103-1-A-5/2D

Low Capacitance SIL/SIP Reed Relays 

**Series 103** 

## Up to **20 W** switching 

Stacking on **0.2 Inches** pitch 

Highest quality instrumentation grade switches 

**==> picture [86 x 31] intentionally omitted <==**

**----- Start of picture text -----**<br>
Package Type @ 1<br>2<br>@ EE<br>**----- End of picture text -----**<br>


Inter-terminal capacitances are a fraction of that for standard SIL relays **1 Form A** or **1 Form A** ( **Coaxial** ) configurations 

Pin compatible with standard **0.2 Inch SIL** relays 

Optional internal mu-metal magnetic screen 

Optional internal coaxial electrostatic screen 

Insulation resistance **>10[12 ] Ω** 

## e Suitable for wide bandwidth A.T.E. switching matrices and attenuator switching ° Additional build options are available Lo ° Many benefits compared to industry standard relays Fo (see last page) 

The Pickering Series 103 is a range of Single-in-Line reed relays intended for such applications as wide bandwidth A.T.E. switching matrices, attenuator switching or any other applications where exceptionally low levels of inter-terminal capacitances are required, for example, when carrying fast rise time pulses. A version with an internal co-axial electrostatic screen is available which is ideal for applications where capacitively coupled noise from switch to coil connections is undesirable. The co-axial device has a characteristic impedance of 50 ohms and is also suitable for RF applications, HF performance is similar to the Series 102M. 

The range consists of two basic types, the first achieves ultra low capacitance levels of typically 0.1pf from each switch connection to the coil and typically 0.08pf across the open switch contacts, by virtue of an internal coaxial electrostatic screen or guard connection. Where it is not possible to drive a guard, the second type has inherently low capacitance figures of typically 0.4pf from each switch connection to the coil and typically 0.1pf across the open switch contacts. These figures for the unguarded version are around one quarter of those for standard SIL devices. 

Two types of Form A (energize to make) switches are available, a general purpose switch (switch no.1) and a vacuum sputtered ruthenium switch (switch no.2) which is ideal for very low level or “cold” switching applications. 

## **Switch Ratings** 

|1 Form A (energize to make)|1 Form A co-axial (energize to make)|
|---|---|
|Up to 20 W at 1 A|Up to 20 W at 1 A (50 Ω)|



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Specification 

Low Capacitance SIL/SIP Reed Relays – Series 103 

**Series 103 switch ratings - contact ratings for each switch type** 

|Switch<br>No<br>~~——~~|Switch<br>form<br>~~——~~|Power rating<br>~~——~~|Max.<br>switch<br>current<br>~~——~~|Max.<br>carry<br>current<br>~~——~~|Max.<br>switching<br>volts<br>~~——~~|Life<br>expectancy<br>ops typical<br>(see Note1)<br>~~——~~|Operate<br>time inc<br>bounce<br>(max)<br>~~——~~|Release<br>time<br>~~——~~|Special<br>features<br>~~——~~|
|---|---|---|---|---|---|---|---|---|---|
|1<br>2<br>~~——~~|A<br>A<br>~~——~~|20 W (*15 W)<br>10 W<br>~~——~~|1.0 A<br>0.5 A<br>~~——~~|1.2 A<br>1.2 A<br>~~——~~|200<br>200<br>~~——~~|109<br>108<br>~~——~~|0.5 ms<br>0.5 ms<br>~~——~~|0.2 ms<br>0.2 ms<br>~~——~~|General purpose<br>Low level<br>~~——~~|



## Note[1] : 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 10 x 10[9] ops. At the maximum load (resistive), typical life is 1 x 10[7] 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 3 V 2.25 V 0.3 V 5 V 3.75 V 0.5 V 12 V 9 V 1.2 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 ~~———~~ 

