guide Clip-On Clip-On Perpendicular Shielding Clip-On Perpendicular Grounding Strip Clip-On Longitudinal Grounding Strip Mini-Longitudinal Grounding Gasket Longitudinal Grounding Series Custom Stamping Contact Strips / Contact Rings IEEE 1394 Horizontal Connector Gasket DIN Connector Series USB Connector www.lairdtech.com 14 14 15 16 17 18 18 19 21 21 22 22 23 24 25 26 27 28 29 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 39 39 40 Fiber Optic Shield 40 GBIC Fiber Optic Shield 40 "D" Connector Shielding / Slotted "D" 41 Precision Stamped Metals 42 Contacts 42 Custom Design 44 Metals Galvanic Compatibility Chart 46 VENT PANELS 48 MaxAir™ 49 Elecro-Air™ 50 Electrovent™ 51 FABRIC-OVER FOAM 52 Product Selection Guide 52 Introduction 54 EcoGreen™ 56 I/O / Gasket Selection Guide 57 Profile Selection Guide 58 I/O Selection Guide 62 Knitted Conductive Gaskets 65 Visual Part Reference Guide 66 Part Number Cross Reference 67 Ultraflex® 68 All Mesh 69 Elastomer Core 70 Electroground® EMI Washers 72 Electromesh® Tape 75 Conductive Fabric 76 MRI "A" Fabric 77 Conductive Tape 78 ELECTRICALLY CONDUCTIVE ELASTOMERS 79 Introduction 79 Product Selection Guide 80 Case Study 81 Visual Part Reference Guide 85 Electroseal™ Conductive Elastomer 86 Extrusions Guide 87 Gemini™ Coextrusions 93 Fabricated Components Guide 95 Metal Impregnated Materials 99 Specialty Products 102 Automated Form-In-Place Gaskets 103 MICROWAVE ABSORBERS Product Selection Guide Design Guide Q-Zorb® 2000 HF Q-Zorb® 3000 HP RFRET 4000 RFLS 5000 Analysis, Test and Prototype Development 105 105 106 109 110 111 112 113 TABLE OF CONTENTS EMI INTRODUCTION 2 EMI SUMMARY 3 BOARD LEVEL SHIELDS 6 Product Selection Guide 6 Introduction 8 Standard Design Shields 9 EZ Peel™ 11 Rigid Corner 11 ReCovr™ 12 ReMovl 12 Overview 13 FINGERSTOCK Product Selection Guide Introduction Mounting Methods Ordering Information UltraSoft® Series Recyclable Clean Copper Slot Mount Series Dual Slot Series Teardrop Series Compact PCI Symmetrical Mount Alternate Slot Series Variable Slot Mount Symmetrical (S3) Slotted Shielding Solid Top (S3) Symmetrical Slotted Shielding Clip-On Symmetrical Shielding No Snag Gasket All-Purpose Series Clip-On Series Low Profile Hook-On Gasket Low Profile Gasket Large Enclosure Series Double-Sided Contact Series Foldover Series Stainless Steel I/O Shielding Flexible Low Compression Series Clip-On Twist Series Twist Series Divider Edge Shielding Card Guide Clip-On Clip-On Perpendicular Shielding Clip-On Perpendicular Grounding Strip Clip-On Longitudinal Grounding Strip Mini-Longitudinal Grounding Gasket Longitudinal Grounding Series Custom Stamping Contact Strips / Contact Rings IEEE 1394 Horizontal Connector Gasket DIN Connector Series USB Connector www.lairdtech.com 14 14 15 16 17 18 18 19 21 21 22 22 23 24 25 26 27 28 29 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 39 39 40 Fiber Optic Shield 40 GBIC Fiber Optic Shield 40 "D" Connector Shielding / Slotted "D" 41 Precision Stamped Metals 42 Contacts 42 Custom Design 44 Metals Galvanic Compatibility Chart 46 VENT PANELS 48 MaxAir™ 49 Elecro-Air™ 50 Electrovent™ 51 FABRIC-OVER FOAM 52 Product Selection Guide 52 Introduction 54 EcoGreen™ 56 I/O / Gasket Selection Guide 57 Profile Selection Guide 58 I/O Selection Guide 62 Knitted Conductive Gaskets 65 Visual Part Reference Guide 66 Part Number Cross Reference 67 Ultraflex® 68 All Mesh 69 Elastomer Core 70 Electroground® EMI Washers 72 Electromesh® Tape 75 Conductive Fabric 76 MRI "A" Fabric 77 Conductive Tape 78 ELECTRICALLY CONDUCTIVE ELASTOMERS 79 Introduction 79 Product Selection Guide 80 Case Study 81 Visual Part Reference Guide 85 Electroseal™ Conductive Elastomer 86 Extrusions Guide 87 Gemini™ Coextrusions 93 Fabricated Components Guide 95 Metal Impregnated Materials 99 Specialty Products 102 Automated Form-In-Place Gaskets 103 MICROWAVE ABSORBERS Product Selection Guide Design Guide Q-Zorb® 2000 HF Q-Zorb® 3000 HP RFRET 4000 RFLS 5000 Analysis, Test and Prototype Development 105 105 106 109 110 111 112 113 EMI ESSENTIALS EMI INTRODUCTION Overview of EMC/RFI Issues The phenomenon of electromagnetic interference (EMI) is familiar to virtually everyone, even if they do not understand the underlying principles. Most people have witnessed firsthand the effects of interference. To control EMI, government organizations, such as the FCC, CSA, and EEC, mandate that manufacturers may not design, produce or sell electronic equipment that jams the public broadcast services. In other instances, however, EMI can constitute more than a mere nuisance. The military and medical communities, for example, require trouble-free operation of their electronic equipment in adverse electromagnetic environments since malfunctions could jeopardize missions and personnel. The European Union’s EMC directive also mandates that “the apparatus has an adequate level of intrinsic immunity to electromagnetic disturbance to enable it to operate as intended”. EMC Design of High Speed Systems The interference and susceptibility (immunity) effects of electronic apparatus are created by time-variant electromagnetic fields which may be propagated along a conducting medium or by radiation through space. Because the source of the conducted and radiated interference energy levels may be related, a coordinated systems design effort is required to reduce these effects. A design program for an equipment item that must meet both an emission and an immunity requirement consists of: • Suppression: Reducing the interference at its source. • Isolation: Isolating the offending circuits by filtering, grounding and shielding. • Desensitization: Increasing the immunity of any susceptible circuits. These three steps should be carried on throughout the entire equipment design and implemented as early as possible within the design program. Effects of Logic Speed The trend in today’s electronic devices is faster, smaller, and digital rather than analog. Most equipment (95%) of today contains digital circuits. Today’s digital designer must create a circuit board that has the lowest possible EMI, combined with the highest possible operating/processing speeds. Design of the PCB is the most critical EMC influencing factor for any system, since virtually all active devices are located on the board. It is the changing current (accelerated electron movement) produced by the active devices that result in EMI. Design Approaches There are two approaches that can be used to reduce the emission from the PC board. The first approach is to operate the circuit at the slowest speeds consistent with the functionality of the system, lay out the PCB with the smallest possible loop areas (especially the high speed devices), and insert suppression components such as filters, ferrite beads, and bypass capacitors into the circuit to reduce its bandwidth. These techniques will result in a desired decrease in the high frequency harmonic amplitudes and circuit bandwidth and a corresponding undesired decrease in both the operating speed and system reliability. The use of slower speeds with reduced bandwidth will help to desensitize the circuit to external susceptibility fields. The second is to use shielding. Shielding is the only non-invasive suppression technique. Since the shielding is not inserted into the circuit, it does not affect the high frequency operating speed of the system, nor does it affect the operation of the system should changes be made to the design in the future. In addition, shielding does not create timing problems and waveform distortion; it does not decrease system reliability; and it reduces crosstalk. Plus, shielding works for both emission suppression as well as susceptibility (immunity) problems. 