S2-L2-DC12V

S 

## **FEATURES** 

## **1. Compact with high sensitivity** 

The high-efficiency polarized electromagnetic circuits of the 4-gap balanced armature and our exclusive spring alignment method achieves, with high-sensitivity in a small package, a relay that can be directly controlled by a driver chip. 

## **2. Strong resistance to vibration and shock** 

Use of 4G-BA technology realizes strong resistance to vibration and shock. 

## **2a2b/3a1b/4a 4 A polarized power relay** 

## **3. High reliability and long life** 

Our application of 4G-BA technology, along with almost perfectly complete twin contact, ensures minimal contact bounce and high reliability. 

## **4. Ability to provide wide-ranging control** 

Use of 4G-BA technology with goldclad silver alloy contacts in a twin contact structure enables control across a broad range from microcurrents of 100 A 100 mV DC to 4 A 250 V AC. 

## **5. Latching types available** 

With 4G-BA technology, as well as single side stable types, convenient 2 coil latching types for circuit memory applications are also available. 

**6. Wide variety of contact formations available** 

The compact size of the 4G-BA mechanism enables the provision of many kinds of package, including 2a2b, 3a1b, and 4a. These meet your needs across a broad range of applications. 

## S RELAYS 

## **7. Low thermal electromotive force relay** 

High sensitivity (low power consumption) is realized by 4G-BA technology. Separation of the coil and spring sections has resulted in a relay with extremely low levels of thermal electromotive force (approx. 0.3 V). 

## **8. DIL terminal array** 

Deployed to fit a 2.54 mm .100 inch grid, the terminals are presented in DIL arrays which match the printed circuit board terminal patterns commonly in international use. 

**9. Relays that push the boundaries of relay efficiency** 

High-density S relays take you close to the limits of relay efficiency. 

- **10.Sockets are available.** 

## **TYPICAL APPLICATIONS** 

Telecommunications equipment, data processing equipment, facsimiles, alarm equipment, measuring equipment. 

## **4-GAP BALANCED ARMATURE MECHANISM** 

## **1. Armature mechanism has excellent resistance to vibration and shock** 

The armature structure enables free rotation around the armature center of gravity. Because the mass is maintained in balance at the fulcrum of the axis of rotation, large rotational forces do not occur even if acceleration is applied along any vector. The mechanism has proven to have excellent resistance to vibration and shock. All our S relays are based on this balanced armature mechanism, which is able to further provide many other characteristics. 

## **2. High sensitivity and reliability provided by 4-gap balanced armature mechanism** 

As a (polarized) balanced armature, the S relay armature itself has two permanent magnets. Presenting four interfaces, the armature has a 4-gap structure. As a result, the rotational axis at either end of the armature is symmetrical and, in an energized into a polarized state, the twin magnetic armature interfaces are subject to repulsion on one side and attraction on the other. This mechanism, exclusive to 

Panasonic, provides a highly efficient polarized magnetic circuit structure that is both highly sensitive and has a small form factor. Moreover, suitability for provision with many types of contact array and other advantages promise to make it possible to provide many of the various characteristics that are coming to be demanded of relays. 

## **HOW IT WORKS** (single side stable type) 

1) When current is passed through the coil, the yoke becomes magnetic and polarized. 

2) At either pole of the armature, repulsion on one side and attraction on the other side is caused by the interaction of the poles and the permanent magnets of the armature. 

3) At this time, opening and closing operates owing to the action of the simultaneously moulded balanced armature mechanism, so that when the force of the contact breaker spring closes the contact on one side, on the other side, the balanced armature opens the contact (2a2b). 

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Repulsion<br>Permanent magnet<br>Attraction<br>Residual plate<br>Attraction<br>Axis<br>Repulsion<br>N<br>NS<br>NS<br>S<br>**----- End of picture text -----**<br>


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## **ORDERING INFORMATION** 

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S DC<br>**----- End of picture text -----**<br>


Contact arrangement 

2: 2 Form A 2 Form B 

3: 3 Form A 1 Form B 4: 4 Form A 

Operating function Nil: Single side stable L: 1 coil latching L2: 2 coil latching Coil voltage (DC) 3, 5, 6, 12, 24, 48 V 

Note: UL/CSA approved type is standard. 