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Specification 

Low Capacitance SIL/SIP Reed Relays – Series 103 

## **Coil data and type numbers** 

|**Coil data and type numbers**|**Coil data and type numbers**|**Coil data and type numbers**|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|Device Type|Switch||Type Number|Coil<br>(V)|Coil<br>resistance|Max.<br>contact<br>resistance<br>(initial)|Insulation<br>resistance<br>(minimum at<br>25 °C)<br>(see Note4)||Capacitance<br>(typical)<br>(see Note2)||
||Form|Type|||||Switch<br>to coil|Across<br>switch|Closed<br>switch<br>to coil<br>(C1 & C2)|Across<br>open<br>switch<br>(C3)|
|No magnetic<br>screen or guard<br>screen (*Note<br>15 W for 5 V coil)<br>Package Type 1|A<br>A|1<br>2|103-1-A-5/1D *<br>103-1-A-5/2D|5<br>5|150 Ω<br>150 Ω|0.15 Ω<br>0.12 Ω|1012Ω|1012Ω|0.4 pF|0.13 pF<br>0.10 pF|
|Magnetic screen<br>only (*Note<br>15 W for 5 V coil)<br>Package Type 1|A<br>A|1<br>2|103M-1-A-5/1D *<br>103M-1-A-5/2D|5<br>5|150 Ω<br>150 Ω|0.15 Ω<br>0.12 Ω|1012Ω|1012Ω|0.45 pF|0.13 pF<br>0.10 pF|
|Guard screen only<br>(*Note<br>15 W for 5 V coil)<br>Package Type 2|A<br>A<br>A<br>A<br>A|2<br>1<br>2<br>1<br>2|103G-1-A-3/2D<br>103G-1-A-5/1D *<br>103G-1-A-5/2D<br>103G-1-A-12/1D<br>103G-1-A-12/2D|3<br>5<br>5<br>12<br>12|300 Ω<br>500 Ω<br>500 Ω<br>1000 Ω<br>1000 Ω|0.12 Ω<br>0.15 Ω<br>0.12 Ω<br>0.15 Ω<br>0.12 Ω|1012Ω|1012Ω|0.1 pF|0.08 pF<br>0.10 pF<br>0.08 pF<br>0.10 pF<br>0.08pF|
|Guard screen and<br>magnetic screen<br>Package Type 2|A<br>A<br>A<br>A<br>A|2<br>1<br>2<br>1<br>2|103GM-1-A-3/2D<br>103GM-1-A-5/1D<br>103GM-1-A-5/2D<br>103GM-1-A-12/1D<br>103GM-1-A-12/2D|3<br>5<br>5<br>12<br>12|300 Ω<br>500 Ω<br>500 Ω<br>1000 Ω<br>1000 Ω|0.12 Ω<br>0.15 Ω<br>0.12 Ω<br>0.15 Ω<br>0.12 Ω|1012Ω|1012Ω|0.2 pF|0.08 pF<br>0.10 pF<br>0.08 pF<br>0.10 pF<br>0.08pF|



When an internal diode is required, the suffix D is added to the part number as shown in the table. 

## Note[2] : Capacitance across open switch 

The capacitance across the open switch was measured with other connections guarded. 

## Note[3] : Capacitance values 

The value will depend upon on the mode of connection/guarding of unused terminals. Please contact technical sales for details. 

## Note[4] : 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** 

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Specification 

Low Capacitance SIL/SIP Reed Relays – Series 103 

**Pin Configuration, Weights and Dimensional Data** (dimensions in inches, millimeters in brackets) 

**==> picture [461 x 264] intentionally omitted <==**

**----- Start of picture text -----**<br>
Package Type 1 0.75 (19.1) 0.19 (4.8)<br>103-1-A<br>Weight: Typical 0.92 g<br>103M-1-A 0.32<br>(8.1) 1 Form A<br>Weight: Typical 1.14 g +<br>0.125<br>(3.2) | Pin 1 e 1 e 3 5 n 7<br>0.02 0.01<br>0.2 0.2 0.2 (0.5) (0.25)<br>(5.1) (5.1) (5.1)<br>Package Type 2 0.75 (19.1) 0.19 (4.8)<br>103G-1-A<br>e tT t—<br>Weight: Typical 1.11 g<br>103GM-1-A 0.32<br>Weight: Typical 1.28 g (8.1) 1 Form A<br>Coaxial +<br>0.125<br>(3.2) JMm Pin 1 + | - (0.5)0.02 am i 0.01 oS 1 Ar |) 2 on 3 a 5 ae 6 7<br>0.1 0.1 0.2 0.1 0.1 (0.25)<br>(2.54) (2.54) (5.1) (2.54) (2.54)<br>**----- End of picture text -----**<br>


**Important:** Where the optional internal diode is fitted or for all Form B types, the correct coil polarity must be observed, as shown by the + symbol on the schematics. 

