UA2-12NU

**DATA SHEET** 

**MINIATURE SIGNAL RELAY** 

## **RoHS Compliant** 

## **UA2/UB2 SERIES** 

## **SUPER-COMPACT SIZE, SLIM-PACKAGE** 

## **DESCRIPTION** 

NEXEM UA2/UB2 relay is a new generation miniature signal relay, super-compact and slim. 

## **FEATURES** 

(Basic insulation class on 200 V working voltage) 

## **APPLICATIONS** 

Electronic switching systems, PBX, Terminal equipment, Telephone system 

## **For Right Use of Miniature Relays** 

## **DO NOT EXCEED MAXIMUM RATINGS** . 

Do not use relays under exceeding conditions such as over ambient temperature, over voltage and over current. Incorrect use could result in abnormal heating, damage to related parts or cause burning. **READ CAUTIONS IN THE SELECTION GUIDE** . 

Read the cautions described in EM Devices' "Miniature Relays" when you choose relays for your application. 

The information in this document is subject to change without notice. 

   - © **EM Devices Corporation 2017** 

- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## **DIMENSIONS AND PAD LAYOUTS** Unit: mm (inch) 

**UA2 SERIES** 

**==> picture [413 x 168] intentionally omitted <==**

**----- Start of picture text -----**<br>
(mm)<br>10.6 (0.417) 5.7 (0.224)<br>| "| (1.5) 7.6 (1.5)<br>3.2 2.2 2.2<br>8- Φ 0.85<br>0.5 8.0<br>(0.020) (0.315)<br>3.2<br>3.4<br>(0.134)<br>[1.5] [1.5] NOTE. General tolerance :±0.1<br>3.2 2.2 2.2 3.2<br>(0.126) (0.087) (0.087) (0.126) (Bottom view)<br>Tolerance of lead pitch is ±0.15mm (0.006inch) Lead size  0.4x0.2 ±0.1<br>Other tolerances ±0.3mm (0.012inch)<br>**----- End of picture text -----**<br>


**NJ type:  Lead length 2.8mm** 

**==> picture [389 x 167] intentionally omitted <==**

**----- Start of picture text -----**<br>
UB2 SERIES  (mm)<br>(1.5) 7.6 (1.5)<br>STANDARD 5.7 (0.224) 3.2 2.2 2.2<br>10.6  (0.417)<br>8.8<br>max. 5.3<br>(0.315)<br>3.1<br>3.2<br>(0.126)<br>[1.5] [1.5]<br>3.2 2.2 2.2 7.4 (0.291) 0.8<br>(0.126) (0.087) (0.087)<br>NOTE. General tolerance :±0.1<br>somueena L e<br>Tolerance of lead pitch is ±0.15mm (0.006inch) Lead size  0.4x0.2 ±0.1<br>Other tolerances ±0.3mm (0.012inch) (Top view)<br>**----- End of picture text -----**<br>


## **MINIMUM FOOTPRINT TYPE** 

**==> picture [392 x 171] intentionally omitted <==**

**----- Start of picture text -----**<br>
(mm)<br>10.6  (0.417) 5.7 (0.224) 7.6<br>(1.5) (1.5)<br>a | Pa 3.2 va 2.2 2.2 n<br>9.0<br>max.<br>(0.354)<br>4.6<br>3.2 2.25<br>(0.126)<br>[1.5] [1.5]<br>3.2 2.2 2.2 5.7 (0.224)<br>(0.126) (0.087) (0.087) 0.8<br>Tolerance of lead pitch is ±0.15mm (0.006inch) Lead size  0.4x0.2 ±0.1<br>Other tolerances ±0.3mm (0.012inch) NOTE. General tolerance :±0.1<br>(Top view)<br>**----- End of picture text -----**<br>


- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

2 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** ~~sis~~ 

## **PIN CONFIGURATIONS** (Bottom view) 

**==> picture [283 x 130] intentionally omitted <==**

**----- Start of picture text -----**<br>
Direction mark Direction mark<br>1    2  3    4  1    2  3    4<br>+  + -<br>S R<br>- - +<br>8    7  6    5 8    7  6    5<br>S: Coil polarity for Set<br>Non-latch type<br>R: Coil polarity for Reset<br>(Not energized position)<br>Single coil latch type<br>(Reset position)<br>**----- End of picture text -----**<br>


