122-1-A-5/2

Series 122 Single Pole 4mm 2  ™ Reed Relays — Stacking on 4 mm x 4 mm pitch allowing the highest packing density currently available — 3 or 5 V coils — 10 W, 0.5 A switching — 1 Form A (SPST) normally open (NO) energize to make — Fast operate and release times making these relays ideal for high speed test systems — Plastic package with internal mu-metal magnetic screen — Ideal for A.T.E. switching matrices or multiplexers — Sputtered ruthenium instrumentation grade switch — Insulation resistance >1012 Ω —  Additional build options are available — Many benefits compared to industry standard relays (see last page) 1 Package Type The Series 122 reed relay range is part of Pickering’s new ultra-high density 4 mm2 product line, which take up the minimum board area of only 4 mm x 4 mm, allowing the highest packing density currently available. The range features a sputtered ruthenium instrumentation grade switch rated at 10 Watts, 0.5 Amps. These are the same reed switches as used in the long established Pickering Series 112, 113 and 116 but are orientated vertically within the package, allowing this high density. If a higher rating is required, please consider our Series 120 which are rated up to 1.0 Amp at 20 Watts but with a higher profile height. If a lower profile height is required, please consider our Series 124 with a height of just 9.5 mm whilst rated up to 10 Watts, 0.5 Amps switching. The small size of the package does not allow an internal diode. Back EMF suppression diodes are included in many relay drivers but if they are not, and depending on your drive methods, these may have to be provided externally. While socketing relays is not normally recommended due to the risk of affecting contact resistance integrity, it is appreciated that sockets may sometimes be desired for ease of servicing/replacement, in the case of a relay being damaged or reaching the end of its working life. The device has pins on a 2 mm square pitch. There are suitable connectors available from some manufacturers, both SMD and Through Hole, that will allow these relays to be stacked in either a row or in a matrix on a 4 mm pitch. Pickering Electronics' Series 122 Industry standard reed relay of the same electrical specification The above actual size graphic shows sixteen Series 122 Relays packed into an area of 1.6 cm x 1.6 cm. In comparison, only four of the industry standard reed relays can be fitted into the same area. A total of 528 Series 122 relays on a Pickering Interfaces ultra-high-density PXI module illustrates the packing density of these extremely small Reed Relays. 1 pickeringrelay.com ISSUE 1.2 JAN 2022 Examples of Packing Density Specification Single Pole 4mm 2 ™ Reed Relays – Series 122 Switch Ratings - Dry Switches 1 Form A (energize to make) 10 W at 200 V The reed switch in the Series 122 is suitable for low level or 'cold' switching. In accordance with Pickering convention, this switch is referred to as type number 2. There is no general purpose switch (type number 1) currently available in this series, but the type 2 is suitable for all applications if it is used within its specified ratings. This means that high inrush currents, particularly caused by capacitive loads must be avoided. Series 122 switch ratings - contact ratings for each switch type Switch No Switch form Power rating Max. switch current Max. carry current Max. switching volts Life expectancy ops typical (see Note1) Operate time inc bounce (max) Release time Special features 2 A 10 W 0.5 A 0.5 A 200 108 0.2 ms 0.1 ms All applications Note1: Life Expectancy The life of a reed relay depends upon the switch load and end of life criteria. For example, for an ‘end of life’ contact resistance specification of 1 Ω, switching low loads (10 V at 10 mA resistive) or when ‘cold’ switching, typical life is approx 2.5 x 108 ops. At the maximum load (resistive), typical life is 1 x 106 ops. In the event of abusive conditions, e.g. high currents due to capacitive inrushes, this figure reduces considerably. Pickering will be pleased to perform life testing with any particular load condition. Operating Voltages Coil voltage - nominal Must operate voltage - maximum at 25°C Must release voltage - minimum at 25°C 3V 2.25 V 0.3 V 5V 3.75 V 0.5 V Environmental Specification/Mechanical Characteristics In the table below, the upper temperature limit can be extended to +125 °C if the coil drive voltage is increased to accommodate the resistance/temperature coefficient of the copper coil winding. This is approximately 0.4% per °C. This means that at 125 °C the coil drive voltage will need to be increased by approximately 40 x 0.4 =16% to maintain the required magnetic drive level. Please contact sales@pickeringrelay.com for assistance. Operating Temperature Range -20 ºC to +85 ºC Storage Temperature Range -35 ºC to +100 ºC Shock Resistance 50 g Vibration Resistance (10 - 2000 Hz) 20 g Soldering Temperature (max) (10 s max) 270 ºC Washability (Proper drying process is recommended) Fully Sealed 2 pickeringrelay.com Specification Single Pole 4mm 2 ™ Reed Relays – Series 122 Dry Relay: Series 122 Coil data and type numbers Device Type 1 Form A, Switch No. 2 Package Type 1 Type Number Coil (V) Max. Coil contact resistance resistance (initial) 122-1-A-3/2 3 125 Ω 122-1-A-5/2 5 350 Ω 0.18 Ω Insulation resistance (minimum at 25 °C) (see Note4) Capacitance (typical) (see Note2, 3) Switch to coil @1kV DC Across switch Closed switch to coil Across open switch 1012 Ω 1012 Ω 1.6 pF 0.25 pF Note2: Switch to coil capacitance Due to the asymmetrical internal construction of the relay, the capacitance to the coil from one switch connection is approximately half the capacitance of the other switch connection, pin 1 is lower. In some applications this feature may be used to advantage for example, in a multiplexer where it is desirable to minimize the capacitance of the common connection to maximize bandwidth. Note3: Capacitance across open switch The capacitance across the open switch was measured with other connections guarded. Note4: Insulation resistance Insulation resistance will reduce at higher temperatures. For more information on temperature effects click here, or contact Pickering for more in depth guidance. The technical information shown in this data sheet could contain inaccuracies or typographical errors. This information may be periodically changed or updated and these changes will be included in future versions of this data sheet. For different values, latest specifications and product details, please contact your local Pickering sales office. For FREE evaluation samples go to: pickeringrelay.com/samples 3 pickeringrelay.com Specification Single Pole 4mm 2 ™ Reed Relays – Series 122 Pin Configuration, Weights and Dimensional Data (dimensions in inches, millimeters in brackets) 0.153 (3.9) Package Type Type Package 11 0.153 (3.9) Weight: Typical Typical 0.37 Weight: 0.37g g Cut away corner indicates Pin 1 Pin 0.01 (0.25) 4 0.492 (12.5) 1 Form A 0.125 (3.2) Pin 0.02 (0.5) 1 0.08 (2.0) 3 2 0.08 (2.0) 0.08 (2.0) Connection details - viewed from underside 0.08 (2.0) 4 pickeringrelay.com Specification Single Pole 4mm 2 ™ Reed Relays – Series 122 Similar Relays Comparison If the Series 122 is unsuitable for your application, Pickering also manufactures two other series of reed relays with similar characteristics, but in different package sizes. Series Name 124-1-A 122-1-A 120-1-A 3.9 (0.153) 3.9 (0.153) 3.9 (0.153) 3.9 (0.153) 3.9 (0.153) 3.9 (0.153) 9.5 (0.375) 12.5 (0.492) 15.5 (0.61) Package Volume (mm3) 145 191 236 Typical Weights (g) 0.28 0.37 0.49 Contact Configuration 1-A (SPST) 1-A (SPST) 1-A (SPST) Physical Outline Depth Width Height mm (inches) 1 Reed Switch Type Dry Dry Dry Dry Switching Voltage (V) 170 200 200 200 Switching Current (A) 0.5 0.5 1.0 0.5 Carry Current (A) 0.5 0.5 1.2 1.2 Switch Power (W) 10 10 20/15 10 Reed Relay Selection Tool Because Pickering offer the largest range of high-quality reed relays, sometimes it can be difficult to find the right reed relay you require. That is why we created the Reed Relay Selector, this tool will help you narrow down our offering to get you the correct reed relay for your application. To try the tool today go to: pickeringrelay.com/reed-relay-selector-tool 5 pickeringrelay.com Ordering Information Single Pole 4mm 2 ™ Reed Relays – Series 122 Standard Build Options The Series 122 Reed Relays are available with a number of standard build options to tailor them to your specific application. These options are detailed in the table below. If you decide to go ahead and specify one, or more, of these options you will be allocated a unique part number suffix. Mechanical Build Options Electrical Build Options Special pin configurations or pin lengths Different coil resistance Special print with customer’s own part number or logo Operate or de-operate time Pulse capability Enhanced specifications Non-standard coil voltages and resistance figures Special Life testing under customer’s specific load conditions Specific environmental requirements Controlled thermal EMF possibility Customization If your specific requirements are not met by standard relay, or any of the standard build options, please speak to us to discuss producing a customized reed relay to service your specific application: pickeringrelay.com/contact 3D Models Interactive 3D models of the complete range of Pickering relay products in STEP, IGS and SLDPRT formats can be downloaded from the website: pickeringrelay.com/3d-models Part Number Description:  122 -  1 - A - 5 / 2 - xxx Series Number of reeds Switch form Coil voltage Switch number (only Type 