## **Simplified Equivalent Circuits** 

It is convenient to consider the internal capacitances as a delta network as in the circuit diagram alongside. C1 is the capacitance between one end of the switch and the coil, C2 is the capacitance between the other end of the switch and the coil. These two figures will be approximately equal. C3 is the capacitance across the open switch. When measuring the values of any one of these capacitances, it is necessary to “guard” the unused relay connections to avoid the parallel effects of the other capacitances, connection details when performing these measurements on a capacitance bridge are shown below. Relays with an internal electrostatic screen have the screen terminals guarded in all cases. 

**==> picture [382 x 60] intentionally omitted <==**

**----- Start of picture text -----**<br>
Measurement of C1- switch to coil Measurement of C2- switch to coil Measurement of C3 - open switch<br>Bridge Measuring  Bridge Guard Terminal<br>Terminals<br>Bridge Guard Terminal<br>Bridge Measuring  Bridge Measuring<br>Bridge Guard Terminals Terminals<br>Terminal<br>**----- End of picture text -----**<br>


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Specification 

Low Capacitance SIL/SIP Reed Relays – Series 103 

## **Similar Relays Comparison** 

If the Series 103GM is unsuitable for your application, Pickering also manufactures three other reed relay types with similar characteristics, but in different package sizes. 

|Series Name|Series Name|111RF-1-A|109RF50-1-A|109RF50-1-A|109RF75-1-A|109RF75-1-A|102M-1-A|102M-1-A|102M-1-B|102M-1-B|103GM-1-A|103GM-1-A|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|Physical Outline<br>~~eo~~||~~eo~~|~~eo~~||||~~eo~~||||~~eo~~||
|Depth<br>~~eo~~|mm<br>(inches)<br>~~eo~~<br>~~ee ee~~|3.7 (0.145)<br>~~eo~~|3.7 (0.145)<br>~~eo~~||||4.8 (0.19)<br>~~eo~~||4.8 (0.19)<br>~~eo~~||4.8 (0.19)<br>~~eo~~||
|Width<br>~~eo~~<br>~~a~~<br>~~ee~~||10.0 (0.39)<br>~~eo~~<br>~~ee~~|15.1 (0.595)<br>~~eo~~<br>~~a~~<br>~~ee~~||||19.1 (0.75)<br>~~eo~~<br>~~a~~<br>~~ee~~||19.1 (0.75)<br>~~eo~~<br>~~a~~<br>~~ee~~||19.1 (0.75)<br>~~eo~~<br>~~ee~~||
|Height<br>~~eo~~<br>~~ee~~||6.6 (0.26)<br>~~eo~~<br>~~ee~~|6.6 (0.26)<br>~~eo~~<br>~~ee~~||||7.6 (0.3)<br>~~eo~~<br>~~ee~~||10.2 (0.4)<br>~~eo~~<br>~~ee~~||8.1 (0.32)<br>~~eo~~<br>~~ee~~||
|Package Volume<br>(mm3)<br>~~ee ee~~||245<br>~~ee~~|369<br>~~ee~~<br>~~ee~~||||697<br>~~ee~~||936<br>~~ee~~||743<br>**2**<br>~~ee~~||
|Typical Weights (g)<br>~~ee ee~~<br>~~Oe~~<br>~~a~~||0.56<br>~~ee~~<br>~~Oe~~<br>|0.88<br>~~ee~~<br>~~Oe~~<br>||0.87<br>~~ee~~<br>~~Oe~~<br>~~ee~~<br>~~eee~~<br>||1.43<br>~~ee ~~<br>~~Oe~~<br>~~eee~~<br>||2.19<br> ~~ee~~<br>~~Oe~~<br>~~eee~~<br>||1.28<br>~~ee~~<br>~~Oe~~<br>~~eee~~<br>||