## **MARKINGS** (top view) 

**==> picture [290 x 105] intentionally omitted <==**

**----- Start of picture text -----**<br>
(4) (1) Part number<br>(1)    (2) Manufacturer<br>   (3) Country of origin<br>   (4) Date code<br>0501F    (5) Direction mark (pin No. 1 and 8)<br>UB2-4.5NU<br>JAPAN<br>(5)<br>(2) (3)<br>**----- End of picture text -----**<br>


- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

3 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## **GENERAL SPECIFICATIONS** 

|**GENERAL SPECIFICATIONS**|**GENERAL SPECIFICATIONS**|**GENERAL SPECIFICATIONS**||
|---|---|---|---|
|Contact Form|||2 Form C|
|Contact Material<br>~~a~~<br>~~oea~~|||Silver alloywithgold alloyoverlay|
|Contact Ratings<br>~~oe~~|Maximum SwitchingPower<br>~~a~~||30 W,  37.5 VA|
||Maximum SwitchingVoltage<br>~~a~~||220 VDC,  250 VAC|
||Maximum SwitchingCurrent<br>~~a~~<br>~~a~~||1 A|
||Maximum CarryingCurrent<br>~~a~~<br>~~ee~~||1 A<br>~~ee~~|
|Minimum Contact Ratings<br>~~oea~~<br>~~a~~|||10 m VDC, 10µA***1**<br>~~a~~|
|Initial Contact Resistance<br>~~a~~<br>~~a~~|||100 m Ω max.(initial)<br>~~a~~<br>~~a~~|
|Operate Time(Excludingbounce)<br>~~a~~|||Approx. 2 ms<br>~~a~~|
|Release Time(Excludingbounce)<br>~~a~~|||Approx. 1 ms<br>~~a~~|
|Insulation Resistance<br>~~a~~<br>~~a~~|||1000 MΩ at 500 VDC<br>~~a~~<br>~~a~~|
|Withstanding Voltage<br>~~a~~||Between open<br>contacts<br>~~a~~|1000 VAC  (for one minute) 1500 V surge (10x160 µs***2**)<br>~~a~~|
|||Between adjacent<br>contacts|1000 VAC  (for one minute) 1500 V surge (10x160 µs***2**)|
|||Between coil and<br>contacts|1500 VAC  (for one minute) , 2500 V surge (2x10 µs***3**)|
|Shock Resistance|||735 m/s2(75G)  (misoperation)<br>980 m/s2(100G)  (destructive failure)|
|Vibration Resistance|||10 to 55 Hz, double amplitude 3 mm(20G) (misoperation)<br>10 to 55 Hz, double amplitude 5 mm(30G) (destructive failure)|
|Ambient Temperature<br>~~a~~|||-40 to +85 °C<br>~~a~~|
|Coil Temperature Rise<br>~~a~~<br>~~a~~|||18 °C at nominal coil voltage(140mW)<br>~~a~~<br>~~a~~|
|Running Specifications<br>~~i~~||Non-load<br>~~i~~|5x107operations (Non-latch type)***4**<br>1x107operations(latch type)<br>~~i~~|
|||Load<br>~~i~~|30 VDC 1A(resistive), 1x105operations  at 20°C,1Hz<br>~~i~~|
||||125 VAC 0.3A(resistive), 1x105operations  at 20°C,1Hz<br>~~i~~|
|Weight<br>~~Pf~~|||Approx.  1g<br>~~Pf~~|



- **1** This value is a reference value in the resistance load. Minimum capacity changes depending on switching frequency and environment temperature and the load. 

- **2** rise time: 10 µs, decay time to half crest: 160 µs 

- **3** rise time: 2 µs, decay time to half crest: 10 µs 

- **4** This shows the number of operations with fatal defects. Stable characteristics are maintained for 1×10 7 operations. 

