Semi-Precision Power
Wirewound Resistor
AS Series
•
1/4 watt to 10 watts
•
0.1 ohm to 175K ohms
•
±5%, ±3%, ±1%, ±.5% tolerance
•
Resistance wire TCR ±20 ppm/°C
•
RoHS-compliant version available
Alloy resistance wirewound
to specific parameters
including TCR’s from
All welded
cap and lead
Alpha-
Digital
Marking
Silicone
conformal coating
Heat conducting
ceramic
Electrical Data
IRC Type
Similar
MIL-R-26
Style
Power Rating 275°C
Max. Hot Spot
125°C
0.5
0.5
RW70U
1
1
RW79U
2
3
2
3
RW74U/
5
7
RW78U
10
25°C
1
1
2
2
3
4
3
5
7
9
14
Commercial Range
(ohms)
Min.
0.1
0.1
0.1
.05
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Max.
1.0K
6.0K
7.5K
2K
20K
24K
18K
30K
60K
90K
175K
Non-Inductive
Range
(ohms)
Min.
*
*
0.1
*
0.5
0.5
0.2
0.5
0.8
1.0
3.0
Max.
*
*
3.8K
*
10K
12K
7.5K
15K
30K
45K
50K
Available Resistance
(ohms)
0.5%, 1%
1-1K
1-6K
1-7.5K
1-2K
1-20K
1-24K
1-18K
1-30K
1-60K
1-90K
1-175K
3%, 5%
0.1-1K
0.1-6K
0.1-7.5K
.05-2K
0.1-20K
0.1-24K
0.1-18K
0.1-30K
0.1-60K
0.1-90K
0.1-175K
AS-1/4
AS-1/2
AS-1
AS-1C
AS-2
AS-2B
AS-2C
AS-3
AS-5
AS-7
AS-10
RW81
Inductance of AS-1/2 is less than 1µH at 1MHz.
To order non-inductive types, add the prefix "N". Example: NAS-1, NAS-2C, etc.
*Typical inductance of AS-1C <5 ohms is <1µH.
Lower values available upon request.
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
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
A subsidiary of
TT electronics plc
AS Series Issue August 2008 Sheet 1 of 3
IRCTT [ IRC - A TT ELECTRONICS COMPANY. ]
