• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Wire and Film Technologies Division

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

Semi-Precision Power

Wirewound Resistor

Sample Part No.

IRC Type

AS

Power

3 = 3 watts

(See specification chart for other power ratings)

Resistance Value

(100 ohms and greater - First 3 significant digits plus 4th digit multiplier)

Example: 100 ohms = 1000, 1000 ohms = 1001, 150,000 ohms = 1503

(Less than 100 ohms - "R" is used to designate decimal)

Example: 51 ohms = 51R0, 1 ohm = 1R00, 0.25 ohms = R250

Tolerance

J = ±5%; H = ±3%; F = ±1%; D = ±0.5%

Lead Free Construction

Ordering Data

AS - 3

27R0

F

LF

AS Series Issue August 2008 Sheet 3 of 3

Test Condition

Max

∆R

Load Life 1000 hours

1.0%

Moisture Resistance

1.0%

Temperature Cycle

0.5%

Short Time Overload

0.5%

Low Temperature Operation

0.5%

Solder Heat

0.25%

Shock

0.5%

Vibration

0.5%

Environmental Testing at 25°C

Power Derating Curve

Selected Pulse-Handling

Capability @ 125°C

Ambient Temperature (°C)

25

75

125

175

225

275

200

175

150

125

100

75

0

AS- 1/4, 1/2, 1, 1C

AS- 3, 2

AS- 2C

AS- 5, 10

AS- 7

AS- 2B

Resistance (ohms)

0.1

0.2

0.5

1

2

5

10

14

12

10

8

6

4

2

0

AS- 2A

AS- 3

AS- 2

AS- 2B

AS- 2C

AS- 1

AS- 1/2

AS- 1/4