Semi-Precision Power
Wirewound Resistor
Environmental Testing at 25°C
Test Condition
Load Life 1000 hours
Moisture Resistance
Temperature Cycle
Short Time Overload
Low Temperature Operation
Solder Heat
Shock
Vibration
Max
∆R
1.0%
1.0%
0.5%
0.5%
0.5%
0.25%
0.5%
0.5%
Power Derating Curve
Percent of 125°C Power Rating
200
175
150
125
AS- 2B
AS- 1/4, 1/2, 1, 1C
AS- 3, 2
AS- 2C
AS- 5, 10
100
75
0
25
75
AS- 7
125
175
225
275
Ambient Temperature (°C)
Selected Pulse-Handling
Capability @ 125°C
14
Energy (watts-second)
12
10
8
AS- 2B
Ordering Data
Sample Part No.
IRC Type
AS
AS - 3
27R0
F
LF
AS- 2A
AS- 2
Power
AS- 3
3 = 3 watts
(See specification chart for other power ratings)
Resistance Value
6
AS- 2C
(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
4
AS- 1
Tolerance
J = ±5%; H = ±3%; F = ±1%; D = ±0.5%
2
0
0.1
AS- 1/2
AS- 1/4
Lead Free Construction
0.2
0.5
1
2
5
10
Resistance (ohms)
Wire and Film Technologies Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
AS Series Issue August 2008 Sheet 3 of 3
IRCTT [ IRC - A TT ELECTRONICS COMPANY. ]
