NEC-UB2-4-5

NEC’s UA2/UB2 relay is a new generation slim package Miniature Signal Relay for use in  

high density applications.  

FEATURES  

Small mounting size for high density applications  

Bellcore (2500 V surge coil to contacts) and FCC (1500 V) surge capability.  

IEC950/UL1950/EN60950 spacing and high breakdown voltage. (Basic insulation class on 200 V  

working voltage)  

Low power consumption 140 mW  

APPL

I

CATIONS  

Electronic switching systems, PBX, terminal equipment, telephone system, test equipment.  

PERFORMANCE CHARACTERIS

 

TICS (

 

Co m m u n it y )  

Contact Form  

2 Form c  

Contact Ratings  

Maximum Switching  

Power  

Maximum Switching  

Voltage  

Maximum Switching  

Current  

30 W (resistive)  

110 Vdc  

1 A  

37.5 VA (resistive)  

125 Vac  

Maximum Carrying  

Current  

1 A  

Minimum Contact Ratings  

* 4  

10 mV.dc, 10 µA  

Initial Contact Resistance  

Contact Material  

Nominal Operating Power Non-Latch Type  

70 mOhm typ. (Initial)  

Silver alloy with gold alloy overlay  

140mW (230 mW fro 24V)  

Single Coil Latch Type

 

100 to 140 mW  

Operate Time (Excluding Bounce)  

Release Time (Excluding Bounce)  

Insulation Resistance  

Approximately 2 ms  

Approximately 1 ms without diode  

1000 MOhm at 500 Vdc  

Breakdown Voltage  

Between Open Contacts  

Between Adjacent  

Contacts  

*

1000 Vac for one minute (1500 V surge, 10 x 160 µs  

)

1

Between Coil and  

Contact  

* 2  

1500 Vac for one minute (2500 V surge, 2 x 10 µs  

)

Shock Resistance  

2

735 m / s

 

(75 G) (misoperating)  

2

980 m / s

 

(100 G) (destructive failure)  

Vibration Resistance  

10 to 55 Hz at double amplitude of 3 mm (20 G)  

(misoperating)  

10 to 55 Hz, double amplitude of 5 mm (30 G)  

(Destructive failure)  

Ambient Temperature  

Coil Temperature Rise  

Running specifications  

–40 to +85°C  

18 degrees at nominal coil voltage (140 mW)  

No-load  

Load  

7 * 3  

5 x 10  

operations (Non-latch type)  

7

1 x 10

 

operations (Latch type)  

6

50 Vdc 0.1 A (resistive), 1 x 10

 

operations at 85°C  

6

10 Vdc 10 mA (resistive), 1 x 10

 

operations at 85°C  

Weight  

Approximately 1 gram  

*1 rise time :10 µs, fall time : 160 µs  

*2 rise time :2 µs, fall time : 10 µs  

*3 Number of operations without mechanical failure. Note, the number of operations under which steady  

7

electrical characteristics are maintained is 1 x 10

 

operations  

*4 This value is a reference value based upon a resistive load. Minimum contact ratings change based upon  

switching frequency / drive characteristics, ambient temperature and load.  

DIMENS IONS  

mm  

UA2  

UA2-NJ  

UB2  

UB2-N  

RECOMMENDED PAD LAYOUT  

(bottom view) mm  

UA2  

UA2-NJ  

UB2  

UB2-N  

SCHE

M

A

T

I

CS  

(bottom view)  

UA2  

UA2-NJ  

UB2  

UB2-N  

PART NUMBER S

 

YS TEM  

UA2-3 SNU  

Series  

UA2 : Through-hole  

UB2 : Surface Mount  

Nominal coil voltage (See Nominal Lineup)  

Latch type  

Nil : Non-latch type  

S : Single coil latch type  

NU:  

Standard type (NJ: trimmed lead type UA2 )(NUN: Minimum footprint UB2)  

NO

M

INAL LINEUP  

Non-latch Type  

at 20°C  

Nominal  

Coil  

Must Operate

 

Must Release  

Nominal  

operate power  

(mW)  

Coil Voltage  

Resistance  

Voltage  

(Vdc)  

Voltage  

(Vdc)  

(Vdc)  

1.5  

3

(Ohm) ±10%  

16  

1.13  

2.25  

3.38  

3.75  

4.5  

0.15  

0.3  

0.45  

0.5  

0.6  

0.9  

1.2  

2.4  

140  

140  

140  

140  

140  

140  

140  

230  

64.3  

145  

4.5  

5

178  

6

257  

9

579  

6.75  

9.0  

12  

24  

1028  

2504  

18.0  

Single-Coil Latch Type  

at 20°C  

Nominal  

Coil Voltage  

(Vdc)  

Coil  

Must Operate

 

Must Release  

Nominal  

operate power  

(mW)  

Resistance  

Voltage  

(Vdc)  

Voltage  

(Vdc)  

(Ohm) ±10%  

1.5  

3

22.5  

90  

1.13  

2.25  

3.38  

3.75  

4.5  

1.2  

2.4  

3.6  

4

100  

100  

100  

100  

100  

100  

100  

120  

4.5  

5

202.5  

250  

6

360  

4.8  

7.2  

9.6  

19.2  

9

810  

6.75  

9.0  

12  

24  

1440  

4800  

18.0  

SAFETY STANDARD AND RAT

I

NG  

UL Recognized  

(UL508)*  

File No. E73266  

CSA Certified  

(CSA C22.2 No. 14)  

File No. LR46266  

30 Vdc, 2A (Resistive)  

110 Vdc, 0.6 A (Resistive)  

125 Vac, 0.5 A (Resistive)  

* Spacing: UL114, UL478  

World Products Inc.  

19654 8th St. East, Sonoma, CA 95476 USA  

Phone: (707) 996-5201 Fax: (707) 996-3380  

E-mail: emdsales@worldproducts.com  

© 1999 World Products Inc. All rights reserved.