4 

- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## **COIL SPECIFICATIONS** 

|**Non-latch Type**<br> at 20°C|
|---|
|Nominal<br>Coil Voltage<br>(VDC)<br>Coil<br>Resistance<br>(Ω)±10%<br>Must Operate<br>Voltage*<br>(VDC)<br>Must Release<br>Voltage*<br>(VDC)<br>Nominal<br>Operating Power<br>(mW)<br>3<br>64.3<br>2.25<br>0.3<br>140<br>4.5<br>145<br>3.38<br>0.45<br>140<br>5<br>178<br>3.75<br>0.5<br>140<br>9<br>579<br>6.75<br>0.9<br>140<br>12<br>1028<br>9.0<br>1.2<br>140<br>24<br>2504<br>18.0<br>2.4<br>230<br>~~sooee~~|
|**Single Coil Latch Type**<br> at 20°C|
|Nominal<br>Coil Voltage<br>(VDC)<br>Coil<br>Resistance<br>(Ω)±10%<br>Set<br>Voltage*<br>(VDC)<br>Reset<br>Voltage*<br>(VDC)<br>Nominal<br>Operating Power<br>(mW)<br>3<br>90<br>2.25<br>2.25<br>100<br>4.5<br>202.5<br>3.38<br>3.38<br>100<br>5<br>250<br>3.75<br>3.75<br>100<br>9<br>810<br>6.75<br>6.75<br>100<br>12<br>1440<br>9.0<br>9.0<br>100<br>~~=———=~~|
|**Non-latch Low Power Consumption Type**<br> at 20°C|
|Nominal<br>Coil Voltage<br>(VDC)<br>Coil<br>Resistance<br>(Ω)±10%<br>Must  Operate<br>Voltage*<br>(VDC)<br>Must Release<br>Voltage*<br>(VDC)<br>Nominal<br>Operating Power<br>(mW)<br>3<br>90<br>2.25<br>0.3<br>100<br>4.5<br>202.5<br>3.38<br>0.45<br>100<br>5<br>250<br>3.75<br>0.5<br>100<br>~~Ta~~|
|Note  * Test by pulse voltage|
|**SAFETY STANDARD AND RATING**|



**==> picture [385 x 216] intentionally omitted <==**

**----- Start of picture text -----**<br>
UL Recognized  CSA Certificated  TUV Certificate<br>(UL508)*  (CSA C22.2 No14)** (EN61810)<br>File No E73266 File No LR46266<br>No. 2050596<br>Creepage and clearance of<br>30 VDC, 1 A (Resistive)<br>coil to contact is more than 2 mm.<br>110 VDC, 0.3 A (Resistive)<br>(According to EN60950)<br>125 VAC, 0.5A (Resistive)<br>Basic insulation class<br>—————<br>* Spacing: UL840, **Spacing: CSA std950<br>RECOMMENDED RELAY DRIVE CONDITIONS<br>  Drive under conditions. If it is impossible, please inquire to  EM Devices .<br>Non-latch type Voltage: within ±5% of nominal voltage<br>Ambient temperature<br>Square pulse (rise and fall time is rapid)   - 40 to +85 °C<br>Single coil latch type  pulse height : within ±5% of nominal voltage<br>a pulse width : more than 10 ms<br>**----- End of picture text -----**<br>


## **RECOMMENDED RELAY DRIVE CONDITIONS** 

- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

> ●Please request for a specification sheet for detailed product data prior to the purchase. 

> ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

5 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## **PART NUMBER SYSTEM** 

**==> picture [441 x 545] intentionally omitted <==**

**----- Start of picture text -----**<br>
U A 2 - 3 S N U<br>NU: Standard<br> NJ: Trimmed lead type<br> NE: Low power consumption type<br> Nil: Non-latch type<br> S:  Single coil latch type<br> Nominal coil voltage<br> (A numerical value of coil voltage)<br>I=  UA2 series<br>U B 2 – 3 S N U – L<br> Packing<br>  Nil: Tube<br>  L:  Embossed carrying tape<br>NU:  Standard<br> NUN: Minimum footprint type<br> NE:  Low power consumption type<br> NEN: Low power consumption, Minimum footprint type<br> Nil: Non-latch type<br> S:  Single coil latch type<br> Nominal coil voltage<br> (A numerical value of coil voltage)<br>E  UB2 series<br>ORDERING PART NUMBERS<br> UA2 series<br>Option Coil Type<br>Nominal<br>Non-latch<br>Coil Voltage<br>Terminal  packing  Non-latch  Single Coil Latch  Low power<br>(VDC)<br>consumption<br>a 3 UA2-3NU UA2-3SNU UA2-3NE<br>4.5 UA2-4.5NU UA2-4.5SNU UA2-4.5NE<br>5 UA2-5NU UA2-5SNU UA2-5NE<br>Standard<br>9 UA2-9NU UA2-9SNU -<br>12 UA2-12NU UA2-12SNU -<br>24 UA2-24NU - -<br>Tube<br>3 UA2-3NJ UA2-3SNJ -<br>4.5 UA2-4.5NJ UA2-4.5SNJ -<br>Trimmed  5 UA2-5NJ UA2-5SNJ -<br>lead  9 UA2-9NJ UA2-9SNJ -<br>12 UA2-12NJ UA2-12SNJ -<br>i—— 24 UA2-24NJ - -<br>**----- End of picture text -----**<br>


> ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

> ●Please request for a specification sheet for detailed product data prior to the purchase. 

> ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

6 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

|Option|Option|Nominal<br>Coil Voltage<br>(VDC)<br>~~oe~~|Coil Type<br>~~oe~~|Coil Type<br>~~oe~~|Coil Type<br>~~oe~~|
|---|---|---|---|---|---|
|Terminal|packing||Non-latch<br>~~oe~~|Single Coil Latch|Non-latch<br>Low power<br>consumption|
|Standard|Tube|3<br>~~oe~~<br>~~a~~|UB2-3NU<br>~~oe~~|UB2-3SNU|UB2-3NE|
|||4.5<br>~~a~~|UB2-4.5NU|UB2-4.5SNU|UB2-4.5NE|
|||5<br>~~a~~|UB2-5NU|UB2-5SNU|UB2-5NE|
|||9<br>~~a~~|UB2-9NU|UB2-9SNU|-|
|||12<br>~~a~~<br>~~a~~|UB2-12NU|UB2-12SNU|-|
|||24<br>~~a~~<br>~~a~~|UB2-24NU|-|-|
||Taping|3<br>~~a~~<br>~~a~~|UB2-3NU-L|UB2-3SNU-L|UB2-3NE-L|
|||4.5<br>~~a~~<br>~~a~~|UB2-4.5NU-L|UB2-4.5SNU-L|UB2-4.5NE-L|
|||5<br>~~a~~<br>~~a~~|UB2-5NU-L|UB2-5SNU-L|UB2-5NE-L|
|||9<br>~~a~~<br>~~a~~|UB2-9NU-L|UB2-9SNU-L|-|
|||12<br>~~a~~<br>~~a~~|UB2-12NU-L|UB2-12SNU-L|-|
|||24<br>~~a~~<br>~~a~~|UB2-24NU-L|-|-|
|Minimum<br>foot print|Tube|3<br>~~a~~<br>~~a~~|UB2-3NUN|UB2-3SNUN|UB2-3NEN|
|||4.5<br>~~a~~<br>~~a~~|UB2-4.5NUN|UB2-4.5SNUN|UB2-4.5NEN|
|||5<br>~~a~~<br>~~a~~|UB2-5NUN|UB2-5SNUN|UB2-5NEN|
|||9<br>~~a~~<br>~~a~~|UB2-9NUN|UB2-9SNUN|-|
|||12<br>~~a~~<br>~~a~~|UB2-12NUN|UB2-12SNUN|-|
|||24<br>~~a~~<br>~~a~~|UB2-24NUN|-|-|
||Taping|3<br>~~a~~<br>~~a~~|UB2-3NUN-L|UB2-3SNUN-L|UB2-3NEN-L|
|||4.5<br>~~a~~<br>~~a~~|UB2-4.5NUN-L|UB2-4.5SNUN-L|UB2-4.5NEN-L|
|||5<br>~~a~~<br>~~a~~|UB2-5NUN-L|UB2-5SNUN-L|UB2-5NEN-L|
|||9<br>~~a~~<br>~~a~~|UB2-9NUN-L|UB2-9SNUN-L|-|
|||12<br>~~a~~<br>~~a~~|UB-12NUN-L|UB2-12SNUN-L|-|
|||24<br>~~a~~<br>~~a~~|UB2-24NUN-L<br>~~a~~|-|-|



- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

7 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## **PERFORMANCE DATA** 

## COIL TEMPERATURE RISE 

Temperature is measured by coil resistance 

**==> picture [404 x 109] intentionally omitted <==**

**----- Start of picture text -----**<br>
a Coil temperature<br>Coil temperature Rise (°C )  60  eea  Rise (°C)  30 Applied power 0.23W<br>40  re 20<br>a<br>20  aa ae 10 Applied power 0.14W<br>Applied power 0.1W<br> 0  le  0<br> 0   100   200 300  0     5   10  15  20<br>Applied power (mW)  Applied time (minute)<br>**----- End of picture text -----**<br>


## SWITCHING CAPACITY 

This is allowed maximum value. Inquire with EM Devices for maximum value under continuous use. 