|Contact<br>Configuration<br>~~Oe~~<br>~~ee~~<br>~~a~~||1-A<br>(SPST)<br>~~Oe~~<br>~~ee~~<br>|1-A<br>(SPST)<br>~~Oe~~<br>~~ee~~<br>||1-A<br>(SPST)<br>~~Oe~~<br>~~ee~~<br>~~ee~~<br>~~eee~~<br>||1-A<br>(SPST)<br>~~Oe~~<br>~~ee~~<br>~~eee~~<br>||1-B<br>(SPNC)<br>~~Oe~~<br>~~ee~~<br>~~eee~~<br>||1-A<br>(SPST)<br>~~Oe~~<br>~~ee~~<br>~~eee~~<br>||
|Reed Switch Type<br>~~a~~<br>~~—~~||Dry<br>|Dry<br>|Dry<br>|Dry<br>~~eee~~<br>|Dry<br>~~eee~~<br>|Dry<br>~~eee ~~<br><br>~~ee~~||Dry<br> ~~eee ~~<br><br>~~eee~~||Dry<br> ~~eee~~<br><br>~~eee~~||
|Stand-off Voltage<br>(V)<br>~~eee~~<br>~~—~~<br>~~|~~||-<br>~~eee~~<br>~~fF~~|-<br>~~eee~~<br>~~fF~~|-<br>~~eee~~|-<br>~~eee~~|-<br>~~eee~~|-<br>~~eee~~<br>~~ee~~|-<br>~~eee~~<br>~~ee~~|-<br>~~eee~~<br>~~eee~~|-<br>~~eee~~<br>~~eee~~|-<br>~~eee~~<br>~~eee~~|-<br>~~eee~~<br>~~eee~~|
|Switching Voltage<br>(V)<br>~~—~~<br>~~|~~||170<br>~~fF~~|200<br>~~fF~~|200|200|200|200<br>~~ee~~|200<br>~~ee~~|200<br>~~eee~~|200<br>~~eee~~|200<br>~~eee~~|200<br>~~eee~~|
|Switching Current<br>(A)<br>~~—~~<br>~~|~~<br>~~et~~<br>~~—~~<br>~~|~~||0.5<br>~~fF~~<br>~~et~~<br>~~fF~~|1.0<br>~~fF~~<br>~~fF~~|0.5|1.0|0.5|0.5<br>~~ee~~|1<br>~~ee ~~|0.5<br> ~~eee~~|1<br>~~eee ~~|1<br> ~~eee~~|0.5<br>~~eee~~|
|Carry Current<br>(A)<br>~~—~~<br>~~|~~<br>~~po~~||0.5<br>~~fF~~|1.2<br>~~fF~~|1.2|1.2|1.2|1.2|1.2|1.2|1.2|1.2|1.2|
|Switch Power<br>(W)<br>~~—~~<br>~~|~~<br>~~po~~||10<br>~~fF~~|15/20<br>~~fF~~|10|15/20|10|10|20|10|20|20|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: ee pickeringrelay.com/reed-relay-selector-tool 

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Ordering Information 

Low Capacitance SIL/SIP Reed Relays – Series 103 

## **Standard Build Options** 

The Series 103 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|Very low capacitance|
|Custom packaging possibility|Operate or de-operate time|
||Pulse capability|
||Enhanced specifications|
||Non-standard coil voltages and resistance figures|
||Special Life testing under customer’s specific load<br>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:    103 G M  -  1  -  A - 5  /  2  D  -  xxx** Series Guard (omit if not required) Mag. screen (omit if not required) Number of reeds Switch form Coil voltage Switch number (see table on pages 2) Diode if fitted (omit if not required) 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** 

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** y ate x France - email:  Nordic - email:  ndsales@pickeringtest.comfrsales@pickeringtest.com — |  Tel. +33 9 72 58 77 00  |  Tel. +46 340 69 06 69 **25+LongevityYears 100%Tested** I) NO coen $108s ~~ented~~ “2018.8,> ene Czech Republic:  czsales@pickeringtest.com  |  Tel. +420 558-987-613 PO ES @ Gs macs) "Se YOO, St China - email:  chinasales@pickeringtest.com  |  Tel. +86 4008 799 765 For a full list of agents, distributors and representatives visit:  pickeringrelay.com/agents 

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Low Capacitance SIL/SIP Reed Relays – Series 103 

