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
Power Rating
(Watts)
Type / Code
@ 70ºC
SM2615
SM4124
1W
2W
Maximum
Working
Voltage
25V
50V
Dielectric
Withstanding
Voltage
>500V
>500V
Resistance
Temperature
Coefficient
±100 ppm/ºC
± 20 ppm/ºC
±100 ppm/ºC
± 20 ppm/ºC
±75 ppm/ºC
±100 ppm/ºC
±20 ppm/ºC
±75 ppm/ºC
±100 ppm/ºC
± 20 ppm/ºC
±100 ppm/ºC
± 20 ppm/ºC
Ohmic Range (Ω) and Tolerance
0.1%
1 - 10
10.2 - 1K
1 - 10
10.2 - 2K
0.5%
1 - 10
10.2 - 1K
0.5 - 10
10.2 - 2K
0.01 - 0.06
1%
0.01 - 10
10.2 - 1K
0.01 - 10
10.2 - 2K
0.01 - 0.06
0.1 - 10
10.2 - 2K
0.01 - 0.06
0.01 - 10
10.2 - 3.01K
0.1 - 9.76
10 - 2K
5%
0.01 - 10
10.2 - 1K
0.01 - 10
10.2 - 2K
0.01 - 0.06
0.1 - 10
10.2 - 2K
0.01 - 0.06
0.01 - 10
10.2 - 3K
0.1 - 9.76
10 - 2K
SM4527
SMH4527
SM6227
SM8035
2W
3W
3W
4W
60V
60V
100V
100V
>500V
>500V
>500V
>500V
-
-
0.5 - 10
10.2 - 3K
-
0.1 - 10
10.2 - 2K
0.01 - 0.06
0.2 - 10
10.2 - 3K
-
Zero ohm available on all sizes
Mechanical Specifications
Type / Code
A
Body
Length
0.260 ± 0.015
6.60 ± 0.38
0.410 ± 0.015
10.41 ± 0.38
0.455 ± 0.015
11.56 ± 0.38
0.455 ± 0.015
11.56 ± 0.38
0.455 ± 0.015
11.56 ± 0.38
0.625 ± 0.015
15.88 ± 0.38
0.800 ± 0.015
20.32 ± 0.38
B
Total
Length
0.280 ± 0.032
7.11 ± 0.81
0.430 ± 0.032
10.92 ± 0.81
0.475 ± 0.032
12.07 ± 0.81
0.475 ± 0.032
12.07 ± 0.81
0.475 ± 0.032
12.07 ± 0.81
0.645 ± 0.032
16.38 ± 0.81
0.825 ± 0.032
20.96 ± 0.81
C
Body
Height
0.140 ± 0.015
3.56 ± 0.38
0.180 ± 0.015
4.57 ± 0.38
0.150 ± 0.015
3.81 ± 0.38
0.180 ± 0.015
4.57 ± 0.38
0.150 ± 0.015
3.81 ± 0.38
0.250 ± 0.015
6.35 ± 0.38
0.362 ± 0.015
9.19 ± 0.38
D
Body
Width
0.150 ± 0.015
3.81 ± 0.38
0.240 ± 0.015
6.10 ± 0.38
0.270 ± 0.015
6.86 ± 0.38
0.270 ± 0.015
6.86 ± 0.38
0.270 ± 0.015
6.86 ± 0.38
0.275 ± 0.015
6.99 ± 0.38
0.350 ± 0.015
8.89 ± 0.38
E
Termination
Width
0.100 ± 0.015
2.54 ± 0.38
0.122 ± 0.015
3.10 ± 0.38
0.122 ± 0.015
3.10 ± 0.38
0.122 ± 0.015
3.10 ± 0.38
0.122 ± 0.015
3.10 ± 0.38
0.122 ± 0.015
3.10 ± 0.38
0.122 ± 0.015
3.10 ± 0.38
F
Termination
Length
0.090 ± 0.015
2.29 ± 0.38
0.090 ± 0.015
2.29 ± 0.38
0.105 ± 0.015
2.67 ± 0.38
0.105 ± 0.015
2.67 ± 0.38
0.105 ± 0.015
2.67 ± 0.38
0.130 ± 0.015
3.30 ± 0.38
0.122 ± 0.015
3.10 ± 0.38
W
0.138
3.51
0.181
4.60
0.169
4.29
0.169
4.29
0.169
4.29
0.236
5.99
0.340
8.64
H
0.130
3.30
0.157
3.99
0.157
3.99
0.157
3.99
0.157
3.99
0.157
3.99
0.157
3.99
L
0.350
8.89
0.583
14.81
0.587
14.91
0.587
14.91
0.587
14.91
0.850
21.59
0.950
24.13
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
SM2615
SM4124
SM4527
0.01Ω - 0.06Ω
SM4527
0.1Ω - 2KΩ
SMH4527
SM6227
SM8035
Rev Date: 01/16/2013
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
80
60
40
20
-55ºC
70ºC
Stackpole Electronics, Inc.
Resistive Product Solutions
275°C
0
-60
-40
0
40
80
120
160
200
240
280
320
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
Packaging
Code
Tol
Code Description
Size
B
0.1%
2615
D
0.5%
4124
13" Reel
T
F
1%
4527, H4527
Plastic Tape
J
5%
6227
Z Jumper
8035
Quantity
1,500
800
1,200
750
350
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
Legacy Part Number (before January 3, 2011):
SEI Type
Code
Nominal
Resistance
Tolerance
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: 01/16/2013
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
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