AV40K1210401NIR1HT

Features n Formerly a product n Five model sizes available - 0805, 1206, 1210, 1812 and 2220 n Supply voltages: 12 V, 24 V and 42 V n Broad range of current and energy handling capabilities n Low clamping voltage - Vc n Non-sensitive to mildly activated fluxes n Non-plastic coating for better flammability rating n +150 °C maximum continuous operating temperature n Load Dump Energy up to 50 J available upon request n RoHS compliant* n AEC-Q200 Grade 0 upon request AVHT Series - High Temperature Automotive Grade Varistors General Information Multilayered Varistor Symbol Almost all electronic systems in an automobile, e.g., anti-lock brake system, direct ignition system, airbag control system, wiper motors, etc. are susceptible to damage from destructive voltage transients. Bourns® AVHT Series multilayered varistors are transient suppressors with temperature independent suppression characteristics enabling protection from -55 °C to 150 °C. U AVHT Series varistors offer excellent transient energy distribution. AV varistors require significantly less space and pad area than silicon TVS diodes, offering greater circuit board layout flexibility for the designer. Absolute Maximum Ratings Parameter Continuous: Steady State Applied Voltage DC Voltage Range (Vdc) Transient: Load Dump Energy (WLD) Jump Start Capability (5 minutes), (Vjump) Peak Single Pulse Surge Current, 8/20 µs Waveform (Imax) Single Pulse Surge Energy, 10/1000 µs Waveform (Wmax) Operating Ambient Temperature Storage Temperature Range Threshold Voltage Temperature Coefficient Response Time Climatic Category Value Units 16 to 56 V 1 to 25 ** 24.5 to 65 120 to 1200 0.3 to 30 -55 to +150 -55 to +150 < +0.05 (.472) D1 P1 ± 0.1 (P1 ± .004) B0 F ± 0.05 (F ± .002) 20 ° MAX: W = 2 ± 0.5 (.079 ± .020) 12.80 + 0.5 (.504 + .020) DIMENSIONS: MM (INCHES) 21 ± 0.8 (.827 ± .315) W1 A - 2.0 (A - 0.79) 60 + 2.0 (2.362 + .079) Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. MAX. 4 ± 0.1 (.157 ± .004) 0.6 (.024) 10 ° MAX. 1.75 ± 0.1 (.069 ± .004) DIA. 1.5 +0.1/-0 (.059 +.004/-0) P2 COVER TAPE W +0.3/-0.1 (W +.012/-.004) E2 MAX. B1 0.1 (.004) K0 T2 A0 (NOTE A) D1 B0 F ± 0.05 (F ± .002) P1 ± 0.1 (P1 ± .004) AVHT Series High Temperature Automotive 8 12 Potentiometer CDDFN5-0504N - SMD TVS/Steering ArrayGrade Varistors 3312 - 2-mm & Diode 20 °Trimming MAX: W = (.315) (.472) (NOTE A) 12 (.472) 10 ° MAX: W > Packaging Specifications (Continued) Reel 2 ± 0.5 (.079 ± .020) 21 ± 0.8 (.827 ± .315) 12.80 + 0.5 (.504 + .020) W1 A - 2.0 (A - 0.79) DIMENSIONS: 60 + 2.0 (2.362 + .079) MM (INCHES) W2 W3 Dimension A0 B0 Model Size 0805 1206 1210 1812 2220 1.6 (.063) 2.4 (.094) 1.9 (.075) 3.75 (.148) 2.9 (.114) 3.7 (.146) 1.8 (.071) 3.75 (.148) 5 (.197) 5.6 (.220) 6.25 (.246) 1.1 (.043) K0 MAX. D1 DIA. MIN. E2 MIN. P1 Model Size 0805 F W 2 (.079) 8.2 (.323) 1.5 (.059) 10.25 (.404) 8 (.315) 4.35 (.171) 0.3 (.012) 6.25 (.246) 4 (.157) B1 MAX. Dimension T2 MAX. W1 W2 MAX. W3 A DIA. 1206 1210 3.5 (.138) 8.0 (.315) 3.5 (.138) 8.4 ± 1.5 (.331 ± .059) 14.4 (.567) 7.9 to 10.9 (.311 to .429) 1812 2220 5.5 (.217) 12.0 (.480) 6.5 (.256) 12.4 ± 2 (.488 ± .079) 18.4 (.724) 11.9 to 15.4 (.469 to .606) 180/330 (7.087/12.992) Packaging Quantities Series Voltage Range (V) AVHT 14 17 20 to 40 Model Size 0805 1206 1210 1812 2220 3500 3500 2500 2500 2500 2500 2500 2500 1000 1000 1000 1000 1000 1000 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.  AVHT Series - High Grade Varistors 3312 - 2 mm SMDTemperature Trimming Automotive Potentiometer Soldering Recommendations for SMD Components Popular soldering techniques used for surface mounted components are Wave and Infrared Reflow processes. Both processes can be performed with Pb-containing or Pb-free solders. The terminations for these soldering techniques are NiSn Barrier Type End Terminations. End Termination NiSn End Termination Designation Recommended and Suitable for RoHS Compliant AVHT Series...Ni Pb-containing and Pb-free soldering Yes Wave Soldering This process is generally associated with discrete components mounted on the underside of printed circuit boards, or for large top-side components with bottom-side