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© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com

R7004_UA2_UB2 • 2/27/2014

Miniature Signal Relays – UA2/UB2 Series

Coil Specifications cont’d

Nominal Coil Voltage

(VDC)

Coil Resistance

(Ω) ±10%

(VDC)

(VDC)

Nominal Operating

Power (mW)

3

90

2.25

2.25

100

4.5

202.5

3.38

3.38

100

5

250

3.75

3.75

100

12

1440

9.0

9.0

100

1

Test by pulse voltage.

2

Latchtyperelaysshouldbeinitializedtoaknownpositionbeforeusing.Onlythespecifiedpolarityshouldbeusedtoenergizethecoil.

Non-latch, Low Power Consumption (NE, NEN) Type (@ 20°C)

Nominal Coil Voltage

(VDC)

Coil Resistance

(Ω) ±10%

(VDC)

(VDC)

Nominal Operating

Power (mW)

3

90

2.25

0.3

100

4.5

202.5

3.38

0.45

100

5

250

3.75

0.5

100

1

Test by pulse voltage.

Recommended Relay Drive Conditions

Coil Type

Rating

Ambient Temperature

Non-latch

Voltage:≤±5%ofnominalvoltage

-40 to +85°C

Single Coil

Square pulse (rise and fall time is rapid)

Pulseheight:≤±5%ofnominalvoltage

Pulse Width: > 10 ms

Marking

Top view

UB2-4.5NU

JAPAN

0501F

UB2-4.5NU

JAPAN

0501F

Part number

Date code

Country of origin

Manufacturer

Direction mark

(pin No. 1 and 8)