## **10 Key Benef its** of Pickering Reed Relays 

|**Key Benef it**|**Pickering Reed Relays**|**Typical Industry Reed Relays**||
|---|---|---|---|
|Instrumentation Grade<br>Reed Switches<br>1|Instrumentation Grade Reed Switches<br>with vacuum sputtered Ruthenium<br>plating to ensure stable, long life up to<br>5x10E9 operations.|Often low grade Reed Switches with<br>electroplated Rhodium plating resulting<br>in higher, less stable contact resistance.||
|2<br>Formerless Coil<br>Construction<br>2|Formerless coil construction increases<br>the coil winding volume, maximizing<br>magnetic efficiency, allowing the use of<br>less sensitive reed switches resulting in<br>optimal switching action and extended<br>lifetime at operational extremes.|Use of bobbins decreases the coil<br>winding volume, resulting in having<br>less magnetic drive and a need to use<br>more sensitive reed switches which<br>are inherently less stable with greatly<br>reduced restoring forces.|“Ty<br>mitt)<br>wing,<br>ae<br>Pickering former-less coil<br>Typical industry coil<br>wound on bobbin|
|Magnetic Screening<br>3|Mu-metal magnetic screening (either<br>external or internal), enables ultra-high<br>PCB side-by-side packing densities with<br>minimal magnetic interaction, saving<br>significant cost and space.Pickering<br>Mu-Metal magnetic screen - interaction<br>approx. 5%|Lower cost reed relays have minimal<br>or no magnetic screening, resulting in<br>magnetic interaction issues causing<br>changes in operating and release<br>voltages, timing and contact resistance,<br>causing switches to not operate at their<br>nominal voltages.Typical industry<br>screen - interaction approx. 30%|X-Ray of Pickering<br>mu-metal<br>magnetic screen<br>X-Ray of typical<br>industry<br>magnetic screen|
|**SoftCenter**™<br>Technology<br>4|**SoftCenter**™technology, provides<br>maximum cushioned protection of the<br>reed switch, minimising internal lifetime<br>stresses and extending the working life<br>and contact stability.|Transfer moulded reed relays (produced<br>using high temperature/pressure),<br>result in significant stresses to the glass<br>reed switch which can cause the switch<br>blades to deflect or misalign leading to<br>changes in the operating characteristics,<br>contact resistance stability and operating<br>lifetime.|Pickering<br>Typical industry<br>soft center<br>thermo-setting<br>protection of<br>hard moulded protection<br>the reed switch<br>ofthe reed switch|
|100% Dynamic<br>Testing<br>5|100% testing for all operating<br>parameters including dynamic contact<br>wave-shape analysis with full data<br>scrutiny to maintain consistency.|Simple dc testing or just batch testing<br>which may result in non-operational<br>devices being supplied.|Coil Voltage<br>Contact Resistance<br>Dynamic Contact Resistance Test<br>Operate<br>Release|
|100% Inspection<br>at Every Stage of<br>Manufacturing<br>6|Inspection at every stage of<br>manufacturing maintaining high levels<br>of quality.|Often limited batch inspection.|EE<br>a,|
|100% Thermal<br>Cycling<br>7|Stress testing of the manufacturing<br>processes, from -20°C to +85°C to -20°C,<br>repeated 3 times.|Rarely included resulting in field failures.|+85°C<br>-20°C|
|<br>Flexible<br>Manufacturing<br>Process<br>8|Flexible manufacturing processes allow<br>quick-turn manufacturing of small<br>batches.|Mass production:  Usually large<br>batch sizes and with no quick-turn<br>manufacturing.|Ga<br>=\, TURNARDUND<br>ee7||
|Custom Reed Relays<br>9|Our reed relays can be customized<br>easily, e.g. special pin configurations,<br>enhanced specifications, non-standard<br>coil or resistance figures, special life<br>testing, low capacitance, and more.|Limited ability to customize.||
|Product Longevity<br>10|Pickering are committed to product<br>longevity; our reed relays are<br>manufactured and supported for<br>more than 25 years from introduction,<br>typically much longer.|Most other manufacturers discontinue<br>parts when they reach a low sales<br>threshold; costing purchasing and R&D<br>a great deal of unnecessary time and<br>money to redesign and maintain supply.|**Product**<br>**Longevity**<br>**25+**<br>**Years**|



For more information go to: pickeringrelay.com/10-key-benefits 

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