mounting tabs to be attached, such as the frames of transformers, relays, connectors, etc. SMD varistors to be wave soldered are first glued to the circuit board, usually with an epoxy adhesive. When all components on the PCB have been positioned and an appropriate amount of time is allowed for adhesive curing, the completed assembly is then placed on a conveyor and run through a single, double wave process. Infrared Reflow Soldering These reflow processes are typically associated with top-side component placement. This technique utilizes a mixture of adhesive and solder compounds (and sometimes fluxes) that are blended into a paste. The paste is then screened onto PCB soldering pads specifically designed to accept a particular sized SMD component. The recommended solder paste wet layer thickness is 100 to 300 µm. Once the circuit board is fully populated with SMD components, it is placed in a reflow environment, where the paste is heated to slightly above its eutectic temperature. When the solder paste reflows, the SMD components are attached to the solder pads. Solder Fluxes Solder fluxes are generally applied to populated circuit boards to keep oxides from forming during the heating process and to facilitate the flowing of the solder. Solder fluxes can be either a part of the solder paste compound or separate materials, usually fluids. Recommended fluxes are: • non-activated (R) fluxes, whenever possible • mildly activated (RMA) fluxes of class L3CN • class ORLO Activated (RA), water soluble or strong acidic fluxes with a chlorine content > 0.2 wt. % are NOT RECOMMENDED. The use of such fluxes could create high leakage current paths along the body of the varistor components. When a flux is applied prior to wave soldering, it is important to completely dry any residual flux solvents prior to the soldering process. Thermal Shock To avoid the possibility of generating stresses in the varistor chip due to thermal shock, a preheat stage to within 100 °C of the peak soldering process temperature is recommended. Additionally, SMD varistors should not be subjected to a temperature gradient greater than 4 °C/sec., with an ideal gradient being 2 °C/sec. Peak temperatures should be controlled. Wave and Reflow soldering conditions for SMD varistors with Pb-containing solders are shown on the next page in Fig. 1 and 2 respectively, while Wave and Reflow soldering conditions for SMD varistors with Pb-free solders are shown in Fig. 1 and 3. Whenever several different types of SMD components are being soldered, each having a specific soldering profile, the soldering profile with the least heat and the minimum amount of heating time is recommended. Once soldering has been completed, it is necessary to minimize the possibility of thermal shock by allowing the hot PCB to cool to less than 50 °C before cleaning. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.  AVHT Series - High Automotive Grade Varistors 3312 - 2 mm SMDTemperature Trimming Potentiometer Soldering Recommendations for SMD Components (Continued) NiSn End Terminations Inspection Criteria When Wave or Infrared Reflow processes are used, the inspection criteria to determine acceptable solder joints will depend on several key variables, principally termination material process profiles. Pb-containing Wave and IR Reflow Soldering Typical “before” and “after” soldering results for NiSn Barrier Type End Terminations can be seen in Fig. 4. NiSn Barrier Type varistors Fig. 4 Soldering Criteria Wave and IR Reflow form a reliable electrical contact and metallurgical bond between the end terminations and the solderfor pads. The bond between these two Pb-containing Soldering metallic surfaces is exceptionally strong and has been tested by both vertical pull and lateral (horizontal) push tests. The results exceed established industry standards for adhesion. NiSn End Terminations Fig. 4 Soldering Criteria for Wave and IR Reflow Pb-containing Soldering NiSn End Terminations Fig. 5 Soldering Criteria for Wave and IR Reflow Pb-free Soldering Pb-free Wave and IR Reflow Soldering NiSn End Terminations Solder forms a metallurgical junction with the entire volume