## **TYPES** 

|**TYPES**|||||
|---|---|---|---|---|
|Contact arrangement|Nominal coil voltage|Single side stable|1 coil latching|2 coil latching|
|||Part No.|Part No.|Part No.|
|2 Form A 2 Form B|3V DC|S2-DC3V|S2-L-DC3V|S2-L2-DC3V|
||5V DC|S2-DC5V|S2-L-DC5V|S2-L2-DC5V|
||6V DC|S2-DC6V|S2-L-DC6V|S2-L2-DC6V|
||12V DC|S2-DC12V|S2-L-DC12V|S2-L2-DC12V|
||24V DC|S2-DC24V|S2-L-DC24V|S2-L2-DC24V|
||48V DC|S2-DC48V|S2-L-DC48V|S2-L2-DC48V|
|3 Form A 1 Form B|3V DC|S3-DC3V|S3-L-DC3V|S3-L2-DC3V|
||5V DC|S3-DC5V|S3-L-DC5V|S3-L2-DC5V|
||6V DC|S3-DC6V|S3-L-DC6V|S3-L2-DC6V|
||12V DC|S3-DC12V|S3-L-DC12V|S3-L2-DC12V|
||24V DC|S3-DC24V|S3-L-DC24V|S3-L2-DC24V|
||48V DC|S3-DC48V|S3-L-DC48V|S3-L2-DC48V|
|4 Form A|3V DC|S4-DC3V|S4-L-DC3V|S4-L2-DC3V|
||5V DC|S4-DC5V|S4-L-DC5V|S4-L2-DC5V|
||6V DC|S4-DC6V|S4-L-DC6V|S4-L2-DC6V|
||12V DC|S4-DC12V|S4-L-DC12V|S4-L2-DC12V|
||24V DC|S4-DC24V|S4-L-DC24V|S4-L2-DC24V|
||48V DC|S4-DC48V|S4-L-DC48V|S4-L2-DC48V|



Standard packing: Tube: 50 pcs.; Case: 500 pcs. 

## **RATING** 

## **1. Coil data** 

## 1) Single side stable 

|1) Single|side stable||||||||
|---|---|---|---|---|---|---|---|---|
|Type|Nominal coil<br>voltage|Pick-up<br>voltage<br>(at 20C68F)|Drop-out<br>voltage<br>(at 20C68F)|Nominal operating<br>current [10%]<br>(at 20C68F)|Coil resistance<br>[10%]<br>(at 20C68F)|Nominal operating<br>power|Coil inductance|Max. allowable<br>voltage<br>(at 40C104F)|
|Standard|3V DC|70%V or less<br>of nominal<br>voltage<br>(Initial)|10%V or more<br>of nominal<br>voltage<br>(Initial)|66.7mA|45|200mW|Approx. 23mH|5.5V DC|
||5V DC|||38.5mA|130|192mW|Approx. 65mH|9.0V DC|
||6V DC|||33.3mA|180|200mW|Approx. 93mH|11.0V DC|
||12V DC|||16.7mA|720|200mW|Approx. 370mH|22.0V DC|
||24V DC|||8.4mA|2,850|202mW|Approx. 1,427mH|44.0V DC|
||48V DC|||5.6mA|8,500|271mW|Approx. 3,410mH|75.0V DC|



## 2) 1 coil latching 

|Type|Nominal coil<br>voltage|Pick-up<br>voltage<br>(at 20C68F)|Drop-out<br>voltage<br>(at 20C68F)|Nominal operating<br>current [10%]<br>(at 20C68F)|Coil resistance<br>[10%]<br>(at 20C68F)|Nominal operating<br>power|Coil inductance|Max. allowable<br>voltage<br>(at 40C104F)|
|---|---|---|---|---|---|---|---|---|
|Standard|3V DC|70%V or less<br>of nominal<br>voltage<br>(Initial)|10%V or more<br>of nominal<br>voltage<br>(Initial)|33mA|90|99mW|Approx. 0.04mH|8.4V DC|
||5V DC|||16mA|300|80mW|Approx. 0.14mH|15.3V DC|
||6V DC|||16mA|360|96mW|Approx. 0.14mH|16.8V DC|
||12V DC|||8mA|1450|96mW|Approx. 0.6mH|33.7V DC|
||24V DC|||4mA|5,700|96mW|Approx. 2.05mH|66.7V DC|
||48V DC|||3mA|16,000|144mW|Approx. 8.9mH|111V DC|



