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International Rectifier Electronic Components Datasheet

NAS-521 Datasheet

AS Series / Wirewound Resistor

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NAS-521 pdf
SEMI-PRECISION POWER
WIREWOUND RESISTOR
ISO-9001
Registered
AS SERIES
Alloy resistance wire wound
to specific parameters
including TCR's from ±20 to
+5500 ppm/°C
Alpha - Digital
Marking
All welded cap
and lead
assembly
Silicone conformal
coating
1/4 watt to 10 watts
±5%, ±3%, ±1%, ±.5% tolerance
Heat conducting
ceramic substrate
0.1 ohm to 175K ohms
Resistance wire TCR ±20 ppm/°C
omSPECIFICATIONS:
Power Rating 275°C
.cEquivalent
MIL-R-26
Max. Hot Spot (watts)
IRC Type Style
125°C
25°C
AS-1/4
RW81
0.5
1
UAS-1/2
0.5 1
t4AS-1
AS-1C
RW70U
1
1
2
2
eAS-2
RW-69V/
RW79U
2
3
AS-2B
eAS-2C
hAS-3
SAS-5
RW74U/
RW67V
3
2
3
5
4
3
5
7
AS-7
taAS-10
RW68V/
RW78U
7
10
9
14
Commercial Range
(ohms)
Min.
0.1
0.1
0.1
.05
0.1
Max.
1.0K
6.0K
7.5K
2K
20K
0.1 24K
0.1 18K
0.1 30K
0.1 60K
0.1 90K
0.1 175K
Non-Inductive Range
(ohms)
Min.
*
*
0.1
*
0.5
Max.
*
*
3.8K
*
10K
Available Resistance
(ohms)
0.5%, 1%
1-1K
1-6K
1-7.5K
1-2K
1-20K
3%, 5%
0.1-1K
0.1-6K
0.1-7.5K
.05-2K
0.1-20K
0.5
12K
1-24K
0.1-24K
0.2
7.5K
1-18K
0.1-18K
0.5
15K
1-30K
0.1-30K
0.8
30K
1-60K
0.1-60K
1.0
45K
1-90K
0.1-90K
3.0 50K 1-175K 0.1-175K
aInductance 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.
.DDIMENSIONS (Inches and (mm)):
Please note lead length
dimension change on the
following two items only:
AS-2B 1.3 min
wAS-2C 1.3 min
1.50 min.
(38.1)
B
A
D
C
* Typical inductance of AS-1C <5 ohms is < 1µH.
Lower values available upon request.
NOTE:
Coating and marking is resistant to normal freon degreasing.
Consult factory for special requirements.
AS marking available in Alpha Numeric or Colorbanding -
identification available.
wwIRC Type
A±0.032
B (max)
C (max)
D (Lead Diameter)
AS-1/4
0.250 (6.4)
0.094 (2.4)
0.312 (7.9)
0.020 (0.5)
AS-1/2
0.312 (7.9)
0.094 (2.4)
0.375 (9.5)
0.020 (0.5)
AS-1
0.367 (9.3)
0.125 (3.2)
0.429 (10.9)
0.020 (0.5) 0.025 (0.64)
AS-1C
0.256 (6.5)
0.115 (2.9)
0.303 (7.7)
0.025 (0.64) 0.032 (0.8)
AS-2
0.480 (12.2)
0.250 (6.3)
0.600 (15.2)
0.032 (0.8)
AS-2B
0.540 (13.7)
0.219 (5.6)
0.663 (16.6)
0.032 (0.8)
AS-2C
0.489 (11.0)
0.157 (4.0)
0.594 (15.1)
0.032 (0.8)
AS-3
0.687 (17.5)
0.282 (7.2)
0.812 (20.6)
0.040 (1.0)
AS-5
0.875 (22.2)
0.344 (8.8)
0.980 (24.9)
0.040 (1.0)
AS-7
1.250 (31.8)
0.344 (8.8)
1.375 (35.0)
0.040 (1.0)
AS-10
1.812 (46.0)
0.385 (9.8)
1.937 (49.2)
0.040 (1.0)
*Leads 60/40 are solder plated. AS-1C leads are copper. All others are 40% conductivity copper sheathed steel.
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
1


International Rectifier Electronic Components Datasheet

NAS-521 Datasheet

AS Series / Wirewound Resistor

No Preview Available !

NAS-521 pdf
POWER DERATING:
200
175
AS-1/4, 1/2, 1
AS-3
150
125
AS-5, 10
AS-2A, 2C
AS-2
100
AASS-7-7, ,2B25
75
0
25 75 125 175 225
Ambient Temperature (°C)
275
TEMPERATURE RISE @ 125°C:
275
AS-7, 10
250
AS-3, AASS--55
AASS-23A, ,2AAS, 22CC
AS-2
AS-2B
200
AS-1/2
AS-1/4
150
12500
240 4800 16200 18600
Percent of 125°C Power Rating
12000
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%
ISO-9001
Registered
TEMPERATURE RISE @ 25°C:
275
250
AS-7, 10
AS-3,AS-5
ASA-1S, A-2S-2
200
AS-2A, 2C
ASA-2SB-2B
150
AS-1/2
100
50
25
0
AS-1/4
40 80 120 160
Percent of 25°C Power Rating
200
SELECTED PULSE-HANDLING
CAPABILITY @ 125°C:
14
12
AS-2
10
AS-3
AS-2A
8
6
4
2 AS-1/2
AS-1/4
00.1 0.2
AS-2B
AS-1
AS-2C
0.5 1
2
Resistance (ohms)
5
10
HOW TO ORDER:
Sample Part No.:
Type
Power
3 =3 watts
(See specification chart
for other power ratings)
Resistance Value
Expressed in ohms
(Standard EIA/MIL Values)
Tolerance
±5%, ±3%, ±1%, ±0.5%
AS-3 27R0 0.25%
2 WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com


Part Number NAS-521
Description AS Series / Wirewound Resistor
Maker International Resistive
Total Page 2 Pages
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