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台達電子工業股份有限公司

台達電子工業股份有限公司

台達電子工業股份有限公司

台達電子工業股份有限公司

Delta Electronics, Inc.

DOCUMENT

NO.

SR340000NH

PAGE

REV.

A0

THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc.

AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION

UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕

X

= ±

X.X

= ±

X.XX

= ±

ANGLES ±

HOLE DIA. ±

SCALE :

UNIT :

The Engineering Spec. For 1/2W 1220

Low Resistance Chip Resistor

4. Ratings

4-1 Specification

Power Rating*

1/2 W

Resistance Range

0.010

Ω ~ 1Ω

Resistance Tolerance

±1% , ±2% , ±5%

Temperature Coefficient of Resistance

0~250ppm/℃

Note*:

Power Rating is based on continuous full load operation at rated ambient temperature of 70℃.

For resistors operated at ambient temperature in excess of 70℃, the maximum load shall be

derated in accordance with the following curve.

Figure 2

Derating Curve

4-2 Rated Voltage

The rated voltage shall be determined by the following expression.

R

P

V

×

=

Where V：Rated voltage (V)

R：Nominal resistance value (

Ω)

P：Rated dissipation (W)

4-3 Operating and Storage Temperature Range

-55 to +125℃

-55

0

70

125

℃

100

50

%

Percentage of the

rated dissipation

Ambient temperature