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## 3) 2 coil latching 

|Type|Nominal coil<br>voltage|Nominal coil<br>voltage|Set voltage<br>(at 20C68F)|Reset voltage<br>(at 20C68F)|Nominal operating<br>current [10%]<br>(at 20C68F)|Nominal operating<br>current [10%]<br>(at 20C68F)|Nominal operating<br>current [10%]<br>(at 20C68F)|Coil resistance<br>[10%]<br>(at 20C68F)|Coil resistance<br>[10%]<br>(at 20C68F)|Nominal operating<br>power<br>(at 20C68F)|Nominal operating<br>power<br>(at 20C68F)|Coil inductance|Coil inductance|Max. allowable<br>voltage<br>(at 40C104F)|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||||||Set coil|Reset<br>coil||Set coil|Reset<br>coil|Set coil|Reset<br>coil|Set coil|Reset<br>coil||
|Standard|3V DC||70%V or less<br>of nominal<br>voltage<br>(Initial)|70%V or less<br>of nominal<br>voltage<br>(Initial)|66.7mA|66.7mA||45|45|200mW|200mW|Approx.<br>10mH|Approx.<br>10mH|5.5V DC|
||5V DC||||38.5mA|38.5mA||130|130|192mW|192mW|Approx.<br>31mH|Approx.<br>31mH|9.0V DC|
||6V DC||||33.7mA|33.7mA||180|180|200mW|200mW|Approx.<br>40mH|Approx.<br>40mH|11.0V DC|
||12V DC||||16.7mA|16.7mA||720|720|200mW|200mW|Approx.<br>170mH|Approx.<br>170mH|22.0V DC|
||24V DC||||8.4mA|8.4mA||2,850|2,850|202mW|202mW|Approx.<br>680mH|Approx.<br>680mH|44.0V DC|
||48V DC||||7.4mA|7.4mA||6,500|6,500|355mW|355mW|Approx.<br>1,250mH|Approx.<br>1,250mH|65.0V DC|
|**2. Specifications**|||||||||||||||
|Characteristics||Item|||||Specifications||||||||
|Contact||Arrangement|||||2 Form A 2 Form B, 3 Form A 1 Form B, 4 Form A||||||||
|||Initial contact resistance, max.|||||Max. 50 m(By voltage drop 6 V DC 1A)||||||||
|||Electrostatic capacitance (initial)|||||Approx. 3pF||||||||
|||Contact material|||||Au clad Ag alloy (Cd free)||||||||
|||Thermal electromotive force (at nominal coil voltage)<br>(initial)|||||Approx. 3V||||||||
|Rating||Nominal switching capacity (resistive load)|||||4 A 250 V AC, 3 A 30 V DC||||||||
|||Max. switching power (resistive load)|||||1,000 VA, 90 W||||||||
|||Max. switching voltage|||||250 V AC, 48 V DC (30 to 48 V DC at less than 0.5 A)||||||||
|||Max. switching current|||||4 A (AC), 3 A (DC)||||||||
|||Minimum operating power|||||100 mW (Single side stable, latching)||||||||
|||Nominal operating power|||||200 mW (Single side stable, latching)||||||||
|||Min. switching capacity (Reference value)*1|||||100A 100 m V DC||||||||
|Electrical<br>characteristics||Insulation resistance (Initial)|||||Min. 10,000M(at 500V DC)<br>Measurement at same location as “Initial breakdown voltage” section.||||||||
|||Breakdown voltage<br>(Initial)||Between open contacts|||750 Vrms for 1min. (Detection current: 10mA.)||||||||
|||||Between contact sets|||1,000 Vrms for 1min. (Detection current: 10mA.)||||||||
|||||Between contact and coil|||1,500 Vrms for 1min. (Detection current: 10mA.)||||||||
|||Temperature rise (at 20C68F)|||||Max. 35C<br>(By resistive method, nominal voltage applied to the coil; contact carrying current: 4A.)||||||||
|||Operate time [Set time] (at 20C68F)|||||Max. 15 ms [15 ms] (Nominal voltage applied to the coil, excluding contact bounce time.)||||||||
|||Release time [Reset time] (at 20C68F)|||||Max. 10 ms [15 ms] (Nominal voltage applied to the coil, excluding contact bounce time.)<br>(without diode)||||||||
|Mechanical<br>characteristics||Shock resistance||Functional|||Min. 490 m/s2(Half-wave pulse of sine wave: 11 ms; detection time: 10s.)||||||||
|||||Destructive|||Min. 980 m/s2(Half-wave pulse of sine wave: 6 ms.)||||||||
|||Vibration resistance||Functional|||10 to 55 Hz at double amplitude of 3 mm (Detection time: 10s.)||||||||
|||||Destructive|||10 to 55 Hz at double amplitude of 4 mm||||||||
|Expected life||Mechanical|||||Min. 108(at 50 cps)||||||||
|||Electrical|||||Min. 105(4 A 250 V AC), Min. 2105(3 A 30 V DC) (at 20 times/min.)||||||||
|Conditions||Conditions for operation, transport and storage*2|||||Ambient temperature: –55C to +65C–67F to +149F<br>Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)||||||||
|||Max. operating speed|||||20 times/min. for maximum load, 50 cps for low-level load (1 mA 1 V DC)||||||||
|Unit weight|||||||Approx. 8 g.28 oz||||||||