of the end termination, i.e., it diffuses from pad to end termination across the inner side, forming a “mirror” or “negative meniscus. The height of the solder penetration can be clearly seen on the end termination and is always 30 % higher than the chip height. Since barrier type terminations on Bourns® chips do not require the use of sometimes problematic nickel and tin-alloy electroplating processes, these varistors are truly considered environmentally friendly. Specifications are subject to change without notice. Users should verify actual deviceCriteria performance their specific Fig. 5 Soldering forinWave and applications. IR Reflow The products described herein Soldering and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Pb-free  3312 AVHT Series High Temperature Automotive Grade Varistors 3312 2 -mm SMD Trimming Potentiometer - 2-mm SMD Trimming Potentiometer Soldering Recommendations for SMD Components (Continued) Solder Test and Retained Samples Reflow soldering test based on J-STD-020D.1 and soldering test by dipping based on IEC 60068- 2 for Pb-free solders are performed on each production lot as shown in the following chart. Test results and accompanying samples are retained for a minimum of two (2) years. The solderability of a specific lot can be checked at any time within this period, should a customer require this information. Resistance to Flux Solderability Static Leaching (Simulation of Reflow Soldering) Dynamic Leaching (Simulation of Wave Soldering) Dipping L3CN, ORL0 Dipping L3CN, ORL0, R Dipping L3CN, ORL0, R Dipping with Agitation L3CN, ORL0, R 235 ± 5 260 ± 5 235 ± 5 250 ± 5 250 ± 5 280 ± 5 250 ± 5 Soldering Time (sec.) Burn-in Conditions 2 Vdcmax, 48 hours 210 - 10 - > 15 - Acceptance Criterion dVn < 5 %, idc must stay unchanged > 95 % of end termination must be covered by solder Test Soldering method Flux Pb Solder 62Sn / 36Pb / 2Ag Pb Soldering Temperature (°C) Pb-Free Solder Pb-Free Soldering Temperature (°C) 235 ± 5 Sn96 / Cu0,4-0,8 / 3-4Ag > 95 % of end termination must be intact and covered by solder > 95 % of end termination must be intact and covered by solder Rework Criteria - Soldering Iron Unless absolutely necessary, the use of soldering irons is NOT recommended for reworking varistor chips. If no other means of rework is available, the following criteria must be strictly followed: • Do not allow the tip of the iron to directly contact the top of the chip • Do not exceed the following soldering iron specifications: Output Power........................................30 Watts Maximum Temperature of Soldering Iron Tip........280 °C Maximum Soldering Time......................................10 Seconds Maximum Storage Conditions SMD varistors should be used within 1 year of purchase to avoid possible soldering problems caused by oxidized terminals. The storage environment should be controlled, with humidity less than 40 % and temperature between -25 and +45 °C. Varistor chips should always be stored in their original packaged unit. When varistor chips have been in storage for more than 1 year, and when there is evidence of solderability difficulties, Bourns can “refresh” the terminations to eliminate these problems. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.  AVHT Series - High Grade Varistors 3312 - 2 mm SMDTemperature Trimming Automotive Potentiometer Reliability - Lifetime Pb-free Wave and IR Reflow Soldering In general, reliability is the ability of a component to perform and maintain its functions in routine circumstances, as well as in hostile or unexpected circumstances. The Mean life of the AV series is a function of: • Factor of Applied Voltage • Ambient Temperature Mean life is closely related to Failure rate (formula). Mean life (ML) is the arithmetic mean (average) time to failure of a component. Failure rate is the frequency with which an engineered system or component fails, expressed, for example, in failures per hour. Failure rate is usually time dependent, and an intuitive corollary is that the rate changes over time versus the expected life cycle of a system. Failure rate formula - calculation Λ= 109 ML [h] AVHT Series Mean Life on Arrhenius Model [fit] 108 Years FAV = Vapl Vmax Vapl..............applied voltage Vmax............maximum operating voltage Mean Life (ML) FAV - Factor of Applied Voltage 107 1000 106 100 105 10 104 1 120 100 80 60 40 20 Ta (°C) Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.  