## MAXIMUM COIL VOLTAGE 

This is a maximum value of permissible alteration. Inquire with EM Devices under continuous use. 

**==> picture [416 x 125] intentionally omitted <==**

**----- Start of picture text -----**<br>
2.0 DC(Resistive) 200<br> AC(Resistive)<br>i n<br>Contact  1.0 Ratio  of 150<br>current (A)  0.5 Se nominal<br>coil  100<br>ee ee<br>voltage<br>0.2 (%)    50<br>aN<br>el<br>0.1<br> 10   20  50 100 -40  -20   0  20   40    60   80  100<br>250VAC<br>Contact voltage (V) Ambient temperature (°C)<br>220VDC<br>**----- End of picture text -----**<br>


APPLIED VOLTAGE VS. TIMING   (Sample:UA2-5NU) 

**==> picture [398 x 119] intentionally omitted <==**

**----- Start of picture text -----**<br>
(Without coil diode)<br>4  4<br>a a<br>3  3<br>ee es a<br>a a<br>Operate  2  Release  2<br>time  eeaa ee time  a<br>(ms)  1  a (ms)  1<br>a — rs————es ee ee<br>a a<br>0  0<br> 0    100   150 200  250  0    100   200 300  400<br>Applied power (mW) Applied power (mW)<br>**----- End of picture text -----**<br>


8 

- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## OPERATE AND RELEASE VOLTAGE VS.AMBIENT TEMPERATURE 

This shows a typical change of operate (release) voltage. The value of must operate is estimated, so coil voltage mustbe applied more than this value for safety operation. For hot start operation, please inquire with EM Devices . 

**==> picture [448 x 297] intentionally omitted <==**

**----- Start of picture text -----**<br>
100 | f | ft te t yt<br>Must operate voltage<br> 80  Operate voltage (typical)<br>Ratio of nominal  0086 Se ee S one<br> 60  ee<br>coil voltage (%)<br>ee ee ee ee ee eee<br> 40<br>Release voltage (typical)<br>PTTee pee e  epe e ee ETT<br> 20  APTes| ee[ ee| e [| e |ee| eeee| {[ ee| [ | | | f[|||<br>  0    -40      -20      0   20      40      60      80      100<br>Ambient temperature (°C)<br>oO  RUNNING TEST (Non-load)<br>(Load: none, Drive:5VDC，50Hz，50%duty, Ambient temperature :room temperature, Sample:UA2-5NU ,20pieces)<br>10000<br>5<br>Contact  1000  a Operate  4  fe Operate voltage  ET<br>resistance  voltage  3<br>(mΩ)  (V)<br>100  2<br>en | Release  oe |<br>voltage  1  Release voltage<br>(V)<br>10  a 0  Ee CT<br>  0   20     50   100   500    1000    0     20  50    100       500     1000<br>Operations (×104) Operations (×104)<br>**----- End of picture text -----**<br>


## RUNNING TEST (Load) 

**==> picture [441 x 163] intentionally omitted <==**

**----- Start of picture text -----**<br>
oO  RUNNING TEST (Load)<br>(Load: 50VDC 0.1A resistive,Drive:5V.DC,5Hz,50%duty,Ambient temperature:85°C, Sample:UA2-5NU ,10pieces)<br>10000  5<br>4 Operate voltage<br>Contact  1000  e Operate  e 3<br>resistance  voltage<br>2<br>(mΩ)  (V)  Release voltage<br>100  Release  1<br>0<br>ae a a | a<br> 0      2    5     10     50    100<br>10  rt Tt tT TeET<br> 0     2   5     10       50     100  Operations (×104)<br>Operations (×104)<br>**----- End of picture text -----**<br>