*1 This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the actual load. *2 Refer to “6. Usage, Storage and Transport Conditions“ in AMBIENT ENVIRONMENT section in Relay Technical Information. 

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## **REFERENCE DATA** 

## 1. Maximum switching power 

## 2. Life curve 

## 3. Contact reliability 

Condition: 1V DC, 1mA Detection level 10  Tested Sample: S4-24V, 10pcs 

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1,000 1,000 99.9<br>DC resistive load AC resistive loa d 99.0<br>95.0<br>500<br>70.0<br>50.0<br>100 30.0<br>100<br>10.0<br>50 5.0<br>10 30 2.0 m = 1.6<br>125 V AC 1.0 μ : 79 million time<br>10 (cos 250 V AC ϕ  = 1.0) 0.5 σ 95% reliabilit : 51 million time y limit:<br>(cos ϕ = 1.0) 0.2 14.6 million times(weibul probability paper)<br>0.1<br>0.1 1 10 0 1 2 3 4 5 1.0 10.0<br>Contact current, A Contact current, A No. of operations,  × 10 [7]<br>4.-(1) Coil temperature rise 4.-(2) Coil temperature rise 5. Operate and release time<br>Tested Sample: S4-24V, 4 Form A Tested Sample: S4-24V, 4 Form A (Single side stable type)<br>Tested Sample: S4-24V, 10pcs<br>100 100 20<br>90 90 18<br>80 80 16<br>70 4A 70 14<br>60 60 12 Release time (with diode)<br>50 0A 50 10<br>Max.<br>40 40 8 Min.<br>30 30 Coil opower, 0.2 Wperating 6 Operate time<br>Max.<br>20 20 4 Max. Min.<br>Min.<br>10 10 2<br>Release time<br>0 0 0<br>0.2 0.4 0.6 0.8 1.0 1.2 1 2 3 4 5 6 80 100 120 140<br>Coil operating power, W Contact current, A Coil applied voltage, %V<br>410<br>×<br>Life,<br>Contact voltage, V<br>CTemperature rise, ° CTemperature rise, °<br>Operate/release time, ms<br>**----- End of picture text -----**<br>


## 6. Influence of adjacent mounting 

## 7. Thermal electromotive force 

Note: When installing an S-relay near another, and there is no effect from an external magnetic field, be sure to leave at least 10 mm .394 inch between relays in order to achieve the performance  between relays in order to achieve the performance listed in the catalog. 

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200<br>from an external magnetic field, be sure to leave at least 10 mm<br>(1) (2) (3) (1) & (3) relays .394 inch between relays in order to achieve the performance  between relays in order to achieve the performance<br>are energized listed in the catalog. NR-H<br>+30 Single side stable +30 2 coil latching 100<br>Drop-out voltage<br>0 0 NF relay S relay<br>Pick-up voltage Pick-up voltage<br>-30 5 10 -30 5 10 2 4 6 8 10 12<br>Minute<br>Inter-relay distance, mm Inter-relay distance, mm<br>Rate of change, % Rate of change, %<br>**----- End of picture text -----**<br>


## 8. Effect from an external magnetic field 

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Single side stable Single side stable<br>+30 +30<br>φ φ<br>Pick-up voltage Drop-out voltage<br>0 0<br>Pick-up voltage<br>Drop-out voltage<br>-30 -30<br>50 100 50 100<br>+30 2 coil latching G +30 2 coil latching G<br>0 Pick-up voltage 0<br>Pick-up voltage<br>-30 -30<br>50 100 50 100<br>G G<br>Rate of change, % Rate of change, %<br>Rate of change, % Rate of change, %<br>**----- End of picture text -----**<br>


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am DIMENSIONS (mm inch) Download  CAD DataCAD Data from our Web site.<br>**----- End of picture text -----**<br>