2 Even with the overall advantages of shielding, the most cost-effective approach is to use a combination of circuit suppression/hardening and shielding. www.lairdtech.com Fabric-Over-Foam and Conductive Foam Wire Mesh Tape Applications • Shielding or grounding of computer and telecommunication equipment seams and apertures • Covers opened infrequently for servicing (6-12 times per year) • Long lasting resiliency is ideal for highly sensitive components in permanent or semi-permanent enclosures • Consistent point-to-point contact for high shielding effectiveness over the life of the gasket • Design flexibility provides grounding and shielding solutions for I/O shielding panels, disk drive insulators, ground planes or circuit boards, electromedical devices, keyboard devices • Mask-and-peel tape for painted electronic enclosures • Cable and wire harness wrapping Features and Benefits Product Highlights • UL 94VO and HB flame retardant • Ideal for applications requiring low pressure force • Self-terminating cut-to lengths • High conductivity and shielding attenuation • Galvanically-compatible with most mating surfaces • High abrasion and shear resistance • Most economical gasket for low-cycling applications • High shielding effectiveness over broad frequency range • Available in wide variety of sizes and shapes • Knit construction for long lasting resiliency • Versatile mounting options • Available with elastomer gasket for moisture and dust sealing • Simple installation • Ideally suited for thin or low-profile applications • Conductive foil tape with release mask for painted enclosures • Tin copper cloth and nickel copper cloth versions provide easy-to-handle alternatives to foils Electrical Shielding Effectiveness Transfer Impedance (500 MHz) >85 dB 90 - 105 dB — H-field (200 MHz) Modified Mil 285 30 - 45 dB 55 - 65 dB — Plane Wave (2 GHz) Modified Mil 285 90 - 100 dB 80 - 115 dB 85 - 95 dB Surface Resistivity 100 dB across a wide spectrum of frequencies (see figure 2). • Prototype samples can be provided quickly utilizing laser technology, CAD/CAM equipment, and customer supplied drawings in DWG®, DXF®, IGS, PRT®, DRW®, STP®, and CT® file formats. • Extremely low compression forces allow for use of lighter materials (see figure 1). • Low Surface Resistivity as low as 0.07 ohms/square dependent on the fabric. Fabric-Over-Foam gaskets provide improved conductivity (ASTM F390). • A wide range of flame retardant gaskets are available (UL recognized per UL94 V0 or UL94 HB). More information is available at ul.com. • Abrasion resistant metallized fabrics show virtually no degradation in shielding performance. • Profile and I/O gaskets are available with a variety of pressure sensitive adhesive (PSA) tapes, including Easy Peel® with extra wide release liner to facilitate quick assembly. • Profile gaskets can be cut to specified lengths, kiss-cut on release liner, or mitered to form frame configurations. • UL94 V0 and Halogen-free gaskets to meet stringent environmental / safety requirements • Urethane core provide low compression set ensuring long-term reliability of gasket performance. Contact Engineering for profile specific data. • Service temperatures from -40°F to 158°F (-40°C to 85°C). • Available in Nickel/Copper (Ni/Cu) and Tin/Copper (Sn/Cu) to ensure galvanic compatibility with a wide variety of host materials. Both versions display no significant performance degradation after environmental exposure per the Accelerated Aging Test (ASTM B845-93 Method H). FIGURE 2 Shielding Effectiveness (dB) Shielding Effectiveness per MIL-STD-285 (mod.) D Shape — Profile # 4789 Frequency (MHz) 55 www.lairdtech.com EMI ESSENTIALS ECOGREEN ENVIRONMENTALLY FRIENDLY FABRIC-OVER-FOAM SHIELDING GASKETS TM Laird is pleased to introduce the next generation in RoHS-compliant EMI shielding technology. While Laird Fabric-Over-Foam EMI gaskets are RoHS compliant, we are proactively strengthening our compliancy by engineering halogen-free EcoGreenTM shields. Not only are the patented EcoGreenTM shields environmentally friendly, they offer high EMI shielding effectiveness, extremely low compression forces, abrasion-resistant metallized fabrics, large service temperature ranges, and multiple profile/gasket options. Laird shields are flame retardant and pass the stringent UL94-VO burn test and the whole gasket is Halogen-free. ENVIRONMENT & SAFETY APPLICATIONS • Halogen-free and RoHS compliant; per the IEC 61249-2-21 standard • UL94 V0 PERFORMANCE AND BENEFITS • Profiles and I/O gaskets are available with a pressure sensitive adhesive (PSA) tape • Profiles can be cut to specified lengths, kiss-cut release liner or mitered to form frame configurations HIGH SHIELDING EFFECTIVENESS • Shielding effectiveness of > 100 dB • Extremely low compression forces allow lighter weight materials, with less fastening and hinge hardware. • Low surface resistivity as low as 115* >122* >115* 400 MHz >107* * Values exceed the dynamic range of the test equipment and were measured in actual MRI shielded enclosures. MECHANICAL PROPERTIES Tensile Strength CMD/MD (ASTM D5035) lb./in (N/100 mm) Elongation, MD (ASTM D5035) 20/60 (350/1050) 8% All dimensions shown are in inches (millimeters) unless otherwise specified. 77 www.lairdtech.com EMI ESSENTIALS CONDUCTIVE TAPE CONDUCTIVE FABRIC SHIELDING TAPE Laird conductive fabric shielding tapes offer exceptional conformability and conductivity for dynamic flex applications. Conductive tapes are constructed of nickel/copper metallized fabric with a conductive pressure sensitive adhesive (PSA). This reliable tape design provides outstanding shielding performance while offering superior abrasion and corrosion resistance under high dynamic flex conditions. Significant advantages over other fabric and foil shielding tapes include: • Available UL510 flame rating. • Thinner design provides superior flexibility and durability. • High conductivity and shielding effectiveness. • Adhesive system provides high peel strength. • Easy die-cutting and processing. • Superb adhesion of nickel copper plating. • Eliminates the potential of injury due to the sharp edges of metal foil tapes. EMI shielding tape is available in standard roll widths from 0.394" (10 mm) to 3.937" (100 mm) in 0.197" (5 mm) increments and roll lengths of 65.62' (20 M). Master rolls are available in sizes up to 1.0 meter widths and 20 meter lengths. For your unique design requirements, custom