SM Series
Stackpole Electronics, Inc.
Surface Mount Wirewound Resistors
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Features:
Resistive Product Solutions
High temperature molded encapsulation
Flex termination for absorbing thermal expansion
All welded construction
Non-inductive types available as NSM
RoHS compliant / lead-free
Electrical Specifications
Power Rating
(Watts) @ 70ºC
Maximum
Working
Voltage
Dielectric
Withstanding
Voltage
Resistance Temperature
Coefficient
SM 1
1W
25V
>500V
±100 ppm/ºC ± 20 ppm/ºC
0.01 - 10(1)
10.2 - 1K
SM 2
2W
50V
>500V
±100 ppm/ºC ± 20 ppm/ºC
0.01 - 10(1)
10.2 - 2K
SM 2A
2W
60V
>500V
±75 ppm/ºC
0.01 - 0.06(1)
SM 3A
3W
60V
>500V
±75 ppm/ºC
0.01 - 0.06(1)
SM 3
3W
100V
>500V
±100 ppm/ºC ± 20 ppm/ºC
0.01 - 10(1)
10.2 - 3.01K
SM 4
4W
100V
>500V
±100 ppm/ºC ± 20 ppm/ºC
0.01 - 10(1)
10.2 - 5K
Type / Code
Ohmic Range(Ω) and Tolerance
0.1%, 0.5%, 1%, 5%
(1) Zero ohm available on all sizes
Power Derating Curve
Percent Rated Power (%)
Power Derating Curve:
100
75
50
25
0
25
50
70
100
150
200
250
275
300
Ambient Temperature (ºC)
How to Order
SEI Type
Nominal
Resistance
Tolerance
Packaging
SM
Type
SM
NSM
Code
2
1K
1%
R
Description
Standard
Non-inductive
Code
1
2
2A
3A
3
4
Size
2815
4324
4827
4827
6528
8035
Rev Date: 02/02/2010
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
Tolerance
0.1%
0.5%
1%
5%
77
Types
SM 1
SM 2
SM 2A
SM 3, 3A
SM4
Qty
1,500
800
1,200
750
350
Description
Code
13" Reel
R
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