**==> picture [5 x 6] intentionally omitted <==**

**----- Start of picture text -----**<br>
9<br>**----- End of picture text -----**<br>


- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## BREAKDOWN VOLTAGE 

**==> picture [90 x 7] intentionally omitted <==**

**----- Start of picture text -----**<br>
Sample: UA2-5NU 10peices<br>**----- End of picture text -----**<br>


**==> picture [352 x 188] intentionally omitted <==**

**----- Start of picture text -----**<br>
(a) Between open contacts (b) Between adjacent contacts<br>100 100<br>Distribution   50   50<br>Distribution (%)<br>  0    0<br>0.5 1.0 1.5 2.0 1.0 1.5 2.0  2.5<br>Breakdown voltage (K V) Breakdown voltage (K V)<br>(C) Between coil and contact<br>100<br>Distribution (%)  50<br>  0<br>1.5 2.0 2.5 2.5over<br>Breakdown voltage (K V)<br>**----- End of picture text -----**<br>


ALTERNATION OF VOLTAGE AT DENSELY MOUNTING (Magnet interference) 

**==> picture [416 x 326] intentionally omitted <==**

**----- Start of picture text -----**<br>
Alternation of operate voltage Alternation of operate voltage<br>+40+30 a +40+30 TTT<br>+20 a +20 eeee<br>+10 a ee +10 a<br>Ratio of  0  a ee Ratio of  0 ee<br>alternation (%)  -10  rn ee en alternation (%) -10 SSeS ST<br>-20  a a -20 i eeel<br>-30  a ee -30 ee<br>a a a<br>-40  -40<br> a      b      c    d    e      f a      b      c    d    e      f<br>Mounting layout Mounting layout<br>Device under test ON OFF<br>ON     ON OFF     OFF<br>3mm 2.5mm<br>ON OFF<br> a       b   c   d 6-6066 6<br>(6660066 6<br>(66006 6<br>ON<br>OFF<br>ON<br>OFF<br>ON<br>—|_| OFF |_|.<br>e   f<br>10<br>**----- End of picture text -----**<br>


- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** ~~NEEM~~ 

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

**==> picture [127 x 9] intentionally omitted <==**

**----- Start of picture text -----**<br>
  TUBE PACKING  (UA2/UB2)<br>**----- End of picture text -----**<br>


**==> picture [412 x 414] intentionally omitted <==**

**----- Start of picture text -----**<br>
15.1   50 pieces / Tube (anti-static)<br>ta ><br>560<br>10.1<br>Rubber stopper (Yellow) Rubber stopper (Green)<br>“Gs Direction of relay direction mark Eee”<br>TAPE PACKING  (UB2)<br>   APPEARANCE         800 pieces / Reel<br>Reel diameter: 380mm<br>Reel<br>Emboss<br>Carrying tape<br>2.7<br>Top cover tape<br>   TAPE DIMENSIONS<br>A<br>2.0 1.75 0.4<br>Φ 1.5  12 4<br>Φ 2.2 A B<br>11.5<br>11.4 UB2-xxNU-L<br>Max.9.4    8.2<br>24.0 UB2-xxNE-L<br>B  UB2-xxNUN-L<br>Max.9.5    6.7<br> UB2-xxNEN-L<br>**----- End of picture text -----**<br>


**==> picture [298 x 106] intentionally omitted <==**

**----- Start of picture text -----**<br>
RELAY DIRECTION AND TAPE CARRYING DIRECTION<br>Sprocket hole<br>Direction mark<br>O<br>Direction of unreeling<br>**----- End of picture text -----**<br>


**==> picture [9 x 6] intentionally omitted <==**

**----- Start of picture text -----**<br>
11<br>**----- End of picture text -----**<br>


- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## **SOLDERING TEMPERATURE CONDITION** 

## **THROUGH-HOLE MOUNTING (UA2)** 

1. Automatic soldering 

Preheating: 110~ 120°C /110 sec. (max.) 

Solder temperature: 260°C max. 

Solder time: 5 seconds max. 

- Note: EM Devices recommends cooling down a printed circuit board less than 

110°C within 40 seconds after soldering. 

2. Manual soldering 

Solder temperature: 350°C max. 

Solder time: 3 seconds max. 