die-cut parts are also available. Some typical applications for EMI shielding tapes include: • Shielding cables on notebook computers, copiers or other electronic equipment. • “Fix-it” applications in test laboratories. • Shielding over a component in which high conformability is essential. • Shielding or grounding in weight sensitive applications. • Shielding or grounding for electronic equipment where vibration may be present during operation. TAPE CONSTRUCTION * Carrier Nickel Copper Ripstop / Tafeta Fabric (1A) Adhesive Conductive Pressure Sensitive Acrylic Adhesive Liner Kraft Paper PERFORMANCE CHARACTERISTICS * 78 Conductive Tape Thickness 0.005 ± 0.0008 inches (0.13 ± 0.02 mm) Tensile Strength (ASTM D5035) 50 lb / in. Weight (LT 500) 2.9 oz./sq. yard (100 grams/sq. Meter) XY Sheet Resistivity (ASTM F390) < 0.03 ohms/sq. Peel Strength 28 oz./in. (8.7 N/25 mm) Abrasion Resistance (ASTM D3886) > 750,000 Cycles Temperature Range 32°F to 176°F (0°C to 80°C) Max. Temperature (short term) 120°C Shielding Effectiveness 100 MHz @ 70 dB 1 GHz @ 80 dB 3 GHz @ 90 dB Z-Axis Resistivity < 0.040 ohms Shelf Life 6 months @ 23°C, 60% R.H. * Properties for standard tapes. Other tape properties available upon request. www.lairdtech.com ORDERING INFORMATION: 86-726 86-785 86-203 86-205 87-580 DS005 D6-785FX 76-750 Standard Tape Standard Tape Black Tape Black Tape UL510 Rated Double Sided Tape Double Sided Tape Thin Tape EMI ESSENTIALS INTRODUCTION TO ELECTRICALLY CONDUCTIVE ELASTOMERS OVERVIEW ELECTROSEAL™ GASKET INTRODUCTION The electrically conductive elastomers are based on dispersed particles in elastomers, oriented wire in solid or sponge elastomers, impregnated wire mesh screens or expanded metals. They provide highly conductive, yet resilient gasketing materials for EMI sealing as well as pressure and environmental sealing. Conductive elastomer gaskets are EMI shielding and sealing devices made from highly conductive, mechanically resilient and conformable vulcanized elastomers. They are available in the following types: Conductive elastomers are used for shielding electronic enclosures against electromagnetic interference (EMI). Usually, the shielding system consists of a conductive gasket sandwiched between a metal housing and lid. The primary function of these gaskets is to provide sufficient electrical conductivity across the enclosure/gasket/lid junction to meet grounding and EMI shielding requirements, as well as prevent intrusion of the fluids into the electrical components. Laird offers conductive elastomers in the following forms: 1. ElectroSeal dispersed filler particles in elastomers 2. ElectroMet oriented wire in solid and sponge elastomers, and impregnated wire mesh and expanded metals 1. 2. 3. 4. 5. 6. Flat gaskets or die-cuts Molded shapes such as O-rings or intricate parts Extruded profiles or strips Vulcanized-to-metal covers or flanges Co-molded or reinforced seals Form-in-place gaskets When any two flat, but rigid surfaces are brought together, slight surface irregularities on each surface prevent them from meeting completely at all points. These irregularities may be extremely minute, yet may provide a leakage path for gas or liquid under pressure, and for high frequency electromagnetic energy. This problem remains in flange sealing even when very high closure force is applied. However, when a gasket fabricated of resilient material is installed between the mating surfaces, and even minimal closure pressure is applied, the resilient gasket conforms to the irregularities in both mating surfaces. As a result, all surface imperfections and potential leak paths across the joint area are sealed completely against pneumatic and fluid pressure or penetration by environmental gases. If the gasket is conductive as well as resilient, with conductive matrix distributed throughout its total volume in mesh or particle form, the joint can be additionally sealed against penetration by, or exit of, electromagnetic energy. 79 www.lairdtech.com EMI ESSENTIALS ELECTROSEAL CONDUCTIVE ELASTOMER PRODUCT SELECTION GUIDE ECE POLYMER MATERIAL MATRIX Benefit Ag (Silver) AgCu AgNi AgAl AgGlass Ni NiAl Silicone good all purpose material NiGraphite Carbon Non-Conductive ECE082/083 ECE080/094 ECE084 ECE081 ECE085 ECE100 ECE032 ECE072/093 ECE087 NCE220 Fluorosilicone fuel and oil resistant -NA- ECE088 ECE090 ECE050/089 ECE011 -NA- -NA- ECE092 -NA- -NA- EPDM biohazard resistant -NA- -NA- -NA- ECE096 -NA- -NA- -NA- ECE095 ECE013 -NA- FIP RESIN MATRIX Benefit AgCu AgNi AgAl NiGraphite Non-Conductive RXP - room temperature cure simple dispense process SNK55 SNN60 SNL60 SNC70 SIL25 HXP - heat cure longer shelf life SNK60 SNN65 SNL70 SNC70 SIL35 80 www.lairdtech.com EMI ESSENTIALS ELECTROSEAL CONDUCTIVE ELASTOMER CASE STUDY EXAMPLE A Telecommunication customer A is looking for a gasket for RRU chassis. The chassis will be made of Aluminum by casting. There is an existing design including groove. Groove dimension is as follows. The customer is looking for an electromagnetic shielding larger than 50 dB for the chassis. And high reliability is required considering RRU unit will be exposed in open air and sustain various weather condition such as snow, rain, fog, etc. Select elastomer base Selection Process Conclusion Take reference of Table 1 Silicone All the three bases can meet resistance requirement against weather, but silicone is the most cost effective one. And also best on availability and processibility. Select filler system "Take reference of Table 3 for galvanic performance and Material Selection Table 6 1. Ag/Al filler would be most compatible with casting aluminum. 2. Ni/Graphite is a cost effective solution but still acceptable. Can be a candidate for future cost/performance comparison. 3. Better use a hybrid design considering high reliability requirement. 4. Both filler system can provide high shielding. But final performance would rely also on final design." "Hybrid (NCE+ECE), ECE81(Ag/Al) or ECE93(Ni/Graphite) " Closure force Medium closure force required because the RRU unit need to sustain water flush without high pressure Hollow cross section Is there an existing design? (part/groove/flange/interface) There is an existing groove design. But can not find corresponding groove recommendation in brochure. Would need a design on gasket. Contact Laird FAE for it. What's the shape? Existing groove design is rectangle shaped. A standard double D co-extrusion might work Decide dimension "Filling percentage >90% to bear water flush Compression >=25% considering large coplanarity of chassis and cover Final FEA possible to confirm the design Co-extrusion required because the total length is 1600 mm" How to mount the gasket? Would need a PSA to hold the strip in groove Design Shape & Dimension Double D co-extrusion or custom design But a friction fit design can also be done for easy assembly and cost saving. Example 81 www.lairdtech.com EMI ESSENTIALS ELECTROSEAL CONDUCTIVE ELASTOMER CASE STUDY TABLE 1 TABLE 4 Elastomer Type Low Temperature Upper Temperature EPDM -58°F (-50°C) 257°F (125°C) Silicone -49°F (-45°C) 392°F (200°C) Fluorosilicone -67°F (-55°C) 347°F (175°C) TABLE 2 Material Thickness Compression Force PSI (MPA) at Deflection of: 5% *10% 15% 20% 0.045 (1,1) 40 (0,3) 100 (0,7) 155 (1,1) 280 (1,9) 0.062 (1,6) 85 (0,6) 165 (1,1) 240 (1,7) 345 (2,4) 0.125 (3,2) 115 (0,8) 180 (1,2) 245 (1,7) 290 (2,0) TABLE 5 Fluid Silicone Fluorosilicone EPDM Cross Section Shape Deflection Impermeability to Gases Poor Fair Good Flat Strip 5-10 Percent Solid O 20-25 Percent Ozone and Ultraviolet Excellent Excellent Excellent Solid D 15-20 Percent ASTM 1 Oil Fair Good Don't Use Hollow O 20-50 Percent Hydraulic Fluids (Organic) Fair Good Don't Use Hollow D 25-50 Percent Hydraulic Fluids (Phosphate ester) Fair Fair Excellent Hollow P 25-50 Percent Interference Fit 15-25 Percent Hydrocarbon Fuels Don't Use Good Don't Use Dilute Acids Fair Good Good Concentrated Acids Don't Use Don't Use Fair / Good Dilute Bases Fair Good Excellent Concentrated Bases Don't Use Don't Use Good Esters / Ketones Don't Use Don't Use Excellent DS-2 (Decontaminating Fluid) Poor Poor Good STB (Decontaminating Fluid) Good Good Good Low Temperature Excellent Excellent Excellent High Temperature Excellent Good Good Compression Set Good Good Good Radiation Resistance Good Poor Good Little to no weight loss on metal coupon; less than 0.25%. Acceptable in all environments. Substantial amount of weight loss on metal coupon; between 0.50% and 1.25%. Not acceptable in corrosive environments; for less corrosive applications consult with Laird applications engineer. Moderate amount of weight loss on metal coupon; between 0.25% and 0.50%. May not be acceptable in very corrosive environments. Extreme amount of weight loss on metal coupon; greater than 1.25%. Not recommended in any environments. TABLE 3 Metal Substrate 80 Sil AG/CU 81 Sil AG/AL 84 Sil AG/NI 85 Sil AG/ Glass 89 FSil AG/AL 92 FSil NI/ Graphite 93 Sil NI/ Graphite 96 EPDM AG/AL • • • • • • • • Galvalume • • • • • • • • Tin Plated Steel • • • • • • • • Zinc Plated Steel • • • • • • • • Stainless Steel • • • • • • • • Chromated AI ® 82 www.lairdtech.com EMI ESSENTIALS ELECTROSEAL CONDUCTIVE ELASTOMER CASE STUDY MATERIAL SELECTION GUIDE Laird offers a series of products to meet a wide range of customer requirements for military and commercial applications. The classifications of the most common materials are based on cost and specific applications and are outlined in Table 5. TABLE 6 PARAMETER TEST METHOD Ni/graphite silver/ copper silver/Al silver silver silver/ nickel silver/glass carbon Elastomer silicone silicone silicone silicone silicone silicone silicone silicone EcE Name EcE72 EcE80 EcE81 EcE82 EcE83 EcE84 EcE85 EcE87 Filler Electrical Properties Volume Resistivity, Ω cm, max MIL-DTL-83528C para 4.5.10 0.100 0.004 0.008 0.002 0.010 0.005 0.006 5.0 Shielding Eff, 10 GHz, dB, min MIL-DTL-83528C para 4.5.12 100 120 100 120 80 100 100 30 Density, g/cm3 (±0.25) ASTM D792 2.30 3.40 2.00 3.50 1.80 4.00 1.90 1.30 Hardness, Shore A (±7) ASTM D2240 75 65 65 65 45 75 65 75 Tensile Strength, psi, min ASTM D412 280 200 200 300 150 200 200 700 Physical Properties Elongation Tear Strength, ppi, min Compression Set, max ASTM D412 150% ASTM D624, die C 55 100-300% 100-300% 100-300% 25 30 50 50-250% 20 100-300% 100-300% 100-300% 30 30 50 ASTM D395 30% 32% 32% 45% 35% 32% 30% 45% Max Oper. Temp., °C MIL-DTL-83528C para 4.5.15 160 125 160 160 160 125 160 160 Min. Oper. Temp., °C ASTM D1329 -55 -55 -55 -55 -55 -55 -55 -55 UL 94 V-0 After Heat Aging, Ω cm, max MIL-DTL-83528C para 4.5.15 - 0.010 0.010 0.010 0.015 0.010 0.015 7.0 After Break, Ω cm, max MIL-DTL-83528C para 4.5.9 - 0.008 0.015 0.010 0.020 0.010 0.009 7.0 During Vibration, Ω cm, max MIL-DTL-83528C para 4.5.13 - 0.006 0.012 0.010 0.015 0.010 0.009 N/A After Exposure to EMP, Ω cm, max MIL-DTL-83528C para 4.5.16 - 0.010 0.010 0.010 0.015 0.010 0.015 N/A ASTM D575 8 3.5 3.5 2.5 8.0 3.5 3.5 3.5 MIL-DTL-83528C para 4.5.17 - NS NS NS NS NS NS NS molded sheet / diecut parts X X X X X X X X molded shapes / O-rings X X X X X X X X Flame Retardance UL 94 HB (File No. E203 070 Electrical Stability Compression / Deflection, %, min Fluid Immersion1 Manufacturing Processes extruded profiles Color Mil-DTL-83528 Type X X X X X X X gray tan tan beige beige tan tan black – A B E J L M – 1 SUR indicates meets the immersion test requirements for 10 specified military/aerospace fluids 2 UL94 V-1 www.lairdtech.com 3 4 5 used only for low density low hardness UL94 HB corrosion resistant silver/Al filler 83 EMI ESSENTIALS ELECTROSEAL CONDUCTIVE ELASTOMER CASE STUDY TABLE 6 (cont.) PARAMETER Filler Ni/ graphite silver/ copper nickel N/A carbon Ni/ graphite silver/Al silver/ glass Elastomer silicone silicone silicone silicone EPDM EPDM EPDM EcE Name EcE93 EcE94 EcE100 NCE220 EcE13 EcE95 EcE96 EcE11 EcE50 EcE88 EcE89 EcE90 EcE92 0.100 0.005 0.200 Non 30 0.100 0.010 0.010 0.012 0.010 0.012 0.005 0.100 100 120 – Conductive 30 70 90 90 95 110 100 100 100 1.90 3.60 4.00 1.20 1.20 2.20 2.20 2.00 2.10 4.10 2.20 4.10 2.20 Hardness, Shore A (±7) 55 85 75 70 80 80 80 75 75 75 70 75 75 Tensile Strength, psi, min 150 400 450 405 2000 200 200 200 200 180 180 300 150 70-260% 60-200% 60-260% 100-300% 60-260% 100-300% 60-250% silver/Al silver/ copper silver/Al silver/ nickel Ni/ graphite fluorosilicone fluorosilicone fluorosilicone fluorosilicone fluorosilicone fluorosilicone Electrical Properties Volume Resistivity, Ω cm, max Shielding Eff, 10 GHz, dB, min Physical Properties Density, g/cm3 (±0.25) Elongation 100-300% 100-300% – 100-400% 100-400% 70-260% Tear Strength, ppi, min 30 40 50 – 100 60 60 30 35 30 30 50 40 Compression Set, max 30% 35% – – 30% 40% 50% 30% 30% 35% 30% 25% 30% Max Oper. Temp., °C 160 125 160 150 125 125 160 160 160 125 160 160 160 -55 -45 -55 -50 -40 -40 -40 -50 -55 -55 -55 -50 -55 Min. Oper. Temp., °C Flame Retardance UL 94 HB (File No. E203 070 UL 94 HB (File No. E203 070 UL 94 HB (File No. E203 070 Electrical Stability After Heat Aging, Ω cm, max 0.200 0.010 0.400 n/a 40 – – 0.015 0.015 0.015 0.015 0.010 0.200 After Break, Ω cm, max 0.200 0.010 – n/a – – – 0.015 0.015 0.015 0.015 0.010 0.200 During Vibration, Ω cm, max 0.200 0.010 – n/a – – – 0.015 0.015 0.015 0.015 0.010 0.200 After Exposure to EMP, Ω cm, max 0.100 0.015 – n/a – – – – 0.015 0.015 0.015 0.010 0.100 Compression / Deflection, %, min 8.0 2.5 – – 3.0 3.0 3.0 3.0 3.0 3.5 3.5 3.0 5.0 Fluid Immersion1 NS NS NS – NS NS NS SUR SUR SUR SUR SUR SUR molded sheet / diecut parts X X X X X X X X X X X X X molded shapes / O-rings X X X X X X X X X X X X X Manufacturing Processes extruded profiles Color Mil-DTL-83528 Type X X X X X X X X X X X X black tan dk gray blue black black tan tan tan tan blue tan dk gray – K – – – – – – – C D – – 84 www.lairdtech.com EMI ESSENTIALS VISUAL PART REFERENCE GUIDE ELECTROSEAL CONDUCTIVE ELASTOMERS Rectangular Strips Page 87 Hollow Rectangular Strips Page 87 Hollow D-Strips Page 88 O-StripTubing Page 89 D-Strips Page 90 Channel Strips Page 90 O-Strips Page 91 P-Strip Tubing Page 92 CO-EXTRUSION ELECTROSEAL CONDUCTIVE ELASTOMER