mi-Precision Power
Semi-Precision Power
ewound Resistor
Wirewound Resistor
Semi-Precision Power
S SeriesWirewound Resistor
· 1/4 watt to 10 watts
AS / NAS Series
Alloy resistance wirewound
to specific parameters
including TCR’s from
to 10 watts
· 0.1 ohm to 175K ohms
to 175K ohms ±3%, ±1%, ±.5% tolerance
· ±5%,
AlphaDigital
Marking
All welded
Alloy resistance wirewound
cap and lead
· / NAS Series
%, ±1%, ASResistance wire TCR ±20 ppm/°C
±.5% tolerance
to specific parameters
including TCR’s from
· 0.1 ohm ppm/°C
RoHS-compliant
nce wire TCR ±20to 175K ohms version available
•
• 1/4 watt to 10 watts
AlphaSilicone
Digital
Marking
conformal
All welded
cap and lead
• ±5%, ±3%, ±1%, ±.5%
ompliant version available tolerance
• Resistance wire TCR ±20 ppm/°C
coating
Silicone
Heat conducting
conformal coating
ceramic
• RoHS-compliant version available
Heat conducting
ceramic
ical Data Data
Electrical
pe
4
2
C
B
C
0
Power Rating
Power Rating 275°C 275°C /AS / Commercial
AS Commercial
Similar
Max. Hot Spot
Range (ohms)
Similar
Max. Hot Spot
Range (ohms)
IRC Type
MIL-R-26
MIL-R-26
Style
125°C
25°C
Min.
Max.
Style
125°C
25°C
Min.
Max.
AS-1/4
NAS-1/4
AS-1/2
RW81
NAS-1/2
AS-1
NAS-1
AS-1C
NAS-1C
RW70U
AS-2
NAS-2
AS-2B
NAS-2B
AS-2C
NAS-2C
RW79U
AS-3
NAS-3
AS-5
NAS-5
AS-7
NAS-7
AS-10
NAS-10
RW74U
RW81
0.25
RW70U
0.5
0.25
0.5
1
1
1
1
1
2
3
2
RW78U
3
2
2
2
2
3
2
3
3
0.1
4
3
7
10
5
7
9
14
60
1-1K
0.1-1K
60
601-6K
0.1-6K
1-1K
0.1-1
3.8K
1-7.5K
60
0.1-7.5K
0.1-6
0.2
0.1
1.0K
6.0K
0.5
0.1
7.5K
6.0K
0.2
2K
10
7.5K
0.2
0.5
1K
0.2
.05
0.1
20K
0.25
0.1
2K
24K
0.1
18K
0.2
7.5K
30K
0.1
15K
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
20K
24K
60K
1-6K
10
0.1
1-7.5K
12K
1K
1-24K
1-2K
0.1-24K
1-18K
0.1-18K
1-30K
0.1-7.
0.1-20K
0.1-30K
30K
0.2 0.2
45K
175K
0.2
50K
0.1
3%, 5
.05-2K
1-20K
90K
18K
30K
1-2K
3%, 5%
0.5%, 1%
10K
0.25
0.1
0.5%, 1%
Max.
3.8K
0.1
5
5
Max.
Min.
1.0K
0.1
4
Range (ohms)
.05
0.1
3
3
RW74U
1
Resistan
(ohms)
Min.
0.1
2
1
RW79U
1
NAS / Non-Inductive
Available Available
NAS / Non-Inductive Resistance
Range (ohms)
(ohms)
10K
12K
1-20K
.05-2
0.1-20
1-60K
0.1-60K
1-24K
0.1-24
1-90K
7.5K
0.1-90K
1-18K
0.1-18
1-175K
0.1-175K
15K
1-30K
0.1-30
7
0.1
60K
0.1
30K
1-60K
0.1-60
7
RW78U
General Note
5
9
0.1
90K
0.2
45K
1-90K
0.1-90
10
14
0.1
175K
0.2
50K
1-175K
0.1-17
IRC reserves the right to make changes in product specification without notice or liability.
General Note
All information is subject to IRC’s own data and is considered accurate at time of going to print.
TT electronics reserves the right to make changes in product specification without notice or liability.
All information Technologies Division own South Staples considered Christi Texas time of
Wire and Filmis subject to TT electronics’ • 4222 data and is Street • Corpusaccurate at78411 USAgoing to print.
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
A subsidiary of
TT electronics plc
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
AS / NAS Series Issue February 2010 Sheet 1 of 3
© TT electronics plc
01. 12