## **SURFACE-MOUNTING TYPE (UB2)** 

IRS Method 

**==> picture [259 x 151] intentionally omitted <==**

**----- Start of picture text -----**<br>
Temperature<br>(℃) max. 240 ℃<br>_<br>220<br>200<br>180<br>45 (max.70)<br>Time (sec.)<br>70 (max.120)<br>190 (max.300)<br>**----- End of picture text -----**<br>


## Note: 

1. Temperature profile shows printed circuit board surface temperature on the relay terminal portion. 

2. Check the actual soldering condition to use other method except above mentioned temperature profiles. 

**==> picture [10 x 6] intentionally omitted <==**

**----- Start of picture text -----**<br>
12<br>**----- End of picture text -----**<br>


- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

## **NOTE ON CORRECT USE** 

## 1. Notes on contact load 

Make sure that the contact load is within the specified range; otherwise, the lifetime of the contacts will be shortened considerably. 

Note that the running performance shown is an example, 

and that it varies depending on parameters such as the type of load, switching frequency, driver circuit, and ambient temperature under the actual operating conditions. Evaluate the performance by using the actual circuit before using the relay. 

## 2. Driving relays 

- If the internal connection diagram of a relay shows + and - symbols on the coil, apply the rated voltage to the relay in the specified direction. If a rippled DC current source is used, abnormalities such as beat at the coil may occur. 

- The maximum voltage that can be applied to the coil of the relay varies depending on the ambient temperature. Generally, the higher the voltage applied to the coil, the shorter the operating time. Note, however, that a high voltage also increases the bounce of the contacts and the contact opening and closing frequency, which may shorten the lifetime of the contacts. 

- If the driving voltage waveform of the relay coil rises and falls gradually, the inherent performance of the relay may not be fully realized. Make sure that the voltage waveform instantaneously rises and falls as a pulse. 

**==> picture [162 x 75] intentionally omitted <==**

**----- Start of picture text -----**<br>
Nominal<br>coil voltage<br>0<br><1msec. <1msec.<br>**----- End of picture text -----**<br>


- For a latching relay, apply a voltage to the coil according to the polarity specified in the internal connection diagram of the relay. 

- If a current is applied to the coil over a long period of time, the coil temperature rises, promoting generation of organic gas inside the relay, which may result in faulty contacts. In this case, use of a latching relay is recommended. 

- The operating time and release time indicate the time required for each contact to close after the voltage has been applied to or removed from the coil. However, because the relay has a mechanical structure, a bounce state exists at the end of the operating and release times. Furthermore, because additional time is required until the contact stabilizes after being in a high-resistance state, care must be taken when using the relay at high speeds. 

3. Operating environment 

- Make sure that the relay mounted in the application set is 

used within the specified temperature range. Use of a relay at a temperature outside this range may adversely affect insulation or contact performance. 

- If the relay is used for a long period of time in highly humid (RH 85% or higher) environment, moisture may be absorbed into the relay. This moisture may react with the NOx and SOx generated by glow discharges that occur when the contacts are opened or closed, producing nitric or sulfuric acid. If this happens, the acid produced may corrode the metallic parts of the relay, causing operational malfunction. 

> - If any material containing silicon (silicon rubber, silicon oil, and silicon based coating material) is used in the neighborhood of relay, there is some possibility that these materials will emit silicon gas that will penetrate the relay. In this case, the switching contact may generate silicon compounds on the surface of contacts. This silicon compound may result in contact failure. Avoid use of relay in such an environment. 

- Because the operating temperature range varies depending on the humidity, use the relay in the temperature range illustrated in the figure below. Prevent the relay from being frozen and avoid the generation of condensation. 

**==> picture [193 x 106] intentionally omitted <==**

**----- Start of picture text -----**<br>
85<br>80 ae eeee ee ee | ee e ee<br>60<br>Humidity<br> (%RH) 40<br>20<br>5<br>-60  -40  -20  0  20  40   60   80  100<br>Temperature (°C )<br>**----- End of picture text -----**<br>


- The relay maintains constant sealability under normal atmospheric pressure (810 to 1,200 hpa). Its sealability may be degraded or the relay may be deformed and malfunction if it is used under barometric conditions exceeding the specified range. 

   - The same applies when the relay is stored or transported. Keep the upper-limit value of the temperature to which the relay is exposed after it is removed from the carton box to within 50°C. 

   - Permanent magnets are used in polarized relays. For this 

   - reason, when magnets, transformers, or speakers are located nearby the relay characteristics may change and faulty operations may result. 

   - If excessive vibration or shock is applied to the relay, it may malfunction and the contacts remain closed. Vibration or shock applied to the relay during operation may cause considerable damage to or wearing of the contacts. Note that operation of a snap switch mounted close to the relay or shock due to the operation of magnetic solenoid may also cause malfunctioning. 

- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

13 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

4. Notes on mounting relays 

- When mounting a relay onto a PC board using an automatic chip mounter, if excessive force is applied to the cover of the relay when the relay is chucked or inserted, the cover may be damaged or the characteristics of the relay degraded. Keep the force applied to the relay to within 1 kg. 

delivery. 

(Storage conditions: 30 °C / 60% RH) After open MBB packing, please use within 3 months. (Storage conditions: 30 °C / 60% RH) 

- Avoid bending the pins to temporarily secure the relay to the PC board. Bending the pins may degrade sealability or adversely affect the internal mechanism. 

- It is recommended to solder the relay onto a PC board under the following conditions: 

<1> Reflow soldering 

Refer to the recommended soldering temperature profile. 

<2> Flow soldering Solder temperature: 260°C max., Time: 5 seconds max. Preheating: 110~ 120°C /110 sec. (max.) 

<3> Manual soldering Solder temperature: 350°C, Time: 2~3 seconds 

- Ventilation immediately after soldering is recommended. Avoid immersing the relay in cleaning solvent immediately after soldering due to the danger of thermal shock being applied to the relay. 

- Use an alcohol-based or water-based cleaning solvent. Never use thinner and benzene because they may damage the relay housing. 

- Do not use ultrasonic cleaning because the vibration energy generated by the ultrasonic waves may cause the contacts to remain closed. 

## 5. Handling 

- Relays are packaged in magazine cases for shipment. If a space is created in the case after some relays have been removed, be sure to insert a stopper to secure the remaining relays in the case. If relays are not well secured, vibration during transportation may cause malfunctioning of the contacts. 

- Exercise care in handling the relay so as to avoid dropping it or allowing it to fall. Do not use a relay that has been dropped. If a relay drops from a workbench to the floor, a shock of 9,800 m/s2 (1,000 G) or more is applied to the relay, possibly damaging its functions. Even if a light shock has been applied to the relay, thoroughly evaluate its operation before using it. 

- Latching relays are factory-set to the reset state for shipment. A latching relay may be set, however, by vibration or shock applied while being transported. Be sure to forcibly reset the relay before using it in the application set. Also note that the relay may be set by unexpected vibration or shock when it is used in a portable set. 

- The sealability of a surface-mount (SMT) relay may be lost if the relay absorbs moisture and is then heated during soldering. When storing relays, therefore, observe the following points: 

<1> For standard packing, please use relays within 12 months after delivery. (Storage conditions: 30 °C / 60% RH) If the relays have moisture absorption, dehumidify as follows. Tape packing: 50±5 °C, 200~300 hours. Simple relay: 85±5 °C, 48 hours. 

<2> For MBB packing, please use relays within 2 years after 

14 

- ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

- ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

0892EMDD03VOL03E 

**UA2/UB2 SERIES** 

No part of this document may be copied or reproduced in any form or by any means without the prior written consent of EM Devices Corporation. EM Devices Corporation assumes no resposibility for any errors which may appear in this document. 

EM Devices Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of EM Devices Corporation or others. 

While EM Devices Corporation has been making continuous effort to enhance the reliability of its electronic components, the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or property arising from a defect in an EM Devices electronic component, customers must incorporate sufficient safety measures in its design, such as redundancy, fire-containment, and anti-failure features. EM Devices' products are classified into the following three quality grades: 

"Standard," "Special, "and "Specific". The Specific quality grade applies only to devices developed based on a customer designated "quality assurance program" for a specific application. The recommended applications of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device before using it in a particular application. 

Standard: Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots Special:   Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical  equipment (not specifically designed for life support) Specific:  Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. 

The quality grade of EM Devices' products are "Standard" unless otherwise specified in EM Devices' Data Sheets or Data Books. If customers intend to use EM Devices' products for applications other than those specified for Standard quality grade, they should contact an EM Devices sales representative in advance. 

## (Note) 

- (1) "EM Devices" as used in this statement means EM Devices Corporation and also includes its majorityowned subsidiaries. 

- (2) "EM Devices electronic component products" means any electronic component product developed or manufactured by or for EM Devices (as defined above). 

> ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact EM Devices for updated product data. 

- ●Please request for a specification sheet for detailed product data prior to the purchase. 

> ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 

15 

0892EMDD03VOL03E