FABRICATED COMPONENTS MIL CONNECTOR GASKETS “D” SUBMINIATURE CONNECTOR SHIELDS Page 93 Page 95 Page 101 Page 101 FORM-IN-PLACE EMI DISPENSED GASKETS METAL IMPREGNATED MATERIALS ELECTROCOAT Page 103 Page 99 Page 102 85 www.lairdtech.com EMI ESSENTIALS ELECTROSEAL CONDUCTIVE ELASTOMER MATERIAL SHEET MATERIAL The Table below lists thicknesses and sizes for our molded sheet material, while Table 3, page 82, shows the compounds available for all of our conductive silicone elastomers. HOW TO SPECIFY ECE Decide on molded sheet stock or extruded shapes. Select the desired configuration and dimensions from Table 1 (for sheet stock) or page 85 (for extruded shapes). Select the desired material from Table 3. Insert material number from Table 3, page 82, in place of the letters XX in the Laird part number. Example 1. From page 87, for a rectangular strip measuring 0.500 in. (12,7 mm) x 0.075 in. (1,9 mm), part number is 8861-0130-XX. 2. From Table 3, on page 82, for silver-nickel filler, material number is 84. ELECTROSEAL™ CONDUCTIVE ELASTOMER EMI SHIELDING Laird electrically conductive elastomer products are ideal for both military and commercial applications requiring both environmental sealing and EMI shielding. Compounds can be supplied in molded or extruded shapes, sheet stock, custom extruded, or die-cut shapes to meet a wide variety of applications. 3. Ordering part number is 8861-0130-84.* Note: Rectangular and D-shaped extrusions can be supplied with pressure sensitive adhesive tape. *If pressure sensitive adhesive is required, replace the fifth digit with a 9 (i.e. 8861-9130-84). Our conductive extrusions offer a wide choice of profiles to fit a large range of applications. The cross-sections shown on the following pages are offered as standard. Custom dies can be built to accommodate your specific design. • Available in a wide variety of conductive filler materials • Shielding effectiveness up to 120 dB at 10 GHz THICKNESS/TOLERANCE 0.020 ± 0.004 (0,5 ± 0,1) 10 X 10 SHEET 8860-0020-100-XX 10 X 15 SHEET 8860-0020-150-XX 15 X 20 SHEET 8860-0020-300-XX 18 X 18 SHEET N/A 0.032 ± 0.005 (0,8 ± 0,1) 8860-0032-100-XX 8860-0032-150-XX 8860-0032-300-XX 8860-0032-324-XX 0.045 ± 0.005 (1,1 ± 0,1) 8860-0045-100-XX 8860-0045-150-XX 8860-0045-300-XX 8860-0045-324-XX 0.062 ± 0.007 (1,5 ± 0,2) 8860-0062-100-XX 8860-0062-150-XX 8860-0062-300-XX 8860-0062-324-XX 0.093 ± 0.010 (2,3 ± 0,3) 8860-0093-100-XX 8860-0093-150-XX 8860-0093-300-XX 8860-0093-324-XX 0.100 ± 0.010 (2,5 ± 0,3) 8860-0100-100-XX 8860-0100-150-XX 8860-0100-300-XX 8860-0100-324-XX 0.125 ± 0.010 (3,2 ± 0,3) 8860-0125-100-XX 8860-0125-150-XX 8860-0125-300-XX 8860-0125-324-XX 86 www.lairdtech.com EMI ESSENTIALS EXTRUSIONS GUIDE Rectangular Strips Hollow Rectangular Strips TOLERANCES ALL PROFILES DIMENSIONS TOLERANCE Under 0.101 (2,6) 0.101 to 0.200 (2,6 to 5,1) 0.201 to 0.300 (5,1 to 7,6) 0.301 to 0.500 (7,6 to 12,7) Over 0.500 (12,7) ± 0.005 (0,15) ± 0.008 (0,2) ± 0.010 (0,3) ± 0.015 (0,4) ± 0.020 (0,5) MIL-DTL-85328 PART NUMBER M83528/009X001 M83528/009X002 M83528/009X003 M83528/009X004 M83528/009X005 M83528/002X006 M83528/009X007 M83528/009X008 M83528/009X009 M83528/009X010 M83528/009X011 M83528/009X012 M83528/009X013 PART NUMBER 8861-0100 8861-0179 8861-0181 8861-0105 8861-0110 8861-0115 8861-0120 8861-0121 8861-0167 8861-0193 8861-0125 8861-0173 8861-0174 8861-0136 8861-0175 8861-0183 8861-0172 8861-0131 8861-0182 8861-0130 8861-0188 8861-0135 8861-0140 8861-0142 8861-0141 8861-0145 8861-0184 8861-0189 8861-0150 8861-0103 8861-0169 8861-0192 8861-0155 8861-0160 PART NUMBER 8862-0112 8862-0113 8862-0114 8862-0100 8862-0105 NOMINAL DIMENSIONS A B C 0.125 (3,2) 0.200 (5,1) 0.250 (6,4) 0.330 (8,4) 0.375 (9,5) 0.125 (3,2) 0.130 (3,3) 0.250 (6,4) 0.305 (7,7) 0.375 (9,5) 0.078 (2,0) 0.090 (2,3) 0.156 (4,0) 0.125 (3,2) 0.188 (4,8) NOMINAL DIMENSIONS A B 0.063 (1,6) 0.079 (2,0) 0.079 (2,0) 0.095 (2,4) 0.120 (3,0) 0.125 (3,2) 0.156 (4,0) 0.187 (4,8) 0.188 (4,8) 0.189 (4,8) 0.250 (6,4) 0.250 (6,4) 0.250 (6,4) 0.250 (6,4) 0.252 (6,4) 0.378 (9,6) 0.500 (12,7) 0.500 (12,7) 0.500 (12,7) 0.500 (12,7) 0.500 (12,7) 0.500 (12,7) 0.500 (12,7) 0.750 (19,1) 0.750 (19,1) 0.750 (19,1) 0.827 (21,0) 0.827 (21,0) 0.880 (22,4) 0.984 (25,0) 1.00 (25,4) 1.00 (25,4) 1.00 (25,4) 1.18 (30,0) 0.042 (1,1) 0.039 (1,0) 0.059 (1,5) 0.062 (1,6) 0.075 (1,9) 0.062 (1,6) 0.062 (1,6) 0.125 (3,2) 0.062 (1,6) 0.189 (4,8) 0.062 (1,6) 0.125 (3,2) 0.188 (4,8) 0.200 (5,1) 0.031 (0,8) 0.063 (1,6) 0.020 (0,5) 0.042 (1,1) 0.059 (1,5) 0.075 (1,9) 0.094 (2,4) 0.125 (3,2) 0.188 (4,8) 0.040 (1,0) 0.042 (1,1) 0.062 (1,6) 0.071 (1,8) 0.094 (2,4) 0.062 (1,6) 0.043 (1,1) 0.062 (1,6) 0.126 (3,2) 0.250 (6,4) 0.062 (1,6) 87 www.lairdtech.com EMI ESSENTIALS EXTRUSIONS GUIDE Hollow D-Strips TOLERANCES ALL PROFILES DIMENSIONS TOLERANCE Under 0.101 (2,6) 0.101 to 0.200 (2,6 to 5,1) 0.201 to 0.300 (5,1 to 7,6) 0.301 to 0.500 (7,6 to 12,7) Over 0.500 (12,7) ± 0.005 (0,15) ± 0.008 (0,2) ± 0.010 (0,3) ± 0.015 (0,4) ± 0.020 (0,5) MIL-DTL-83528 PART NUMBER M83528/007X001 M83528/007X002 M83528/007X007 M83528/007X005 M83528/007X004 M83528/007X006 DIMENSIONS PART NUMBER 8866-0135 8866-0160 8866-0130 8866-0162 8866-0100 8866-0111 8866-0103 8866-0136 8866-0105 8866-0131 8866-0050 8866-0110 8866-0120 8866-0116 8866-0127 8866-0168 8866-0166 8866-0134 8866-0137 8866-0169 8866-0126 8866-0125 8866-0148 8866-0139 8866-0129 8866-0155 A B RAD C VIEW 0.093 (2,4) 0.098 (2,5) 0.100 (2,5) 0.109 (2,8) 0.156 (4,0) 0.156 (4,0) 0.158 (4,0) 0.160 (4,1) 0.187 (4,8) 0.250 (6,4) 0.250 (6,4) 0.250 (6,4) 0.312 (7,9) 0.312 (7,9) 0.325 (8,3) 0.358 (9,1) 0.374 (9,5) 0.375 (9,5) 0.375 (9,5) 0.421 (10,7) 0.480 (12,2) 0.487 (12,4) 0.488 (12,4) 0.488 (12,4) 0.500 (12,7) 0.625 (15,9) 0.093 (2,4) 0.098 (2,5) 0.094 (2,4) 0.125 (3,2) 0.156 (4,0) 0.156 (4,0) 0.240 (6,1) 0.120 (3,0) 0.187 (4,8) 0.145 (3,7) 0.250 (6,4) 0.250 (6,4) 0.312 (7,9) 0.312 (7,9) 0.575 (14,6) 0.374 (9,5) 0.252 (6,4) 0.250 (6,4) 0.250 (6,4) 0.427 (10,8) 0.335 (8,5) 0.324 (8,2) 0.312 (7,9) 0.324 (8,2) 0.312 (7,9) 0.400 (10,2) 0.046 (1,2) 0.049 (1,2) 0.050 (1,3) 0.054 (1,4) 0.078 (2,0) 0.078 (2,0) 0.079 (2,0) 0.080 (2,0) 0.093 (2,4) 0.125 (3,2) 0.125 (3,2) 0.125 (3,2) 0.112 (2,8) 0.156 (4,0) 0.287 (7,3) 0.179 (4,5) 0.187 (4,8) 0.090 (2,3) 0.187 (4,8) 0.210 (5,3) 0.240 (6,1) 0.244 (6,2) 0.244 (6,2) 0.244 (6,2) 0.250 (6,4) 0.312 (7,9) 0.027 (0,7) 0.020 (0,5) 0.025 (0,6) 0.024 (0,6) 0.045 (1,1) 0.027 (0,7) 0.040 (1,0) 0.025 (0,6) 0.050 (1,3) 0.030 (0,8) 0.050 (1,3) 0.065 (1,7) 0.062 (1,6) 0.062 (1,6) 0.080 (2,0) 0.039 (1,0) 0.039 (1,0) 0.050 (1,3) 0.032 (0,8) 0.039 (1,0) 0.035 (0,9) 0.062 (1,6) 0.055 (1,4) 0.063 (1,6) 0.050 (1,3) 0.057 (1,4) A A A A A A A A A A B A A B A A A B A A A A A A A A 88 www.lairdtech.com EMI ESSENTIALS EXTRUSIONS GUIDE O-Strip Tubing TOLERANCES ALL PROFILES DIMENSIONS TOLERANCE Under 0.101 (2,6) 0.101 to 0.200 (2,6 to 5,1) 0.201 to 0.300 (5,1 to 7,6) 0.301 to 0.500 (7,6 to 12,7) Over 0.500 (12,7) ± 0.005 (0,15) ± 0.008 (0,2) ± 0.010 (0,3) ± 0.015 (0,4) ± 0.020 (0,5) MIL-DTL-85328 PART NUMBER M83528/011X007 M83528/011X001 M83528/011X006 