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GD CAD Data External dimensions Schematic (Bottom view)<br>28±0.5 12 Single side stable 2 coil latching<br>1.102±0.02 .472 (Deenergized position) (Reset condition)<br>1 2 3 4 5 6 1 2 3 4 5 6<br>1 10±0.5<br>.039 .394±0.02 + + +<br>4 0.5 2a2b - - -<br>.157 0.4 .020<br>1.0 .016<br>y — .0551.4 tt .039 .3007.62 | 12 Sgge0]/ad6d4d6 11 10 9 8 7 12 11 10 9 8 7<br>1 2 3 4 5 6 1 2 3 4 5 6<br>3.118 121 112 103 49 58 67 .3007.62 .47212 3a1b -+ -+ -+<br>| .020 Er 0.5 .2005.08 12 ees 11 10 9 8 7 12 11 10 9 8 7<br>General tolerance: 0.3 .012 1 2 3 4 5 6 1 2 3 4 5 6<br>PC board pattern (Copper-side view) + + +<br>4a - - -<br>2.54 12 Ba 11 10  550 9 8 7 12 /83d656 11 10 9 8 7<br>.100<br>12-1.3 dia.<br>B .047-.051 dia. isc 2.54 o FH: EH<br>.100<br>Tolerance: 0.1 .004<br>SAFETY STANDARDS<br>UL/C-UL (Recognized) CSA (Certified)<br>File No. Contact rating File No. Contact rating<br>E43028 4A 250V AC,  [1] /20HP 125V AC (FLA1.5A) LR26550  4A 250V AC,  [1] /20HP 125V AC,  [1] /20HP 250V AC<br>1/20HP 250V AC (FLA0.75A), 3A 30V DC etc. 3A 30V DC<br>**----- End of picture text -----**<br>


## **SAFETY STANDARDS** 

## **NOTES** 

1. Based on regulations regarding insulation distance, there is a restriction on same-channel load connections between terminals No. 2, 3 and 4, 5, as well as between No. 8, 9 and 10, 11. See the figure below for an example. 

2. Please note that when this relay (1 Form A 1 Form B types) operates and releases, contacts a and b may go ON at the same time. 

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2 3 4 5<br>2 3 4 5<br>11 10 9 8<br>11 10 9 8<br>fa e EH<br>• Between 2, 3 and 4, 5:  • Between 2, 3 and 4, 5:<br>different channels, therefore not possible same channels, therefore possible<br>• Between 10, 11 and 8, 9: different channels, therefore not possible • Between 10, 11 and 8, 9: same channels, therefore possible<br>No good Good<br>**----- End of picture text -----**<br>


## **For Cautions for Use, see  Relay Technical Information.** 

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## **ACCESSORIES** 

## S RELAYS SOCKET 

## **DIMENSIONS** (Unit: mm inch) 

External dimensions 

PC board pattern (Copper-side view) 

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12.4±0.6<br>.488±.024 7.6<br>.299<br>5.085.085.085.085.08<br>12-1.6 dia. hole .200.200.200.200.200<br>12-.063 dia. hole<br>18.3±0.6 Tolerance: 0.1 .004<br>.720±.024<br>.0471.2±.012±0.3 .61015.5±±.0240.6<br>0.4±0.1<br>.016±.004<br>4.85±0.3 3.4±0.3<br>.191±.012 5.08±0.3 7.62±0.3 .134±.012<br>.200±.012 .300±.012<br>come 32.4±0.6<br>1.5±0.3 1.276±.024 1.5±0.3 Terminal width: 1.3 .051<br>.059±.012 .059±.012 Terminal thickness: 1.2 .047<br>                                                 General tolerance: 0.3 .012<br>**----- End of picture text -----**<br>


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S-PS<br>**----- End of picture text -----**<br>


## **TYPES** 

Product name Part No. S Relays Socket S-PS 

## **SPECIFICATIONS** 

4 A Maximum continuous current Note: Don’t insert or remove relays while in the energized condition. Breakdown voltage 1,500 Vrms between terminals Insulation resistance More than 100 M between terminals at 500 V DC Mega Heat resistance 150 3C (302 5.4F) for 1 hour. 

## **NOTES** 

## **Inserting and removing method** 

Rib Inserting method: Insert the relay as shown in Fig. 1 unit the rib of the relay snaps into the clip of the socket. Fig. 1 Removing method: (1) Remove the relay straight from the socket holding the shaded portion of the — Fig. 2 relay as shown in Fig. 2. (2) When sockets are mounted in close proximity, use a slotted screw driver as ~~2f~~ shown in Fig. 3. Fig. 3 

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