2 available) Unique suffix (if standard build option selected) Help If you need any technical advice or other help, please do not hesitate to contact our Technical Sales Department. We will always be pleased to discuss Pickering relays with you. email: techsales@pickeringrelay.com Contact Us 6 o n g v it e y y L o n g v it e L UK Headquarters - email: sales@pickeringrelay.com | Tel. +44 1255 428141 USA - email: ussales@pickeringrelay.com | Tel. +1 781 897 1710 Germany - email: desales@pickeringtest.com | Tel. +49 89 125 953 160 Product France - email: frsales@pickeringtest.com | Tel. +33 9 72 58 77 00 25+Years 100% Tested Longevity Nordic - email: ndsales@pickeringtest.com | Tel. +46 340 69 06 69 Czech Republic: czsales@pickeringtest.com | Tel. +420 558-987-613 China - email: chinasales@pickeringtest.com | Tel. +86 4008 799 765 For a full list of agents, distributors and representatives visit: pickeringrelay.com/agents pickeringrelay.com Single Pole 4mm 2 ™ Reed Relays – Series 122 10 Key Benefits of Pickering Reed Relays Pickering Reed Relays Typical Industry Reed Relays Instrumentation Grade Reed Switches with vacuum sputtered Ruthenium plating to ensure stable, long life up to 5x10E9 operations. Often low grade Reed Switches with electroplated Rhodium plating resulting in higher, less stable contact resistance. 22 Formerless Coil Construction Formerless coil construction increases the coil winding volume, maximizing magnetic efficiency, allowing the use of less sensitive reed switches resulting in optimal switching action and extended lifetime at operational extremes. Use of bobbins decreases the coil winding volume, resulting in having less magnetic drive and a need to use more sensitive reed switches which are inherently less stable with greatly reduced restoring forces. 3 Magnetic Screening Mu-metal magnetic screening (either external or internal), enables ultra-high PCB side-by-side packing densities with minimal magnetic interaction, saving significant cost and space. Pickering Mu-Metal magnetic screen - interaction approx. 5% Lower cost reed relays have minimal or no magnetic screening, resulting in magnetic interaction issues causing changes in operating and release voltages, timing and contact resistance, causing switches to not operate at their nominal voltages. Typical industry screen - interaction approx. 30% 4 SoftCenter™ technology, provides maximum cushioned protection of the reed switch, minimising internal lifetime stresses and extending the working life and contact stability. Transfer moulded reed relays (produced using high temperature/pressure), result in significant stresses to the glass reed switch which can cause the switch blades to deflect or misalign leading to changes in the operating characteristics, contact resistance stability and operating lifetime. 100% testing for all operating parameters including dynamic contact wave-shape analysis with full data scrutiny to maintain consistency. Simple dc testing or just batch testing which may result in non-operational devices being supplied. 1 Instrumentation Grade Reed Switches SoftCenter™ Technology 5 100% Dynamic Testing X-Ray of Pickering mu-metal magnetic screen X-Ray of typical industry magnetic screen Dynamic Contact Resistance Test Operate Contact Resistance Key Benefit Release 6 100% Inspection at Every Stage of Manufacturing 7 Inspection at every stage of manufacturing maintaining high levels of quality. Often limited batch inspection. Stress testing of the manufacturing processes, from -20°C to +85°C to -20°C, repeated 3 times. Rarely included resulting in field failures. +85°C 100% Thermal Cycling -20°C Product Longevity Limited ability to customize. Pickering are committed to product longevity; our reed relays are manufactured and supported for more than 25 years from introduction, typically much longer. Most other manufacturers discontinue parts when they reach a low sales threshold; costing purchasing and R&D a great deal of unnecessary time and money to redesign and maintain supply. o n g v it e o n g v it e y Our reed relays can be customized easily, e.g. special pin configurations, enhanced specifications, non-standard coil or resistance figures, special life testing, low capacitance, and more. L 10 Mass production: Usually large batch sizes and with no quick-turn manufacturing. L 9 Custom Reed Relays Flexible manufacturing processes allow quick-turn manufacturing of small batches. y 8 Flexible Manufacturing Process Product 25+Years Longevity For more information go to: pickeringrelay.com/10-key-benefits 7 pickeringrelay.com © Copyright (2022) Pickering Electronics. All Rights Reserved Pickering Electronics maintains a commitment to continuous product development, consequently we reserve the right to vary from the description given in this data sheet. Coil Voltage