M83528/011X002 PART NUMBER 8864-0136 8864-0060 8864-0173 8864-0156 8864-0161 8864-0090 8864-0095 8864-0142 8864-0172 8864-0153 8864-0100 8864-0101 8864-0102 8864-0104 8864-0171 8864-0105 8864-0163 8864-0139 8864-0162 NOMINAL DIMENSIONS A B 0.085 (2,2) 0.085 (2,2) 0.085 (2,2) 0.090 (2,3) 0.090 (2,3) 0.090 (2,3) 0.103 (2,6) 0.103 (2,6) 0.110 (2,8) 0.115 (2,9) 0.125 (3,2) 0.125 (3,2) 0.130 (3,3) 0.145 (3,7) 0.149 (3,8) 0.156 (4,0) 0.156 (4,0) 0.168 (4,3) 0.177 (4,5) 0.035 (0,9) 0.040 (1,0) 0.050 (1,3) 0.040 (1,0) 0.045 (1,1) 0.050 (1,3) 0.040 (1,0) 0.050 (1,3) 0.062 (1,6) 0.062 (1,6) 0.045 (1,1) 0.062 (1,6) 0.062 (1,6) 0.070 (1,8) 0.125 (3,2) 0.050 (1,3) 0.062 (1,6) 0.069 (1,8) 0.092 (2,3) MIL-DTL-85328 PART NUMBER M83528/011X008 M83528/011X003 M83528/011X004 M83528/011X005 PART NUMBER 8864-0143 8864-0168 8864-0147 8864-0167 8864-0110 8864-0160 8864-0120 8864-0144 8864-0050 8864-0125 8864-0127 8864-0170 8864-0166 8864-0135 8864-0055 8864-0159 8864-0053 8864-010462 8864-3714 8864-0103 8864-0091 8864-3515 8864-2618 8864-3824 8864-0137 8864-0141 8864-0231 8864-0180 8864-3715 NOMINAL DIMENSIONS A B 0.177 (4,5) 0.188 (4,8) 0.216 (5,5) 0.228 (5,8) 0.250 (6,4) 0.312 (7,9) 0.312 (7,9) 0.330 (8,4) 0.375 (9,5) 0.375 (9,5) 0.400 (10,2) 0.422 (10,7) 0.490 (12,4) 0.513 (13,0) 0.550 (14,0) 0.623 (15,8) 0.630 (16,0) 0.079 (2,0) 0.120 (3,0) 0.125 (3,2) 0.169 (4,3) 0.125 (3,2) 0.188 (4,8) 0.192 (4,9) 0.250 (6,4) 0.235 (6,0) 0.250 (6,4) 0.200 (5,1) 0.319 (8,1) 0.414 (10,5) 0.438 (11,1) 0.447 (11,4) 0.366 (9,3) 0.375 (9,5) 0.146 (3.7) 0.146 (3.7) 0.138 (3.5) 0.094 (2.4) 0.138 (3.5) 0.102 (2.6) 0.150 (3.8) 0.094 (2.4) 0.126 (3.2) 0.071 (1.8) 0.063 (1.6) 0.146 (3.7) 0.091 (2.3) 0.055 (1.4) 0.071 (1.8) 0.059 (1.5) 0.059 (1.5) 0.071 (1.8) 0.094 (2.4) 0.035 (0.9) 0.087 (2.2) 0.039 (1) 0.039 (1) 0.059 (1.5) 89 www.lairdtech.com EMI ESSENTIALS EXTRUSIONS GUIDE D-Strips MIL-DTL-83528 PART NUMBER MB83528/003X001 MB83528/003X005 MB83528/003X010 MB83528/003X004 MB83528/003X002 MB83528/003X008 MB83528/003X007 MB83528/003X006 MB83528/003X003 MB83528/003X011 MB83528/003X012 RECOMMENDED GROOVE DIMENSIONS (±0.002) DIMENSIONS PART NUMBER 8865-0100 8865-0105 8865-0120 8865-0140 8865-0116 8865-0110 8865-0135 8865-0130 8865-0125 8865-0115 8865-0144 8865-0145 A B RAD WIDTH DEPTH 0.055 (1,4) 0.062 (1,6) 0.062 (1,6) 0.075 (1,9) 0.093 (2,4) 0.094 (2,4) 0.118 (3,0) 0.122 (3,1) 0.150 (3,8) 0.178 (4,5) 0.188 (4,8) 0.250 (6,4) 0.064 (1,6) 0.068 (1,7) 0.100 (2,5) 0.178 (4,5) 0.093 (2,4) 0.078 (2,0) 0.156 (4,0) 0.135 (3,4) 0.110 (2,8) 0.089 (2,3) 0.188 (4,8) 0.250 (6,4) 0.031 (0,8) 0.031 (0,8) 0.031 (0,8) 0.089 (2,3) 0.047 (1,2) 0.047 (1,2) 0.059 (1,5) 0.061 (1,5) 0.075 (1,9) 0.039 (1,0) 0.094 (2,4) 0.125 (3,2) 0.067 (1,7) 0.074 (1,9) 0.076 (1,9) 0.093 (2,4) 0.109 (2,8) 0.109 (2,8) 0.140 (3,6) 0.141 (3,6) 0.165 (4,2) 0.182 (4,3) 0.220 (5,6) 0.286 (7,3) 0.053 (1,3) 0.057 (1,4) 0.084 (2,1) 0.150 (3,8) 0.077 (2,0) 0.065 (1,7) 0.131 (3,3) 0.113 (2,9) 0.092 (2,3) 0.074 (1,9) 0.160 (4,1) 0.212 (5,4) Channel Strips TOLERANCES ALL PROFILES MIL-DTL-83528 PART NUMBER M83528/010X001 M83528/010X002 M83528/010X003 M83528/010X004 M83528/010X005 M83528/010X006 TOLERANCE ± 0.005 (0,15) ± 0.008 (0,2) ± 0.010 (0,3) ± 0.015 (0,4) ± 0.020 (0,5) DIMENSIONS PART NUMBER 8868-0100 8868-0055 8868-0105 8868-0056 8868-0115 8868-0067 8868-0120 8868-0081 8868-0084 8868-0085 8868-0125 8868-0070 8868-0075 DIMENSIONS Under 0.101 (2,6) 0.101 to 0.200 (2,6 to 5,1) 0.201 to 0.300 (5,1 to 7,6) 0.301 to 0.500 (7,6 to 12,7) Over 0.500 (12,7) A B C D 0.100 (2,5) 0.114 (2,9) 0.126 (3,2) 0.156 (4,0) 0.156 (4,0) 0.175 (4,4) 0.175 (4,4) 0.189 (4,8) 0.250 (6,4) 0.252 (6,4) 0.327 (8,3) 0.395 (1,0) 0.530 (13,5) 0.100 (2,5) 0.082 (2,1) 0.110 (2,8) 0.114 (2,9) 0.156 (4,0) 0.500 (12,7) 0.156 (4,0) 0.189 (4,8) 0.250 (6,4) 0.252 (6,4) 0.235 (6,0) 0.120 (3,0) 0.130 (3,3) 0.034 (0,9) 0.030 (0,8) 0.025 (0,6) 0.030 (0,8) 0.062 (1,6) 0.047 (1,2) 0.047 (1,2) 0.063 (1,6) 0.062 (1,6) 0.126 (3,2) 0.062 (1,6) 0.275 (7,0) 0.390 (9,9) 0.033 (0,8) 0.026 (0,7) 0.050 (1,3) 0.062 (1,6) 0.047 (1,2) 0.075 (1,9) 0.075 (1,9) 0.063 (1,6) 0.062 (1,6) 0.063 (1,6) 0.115 (2,9) 0.060 (1,5) 0.060 (1,5) 90 www.lairdtech.com EMI ESSENTIALS EXTRUSIONS GUIDE O-Strips MIL-DTL-85328 PART NUMBER M83528/001X001 M83528/001X002 M83528/001X003 M83528/001X004 M83528/001X005 M83528/001X006 M83528/001X007 M83528/001X008 M83528/001X009 M83528/001X010 M83528/001X011 M83528/001X0012 M83528/001X013 PART NUMBER 8863-0184 8863-0100 8863-0105 8863-0110 8863-0115 8863-0120 8863-0125 8863-0196 8863-0130 8863-0135 8863-0140 8863-0145 8863-0150 8863-0160 8863-0165 8863-0170 8863-0197 8863-0183 8863-0198 8863-0199 8863-0175 8863-0180 8863-0200 8863-0201 8863-0202 RECOMMENDED GROOVE DIMENSIONS (±0.002) A WIDTH HEIGHT 0.032 (0,8) 0.040 (1,0) 0.053 (1,3) 0.062 (1,6) 0.070 (1,8) 0.080 (2,0) 0.093 (2,4) 0.098 (2,5) 0.103 (2,6) 0.112 (2,8) 0.119 (3,0) 0.125 (3,2) 0.130 (3,3) 0.139 (3,5) 0.150 (3,8) 0.160 (4,1) 0.186 (4,7) 0.188 (4,8) 0.194 (4,9) 0.197 (5,0) 0.216 (5,5) 0.250 (6,4) 0.256 (6,5) 0.312 (7,9) 0.374 (9,5) 0.036 (0,9) 0.045 (1,1) 0.059 (1,5) 0.066 (1,7) 0.076 (1,9) 0.086 (2,2) 0.100 (2,5) 0.105 (2,7) 0.110 (2,8) 0.119 (3,0) 0.126 (3,2) 0.133 (3,4) 0.137 (3,5) 0.147 (3,7) 0.158 (4,0) 0.168 (4,3) 0.197 (5,0) 0.200 (5,1) 0.209 (5,3) 0.210 (5,3) 0.229 (5,8) 0.267 (6,8) 0.274 (7,0) 0.337 (8,6) 0.400 (10,2) 0.026 (0,7) 0.032 (0,8) 0.042 (1,1) 0.050 (1,3) 0.056 (1,4) 0.064 (1,6) 0.074 (1,9) 0.078 (2,0) 0.082 (2,1) 0.089 (2,3) 0.095 (2,4) 0.100 (2,5) 0.104 (2,6) 0.111 (2,8) 0.120 (3,0) 0.128 (3,3) 0.149 (3,8) 0.150 (3,8) 0.156 (4,0) 0.158 (4,0) 0.173 (4,4) 0.200 (5,1) 0.205 (5,2) 0.250 (6,4) 0.300 (7,6) 91 www.lairdtech.com EMI ESSENTIALS EXTRUSIONS GUIDE P-Strips TOLERANCES ALL PROFILES DIMENSIONS TOLERANCE Under 0.101 (2,6) 0.101 to 0.200 (2,6 to 5,1) 0.201 to 0.300 (5,1 to 7,6) 0.301 to 0.500 (7,6 to 12,7) Over 0.500 (12,7) ± 0.005 (0,15) ± 0.008 (0,2) ± 0.010 (0,3) ± 0.015 (0,4) ± 0.020 (0,5) MIL-DTL-83528 PART NUMBER M83528/008X007 M83528/008X002 M83528/008X004 M83528/008X006 M83528/008X001 M83528/008X005 PART NUMBER 8867-0136 8867-0147 8867-0144 8867-0128 8867-0141 8867-0101 8867-0127 8867-0105 8867-0126 8867-0102 8867-0158 8867-0165 8867-0130 8867-0100 8867-0166 8867-0125 DIMENSIONS A B C D 0.275 (7,0) 0.290 (7,4) 0.390 (9,9) 0.415 (10,5) 0.425 (10,8) 0.475 (12,1) 0.500 (12,7) 0.500 (12,7) 0.600 (15,2) 0.640 (16,3) 0.752 (19,1) 0.752 (19,1) 0.780 (19,8) 0.850 (21,6) 0.874 (22,2) 0.875 (22,2) 0.140 (3,6) 0.095 (2,4) 0.200 (5,1) 0.200 (5,1) 0.250 (6,4) 0.200 (5,1) 0.200 (5,1) 0.250 (6,4) 0.250 (6,4) 0.208 (5,3) 0.252 (6,4) 0.437 (11,1) 0.360 (9,1) 0.200 (5,1) 0.500 (12,7) 0.312 (7,9) 0.085 (2,2) 0.062 (1,6) 0.103 (2,6) 0.060 (1,5) 0.151 (3,8) 0.080 (2,0) 0.076 (1,9) 0.125 (3,2) 0.125 (3,2) 0.080 (2,0) 0.189 (4,8) 0.347 (8,8) 0.255 (6,5) 0.080 (2,0) 0.400 (10,2) 0.187 (4,8) 0.030 (0,8) 0.025 (0,6) 0.062 (1,6) 0.062 (1,6) 0.050 (1,3) 0.062 (1,6) 0.062 (1,6) 0.062 (1,6) 0.062 (1,6) 0.072 (1,8) 0.063 (1,6) 0.060 (1,5) 0.070 (1,8) 0.062 (1,6) 0.065 (1,7) 0.062 (1,6) 92 www.lairdtech.com EMI ESSENTIALS GEMINI ™ COEXTRUSIONS