SM/SMH Series
Surface Mount Wirewound Resistor
Features:
•
•
•
•
•
High temperature molded encapsulation
Flex termination for absorbing thermal expansion
All welded construction
Non-inductive types available as NSM
RoHS compliant / lead-free
Stackpole Electronics, Inc.
Resistive Product Solutions
Electrical Specifications
Type / Code
SM2615
SM4124
SM4527
SMH4527
SM6227
SM8035
Power Rating
(Watts) @ 70ºC
1W
2W
2W
3W
3W
4W
Maximum
Working
Voltage
25V
50V
60V
60V
100V
100V
Dielectric
Withstanding
Voltage
>500V
>500V
>500V
>500V
>500V
>500V
Resistance Temperature
Coefficient
±100 ppm/ºC
± 20 ppm/ºC
±100 ppm/ºC
± 20 ppm/ºC
±75 ppm/ºC
±75 ppm/ºC
±100 ppm/ºC
± 20 ppm/ºC
±100 ppm/ºC
± 20 ppm/ºC
Ohmic Range (Ω) and Tolerance
0.1%, 0.5%, 1%, 5%
0.01 - 10(1)
10.2 - 1K
0.01 - 10(1)
10.2 - 2K
0.01 - 0.06(1)
0.01 - 0.06(1)
0.01 - 10(1)
10.2 - 3.01K
0.01 - 10(1)
10.2 - 5K
(1) Zero ohm available on all sizes
Mechanical Specifications
Type / Code
SM2615
SM4124
SM4527
SMH4527
SM6227
SM8035
A
Body
Length
0.26 ± 0.015
6.6 ± 0.4
0.41 ± 0.015
10.4 ± 0.4
0.455 ± 0.015
11.6 ± 0.4
0.455 ± 0.015
11.6 ± 0.4
0.625 ± 0.015
15.9 ± 0.4
0.8 ± 0.015
20.3 ± 0.4
B
Total
Length
0.28 ± 0.032
7.1 ± 0.81
0.43 ± 0.032
10.9 ± 0.81
0.475 ± 0.032
12.1 ± 0.81
0.475 ± 0.032
12.1 ± 0.81
0.645 ± 0.032
16.4 ± 0.81
0.825 ± 0.032
21.0 ± 0.81
C
Body
Height
0.14 ± 0.015
3.6 ± 0.4
0.18 ± 0.015
4.6 ± 0.4
0.15 ± 0.015
3.8 ± 0.4
0.15 ± 0.015
3.8 ± 0.4
0.25 ± 0.015
6.4 ± 0.4
0.362 ± 0.015
9.2 ± 0.4
D
Body
Width
0.15 ± 0.015
3.8 ± 0.4
0.24 ± 0.015
6.1 ± 0.4
0.27 ± 0.015
6.9 ± 0.4
0.27 ± 0.015
6.9 ± 0.4
0.275 ± 0.015
7.0 ± 0.4
0.35 ± 0.015
8.9 ± 0.4
E
Termination
Width
0.1 ± 0.015
2.5 ± 0.4
0.122 ± 0.015
3.1 ± 0.4
0.122 ± 0.015
3.1 ± 0.4
0.122 ± 0.015
3.1 ± 0.4
0.122 ± 0.015
3.1 ± 0.4
0.24 ± 0.015
6.1 ± 0.4
F
Termination
Length
0.09 ± 0.015
2.3 ± 0.4
0.09 ± 0.015
2.3 ± 0.4
0.105 ± 0.015
2.7 ± 0.4
0.105 ± 0.015
2.7 ± 0.4
0.13 ± 0.015
3.3 ± 0.4
0.123 ± 0.015
3.1 ± 0.4
W
0.138
3.5
0.181
4.6
0.169
4.3
0.169
4.3
0.236
6.2
0.34
8.6
H
0.13
3.3
0.157
4.0
0.157
4.0
0.157
4.0
0.165
4.2
0.19
4.8
L
0.35
8.9
0.583
14.8
0.587
14.9
0.587
14.9
0.85
21.6
0.95
24.1
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Rev Date: 05/12/2011
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
1
www.seielect.com
marketing@seielect.com
SM/SMH Series
Surface Mount Wirewound Resistor
Power Derating Curve:
Percent Rated Power (%)
100
75
50
25
Stackpole Electronics, Inc.
Resistive Product Solutions
0
25
50
70
100
150
200
250
275
300
Ambient Temperature (ºC)
Performance Characteristics
Test
Moisture Resistance
Thermal Shock
Load Life @ 70ºC - 1,000 hrs.
Resistance to Soldering Heat
Terminal Strength
Dielectric Withstanding Voltage
Short Time Overload
Operating Temperature Range: -55ºC to +275ºC
Results
±1%
±0.5%
±1%
±1
±0.5%
±0.001% / V
±0.2%
How to Order
1
2
3
4
5
6
7
8
9
10
11
12
S
M
4
1
2
4
F
T
1
K
0
0
Product Series
Standard
SM
High Power
SMH
NSM Non-inductive
Size
2615
4124
4527
(H)4527
6227
8035
Power
1W
2W
2W
3W
3W
4W
Tolerance
Code
Tol
B
0.1%
D
0.5%
F
1%
J
5%
Z Jumper
Code
T
Packaging
Description
Size
2615
4124
13" reel
4527, H4527
plastic tape
6227
8035
Quantity
1,500
800
1,200
750
350
Legacy Part Number (before January 3, 2011):
SEI Type
Code
Nominal
Resistance
Tolerance
Resistance Value
Four characters with the
multiplier used as the
decimal holder.
-
"L" used as multiplier of 10
3
for any value
under
0.1 ohm.
0.01 ohm = 10L0
10 Kohm = 10K0
Zero ohm jumper = 0R00
Packaging
SM
Type
SM
SMH
NSM
2
Code
1
2
2A
(H)3A
3
4
1K
Size
2615
4124
4527
4527
6227
8035
1%
Tolerance
0.1%
0.5%
1%
5%
R
Types
SM 1
SM 2
SM 2A, 3A
SM 3
SM4
Description
Standard
High Power
Non-inductive
Qty
1,500
800
1,200
750
350
Description
13" reel
plastic tape
Code
R
Rev Date: 05/12/2011
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
www.seielect.com
marketing@seielect.com