AVHT Series - High Temperature Automotive CDDFN5-0504N - TVS/Steering Diode ArrayGrade Varistors Reliability Testing Procedures Varistor test procedures comply with CECC 42200, IEC 1051-1/2 and AEC-Q200. Test results are available upon customer request. Special tests can be performed upon customer request. Reliability Parameter Test Tested According to CECC 42200, Test 4.20 or IEC 1051-1, Test 4.20, AEC-Q200 Test 8 - 1000 h at UCT CECC 42200, Test C 2.1 or IEC 1051-1, Test 4.5 10 pulses in the same direction at 2 pulses per minute at maximum peak current for 10 pulses CECC 42200, Test C 2.1 or IEC 1051-1, Test 4.5 10 pulses in the same direction at 1 pulse every 2 minutes at maximum peak current for 10 pulses AC/DC Bias Reliability AC/DC Life Test Pulse Current Capability Imax 8/20 µs Pulse Energy Capability Wmax 10/1000 µs WLD Capability WLD x 10 ISO 7637, Test pulse 5, 10 pulses at rate of 1 per minute Vjump Capability Vjump 5 min. Increase of supply voltage to V ≥ Vjump for 1 minute Climatic Sequence Environmental and Storage Reliability Thermal Shock Steady State Damp Heat Storage Test CECC 42200, Test 4.16 or IEC 1051-1, Test 4.17 a) Dry heat, 16h, UCT, Test Ba, IEC 68-2-2 b) Damp heat, cyclic, the first cycle: 55 °C, 93 % RH, 24 h, Test Db 68-2-4 c) Cold, LCT, 2 h, Test Aa, IEC 68-2-1 d) Damp heat cyclic, remaining 5 cycles: 55 °C, 93 % RH, 24 h/cycle, Test Bd, IEC 68-2-30 CECC 42200, Test 4.12, Test Na, IEC 68-2-14, AEC-Q200 Test 16, 5 CECC 42200, Test 4.17, Test Ca, IEC 68-2-3, AEC-Q200 Test 6, 56 days, 40 °C, 93 % RH, AEC-Q200 Test 7: Bias, Rh, T all at 85. IEC 68-2-2, Test Ba, AEC-Q200 Test 3, 1000 h at maximum storage temperature Condition to be Satisfied after Testing |δVn (1 mA)| < 10 % |δVn (1 mA)| < 10 % no visible damage |δVn (1 mA)| < 10 % no visible damage |δVn (1 mA)| < 15 % no visible damage |δVn (1 mA)| < 15 % no visible damage |δVn (1 mA)| < 10 % |δVn (1 mA)| < 10 % no visible damage |δVn (1 mA)| < 10 % |δVn (1 mA)| < 5 % Continued on Next Page Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.  AVHT Series High Temperature Automotive Grade Varistors 3312 3312 - 2 -mm 2-mm SMD SMD Trimming Trimming Potentiometer Potentiometer Reliability Testing Procedures (Continued) Reliability Parameter Test Solderability Resistance to Soldering Heat Mechanical Reliability Electrical Transient Conduction Tested According to CECC 42200, Test 4.10.1, Test Ta, IEC 68-2-20 solder bath and reflow method CECC 42200, Test 4.10.2, Test Tb, IEC 68-2-20 solder bath nad reflow method JIS-C-6429, App. 1, 18N for 60 sec. - same for AEC-Q200 Terminal Strength Test 22 JIS-C-6429, App. 2, 2 mm min. Board Flex AEC-Q200 test 21 - Board flex: 2 mm flex min. CECC 42200, Test 4.15, Test Fc, IEC 68-2-6, AEC-Q200 Test 14 Frequency range 10 to 55 Hz (AEC: 10-2000 Hz) Vibration Amplitude 0.75 m/s2 or 98 m/s2 (AEC: 5 g for 20 minutes) Total duration 6 h (3x2 h) (AEC: 12 cycles each of 3 directions) Waveshape - half sine CECC 42200, Test 4.14, Test Ea, IEC 68-2-27, AEC-Q200 Test 13. Mechanical Shock Acceleration = 490 m/s2 (AEC: MIL-STD-202-Method 213), Pulse duration = 11 ms, Waveshape - half sine; Number of shocks = 3x6 AEC-Q200 Test 30: Test pulses 1 to 3. ISO-7637-1 Pulses Also other pulses - freestyle. Condition to be Satisfied after Testing Solderable at shipment and after 2 years of storage, criteria: >95% must be covered by solder for reflow meniscus |δVn (1 mA)| < 5 % No visual damage |δVn (1 mA)| < 2 % No visible damage |δVn (1 mA)| < 2 % No visible damage |δVn (1 mA)| < 10 % No visible damage |δVn (1 mA)| < 10 % No visible damage Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. AVHT Series - High Temperature Automotive CDDFN5-0504N - TVS/Steering Diode ArrayGrade Varistors Terminology Term Symbol Definition Rated AC Voltage ������������������������� Vrms ������������������Maximum continuous sinusoidal AC voltage (