MULTI-EXTRUSION, BI-FUNCTIONAL ELASTOMER GASKET FEATURES Laird Gemini™ product line is a high-performance gasket solution that combines a reliable environmental silicone elastomer seal with an electrically conductive elastomer. Conductive particle filler results in a product with lower material cost and an improved environmental seal against water, moisture, dust and mildly corrosive atmospheric conditions due to smog. • Combines the strength of silicone rubber with Laird proprietary conductive elastomer EMI shielding materials and knowledge • Improved environmental seal • Improved EMI performance over lifetime • Cost-effective • Available in both standard and custom profiles • Ability to use finite element analysis to design the best custom gasket for your application Our conductive extrusions offer a wide choice of profiles to fit a large range of applications. The cross-sections shown on the following pages are offered as standard. Custom dies can be built to accommodate your specific design. MARKETS • Wireless infrastructure • Remote radio units • Telecom cabinets • Radar • IT cabinets • All electronic cabinets or electronic chassis that require both an environmental seal and EMI shielding NAME OF MATERIAL NONCONDUCTIVE ELASTOMER TEST METHOD CONDUCTIVE ELASTOMER TYPICAL CO-GASKET DESIGN NCE220 NCE221 ECE93 ECE81A Silicone rubber Silicone rubber NA Alumina/Ni/C Ag/Al Compound ASTM D792 HB Blue 70 Shore A 1.2 V1(Pending) Orange 60 Shore A 1.5 Silicone rubber Ag/Al Compound Not tested Tan 65 Shore A 1.9 Silicone rubber Alumina Silicone rubber Nickel/graphite (Ni/C) HB Black 55 Shore A 1.9 NCE221/ ECE81A, CO-ECE Silicone rubber Tensile strength ASTM D412 (modified) 2.8 MPa 3.4 MPa 1.0 MPa 1.7 MPa NA NA Tear strength GB/T529-91 (modified) 60 ppi, min 30 ppi, min 30 ppi, min NA NA Elongation to break Working temperature range ASTM D412 100 to 400% 300% ,min 100 to 300% 100 to 300% 100 to 300% 300% ,min ASTMJ D1329 -50 to 150°C -50 to 150°C -50 to 150°C -50 to 150°C -50 to 150°C -50 to 150°C EU directive 94/62/EC, Dec 20, 1994 RoHS Compliant RoHS Compliant RoHS Compliant RoHS Compliant RoHS Compliant RoHS Compliant Volume resistivity (max value) MIL-DTL-83528C (PARA 4.5.10) Insulator Insulator 0.100 ohm-cm 0.006 ohm-cm NA NA Aging volume resistivity (max value) Laird aging test MIL-DTL-83528C (PARA 4.5.10) Insulator Insulator 90 >100 >100 NA >90 >90 >90 >100 NA Hardness ASTM D2240 Shore A 70 55 60 60 25 70 60 70 65 35 Density (cured) ASTM D792 g/cm3 2.5 3 2.1 3.9 1.2 2.5 3.1 2 3.84 1.1 Mechanical Properties Compression set ASTM D395 % 15 10 10 15 10 GHz Q Zorb™ - 2000 .020” (0.5 mm) >8 GHz Q Zorb™ - 2000 .040” (1.0 mm) >4 GHz Q Zorb™ - 2000 .060” (1.5 mm) Q-Zorb is thinner and more robust for surface currents. Thicker is better for low frequency. 4 GHz 2242 Q Zorb™ - RFSW .125” (3.1 mm) < 4 GHz 3535 CA-19 .006” (0.15 mm) < 2 GHz 3536 CA-19 .020” (0.5 mm) 5206 RF Foam - RFLS .125” (3.1 mm) 5092 RF Foam - RFLS .250” (6.25 mm) 4106 RF Foam - RFRET .50” (12.5 mm) < 2 GHz Insertion Loss Broadband Insertion Loss Broadband Insertion Loss Broadband EMI ESSENTIALS Q-ZORB ® 2000 HF (HIGH FREQUENCY) SURFACE WAVE ABSORBERS Q-Zorb® 2000 HF surface wave absorbers are thin, magnetically loaded elastomeric sheets designed to provide attenuation at high angles of incidence for surface wave attenuation. They are nominally manufactured in the thickness range of 0.015" to 0.125" (0,4 mm to 3,2 mm). Q-Zorb® 2000 is silicone-based, meets the UL V0 fire retardant requirement and is RoHS compliant. Laird can provide the material die-cut and with a pressuresensitive adhesive for ease of installations. Sheets are offered in nominal sizes of 24" x 24" (609,6 mm x 609,6 mm), although custom sizes and molded components are available. APPLICATIONS FIGURE 1. FIGURE 3. The material can be used inside of microwave housings to reduce internal resonance and to lower the "Q" of the microwave cavity. They are also effective in isolating antennas from ground plane reflections. Q-Zorb® can be used with board-level shielding and other types of EMI shielding to enhance the shielding effectiveness at frequencies from 2-40 GHz. Q-Zorb .020 in (0.5 mm) Thick P/N 2388 2 4 -1 8 10 12 14 16 18 16 18 -5 Reflection Loss (dB) Loss (dB) -3 -5 -7 -9 -11 -10 -15 -20 -25 -30 -13 -15 2 4 6 8 10 12 14 16 -35 18 Frequency (GHz) FIGURE 2. Frequency (GHz) Frequency (GHz) FIGURE 4. Q-Zorb Surface Wave 0.060" (1.5 mm) Thick Q-Zorb Wave 0.060 in (1.5 mm) Thick P/N 2240 2240 P/N 2 4 6 8 10 12 14 16 Q-Zorb .125 in (3.2 mm) Thick P/N 2242 18 0 0 -5 -5 Reflection Loss (dB) Reflection Loss (dB) Loss (dB) 6 0 1 Reflection Loss (dB) Q-Zorb Surface Wave (1.0 mm) Thick Q-Zorb 0.040 in 0.040" (1.0 mm) Thick P/N 2238 P/N 2238 -10 -15 -20 -25 -10 -15 -20 -25 -30 -30 -35 -35 2 Frequency (GHz) Frequency (GHz) 4 6 8 10 12 Frequency (GHz) SIZE THICKNESS WEIGHT TEMPERATURE MAXIMUM ELECTRICAL PERFORMANCE COLOR 2388 2388 -.25 24” x 24” 12” x 12” .50 lb/sq ft 300 °F 12-18 GHz Gray 2388 - S 4” x 6” 0.20” nominal (.5 mm) 2238 2238 -.25 2238 - S 2240 2240 -.25 2240 - S 2242 2242 -.25 2242 - S 24” x 24” 12” x 12” 4” x 6” 24” x 24” 12” x 12” 4” x 6” 24” x 24” 12” x 12” 4” x 6” .040” nominal (1 mm) .94 lb/sq ft 300 °F 8-18 GHz Gray 0.60” nominal (1.5 mm) 1.2 lb/sq ft 300 °F 4-18 GHz Excellent for surface current attenuation .125” nominal (3.2 mm) 2.75 lb/ sq ft 300 °F 1-18 GHz Excellent for surface current attenuation PART NO. All dimensions shown are in inches (millimeters) unless otherwise specified. www.lairdtech.com 14 BONDING FIRE RETARDANT RATING RoHS Compliant Sulfur-free Supplied with 3M 9485 PSA UL V0 Good general weather and chemical resistance Sulfur-free Supplied with 3M 9485 PSA UL V0 Gray Good general weather Supplied with and chemical resistance 3M 9485 PSA Sulfur-free UL V0 Gray Good general weather Supplied with and chemical resistance 3M 9485 PSA Sulfur-free UL V0 109 EMI ESSENTIALS Q-ZORB ® 3000 HP (HIGH PERMEABILITY) ABSORBERS CA-19 Q-Zorb 3000 HP product line utilizes special shaped magnetic fillers in a polymeric binder to produce thin sheets with excellent low frequency performance. The product has very high permeabilities along with low frequency magnetic loss. This allows relatively thin sheets of material to perform at frequencies below 2 GHz. CA 19 comes in thickness ranges of .006” .15 mm to .020” .5 mm. and is very flexible. The product is available in rolls 13” wide and any length available. It can be die cut into specific shapes and is supplied with a pressure sensitive adhesive backing for ease of use. APPLICATIONS Q-Zorb 3000 is used in situations where low frequency (< 2 GHz) noise problems are occurring. Some applications include: • Die cut components placed in microwave cavities • Place on top of noisy chip to reduce emissions • Wrapped around cables to reduce conducted emissions • Used inside of board level shields to improve shielding performance Two standard part numbers of Q-Zorb 3000 are available in the absorber sample kit. This allows the engineer to see if this product will help solve any specific EMI problem. Reflective Loss TYPICAL PHYSICAL PROPERTIES Thickness 0 -0.5 R Loss (dB) 3535 0.15 mm -1.0 Size -1.5 0.50 mm -2.0 3536 3536-S -2.5 -3.0 Permeability μ’ (1 MHz) -3.5 Electrical resistivity (Ω /□) -4.0 -4.5 -5.0 0.05 3535-S 0.35 0.64 0.94 1.23 1.53 1.82 2.12 Frequency (GHz) 2.41 2.71 3.00 .020” x 4”x 6” 37 6 x 1010 3.1 Tensile strength (MPa) 1.9 Hardness (Durometer A) Flammability www.lairdtech.com .006” x 4” x 6” .020” x 12” x 13” Specific gravity Thermal conductivity (W / mk) 110 .006” x 12” x 13” 70 ± 10% 1.0 UL94 V-0 EMI ESSENTIALS RFRET 4000 RETICULATED FOAM ABSORBERS RFRET 4000 is a reticulated foam absorber. Reticulated foam is an urethane-based foam with a well-defined open-cell structure. The cell size can be chosen to optimize penetration of the conductive coating to which it is adhered. Laird uses two separate processes to produce its reticulated foam absorber. This unique spray process applies a coating that is graded through the thickness of the foam. The grading of the coating also produces an electrical grading that results in a material with excellent broadband reflectivity reduction. APPLICATIONS RFRET broadband foam is commonly used around antennas to provide isolation or side lobe reduction. It can be die-cut into components for EMI reduction inside microwave cavities and is used to manufacture antenna hats and test boxes. It can be encapsulated into a textile cover for use outdoors and fabricated into blankets, covers and other components. Recently, it has been used for a combination air/EMI filter in networking equipment. The product can be made UL 94 HF1 for such applications. Q-Zorb Typical reflectivity performance P/N 4106 TYPICAL PHYSICAL PROPERTIES 0 Reflection Loss (dB) -5 Size -10 -15 Thickness -20 Weight -2 4106 24” x 24” 4106 -.25 12” x 12” 4106 - S 4” x 6” Temperature Maximum -30 Color -35 2 4 6 8 10 12 Frequency (GHz) 14 16 18 Environmental 0.50” nominal .092 lb/sq ft 250 °F Gray Withstands intermittent exposure to water without degradation 111 www.lairdtech.com EMI ESSENTIALS RFLS 5000 SINGLE LAYER "LOSSY" FOAM ABSORBERS APPLICATIONS RFLS 5000 is a series of single layer "lossy" sheets produced by dipping lightweight open-celled urethane foam into a resistive solution. The end product is a uniform, lightweight, loaded sheet material with a specified insertion loss at a given frequency. RFLS offers the lowest cost in microwave absorber products. Thickness of the sheets range from 0.125" to 1.5" (3,2 mm to 38,1 mm) and are generally 24" x 24" (609,6 mm x 609,6 mm). Custom sizes and components can be fabricated. The insertion loss of the product is measured in an insertion tunnel over the 2 to 18 GHz frequency range. Specifications are generally given at 3 or 10 GHz. The material can be die-cut into components and supplied with a pressure-sensitive adhesive for ease of application. Typical insertion loss performance Insertion Loss (dB) 0 PART NO. 5092 .125 Thickness RFLS sheets are used to lower noise or cavity Q's in microwave components such as amplifiers, oscillators, computer housings and wireless equipment. SIZE -10 5092 -.25 12” x 12” -20 5092 - S 4” x 6” .250 Thickness THICKNESS TEMPERATURE RANGE COLOR ENVIRONMENTAL BONDING 24” x 24” -30 5206 24” x 24” -40 5206 -.25 12” x 12” -50 5206 - S 4” x 6” 0.25” nominal -85 – 250° F Black RoHS Compliant Supplied with 3M 9485 PSA 0.125” nominal -85 – 250° F Black RoHS Compliant Supplied with 3M 9485 PSA -60 -70 2 4 6 8 10 12 14 16 18 Frequency (GHz) NOTES 112 The physical properties and electrical performance property above are typical for the material, but not intended for use in specifications or for the acceptance inspection criteria because of variations in testing methods, conditions and configurations. www.lairdtech.com EMI ESSENTIALS ANALYSIS, TEST AND PROTOTYPE DEVELOPMENT ABSORBER BOARD-LEVEL SHIELDING (ABLS) FIGURE 1. Increasing use of printed circuit boards in complex electronics requires unique shielding solutions. Laird has developed a near field measurement to accurately determine the effectiveness of board-level shielding. Several Laird board-level shields have been characterized using this technique. Laird has further enhanced performance at greater than 2 GHz by adding a microwave absorber to the board-level shield. Further work has been completed on FlomericsTM FLO-EMC to analytically investigate board-level shields performance improvement using absorbers at high frequency. THERMALLY CONDUCTIVE ABSORBERS – COOL-ZORB VBROP can optimize absorber performance at various frequencies and angles of incidence. Laird is developing thermally conductive microwave absorbing materials. These can be used as thermal pads between chips and heatsinks, allowing conduction of heat and dissipation of EMI. Initial testing and modeling has shown this to be an effective solution to heat sink radiation from noisy chips. MU EPSILON MEASUREMENT CAPABILITIES Laird has a network analyzer to make amplitude and phase measurements from 130 MHz to 20 GHz. Laird also has a reflectivity arch, transmission tunnel and a variety of coaxial, wave-guide and other test equipment to determine intrinsic electrical properties of absorber materials. This ability has enabled Laird to build a database that customers can use to design new absorbers and analyze their performance in different situations. Absorber Board-level Shield (ABLS) ANALYTICAL SOFTWARE VBROP VBROP is a versatile Windows® 95/98/NT-based optimizer of multi-layered stacks for reflection or maximum transmission at specified frequencies, angle of incidence and polarization. The visual basic front-end makes the software extremely user friendly, with interactive analysis of layer properties versus performance. It is useful for the design, optimization and detailed performance analysis of RAM, RAS, radomes and microwave windows. 113 www.lairdtech.com ANTENNAS & RECEPTION | EMBEDDED WIRELESS | EMI | TELEMATICS | THERMAL | WIRELESS AUTOMATION & CONTROL Americas: +1.800.634.2673 Europe: +49.8031.24600 ASEAN: +65.6243.8022 China: +86.757.2563.8860 India: +91.80.40740.400 x448 Japan: +81.45.473.6808 Korea: +82.10.8706.7469 Taiwan: +886.2.22901234 x163 www.lairdtech.com EMI-CAT-ESSENTIALS 1213 Any information furnished by Laird and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of Laird materials rests with the end user, since Laird and its agents cannot be aware of all potential uses. Laird makes no warranties as to the fitness, merchantability or suitability of any Laird materials or products for any specific or general uses. Laird, Laird Technologies, Inc or any of its affiliates or agents shall not be liable for incidental or consequential damages of any kind. All Laird products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2013 Laird Technologies, Inc. All Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trademarks or registered trademarks of Laird Technologies, Inc. or an affiliate company thereof. Other product or service names may be the property of third parties. Nothing herein provides a license under any Laird or any third party intellectual property rights.