Rev Date: 05/12/2011 1 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
SM/SMH Series
Surface Mount Wirewound Resistor Stackpole Electronics, Inc.
Resistive Product Solutions
Features: • High temperature molded encapsulation
• Flex termination for absorbing thermal expansion
• All welded construction
• Non-inductive types available as NSM
• RoHS compliant / lead-free
Maximum Dielectric
Type / Code Working Withstanding
Voltage Voltage 0.1%, 0.5%, 1%, 5%
±100 ppm/ºC 0.01 - 10(1)
± 20 ppm/ºC 10.2 - 1K
±100 ppm/ºC 0.01 - 10(1)
± 20 ppm/ºC 10.2 - 2K
SM4527 2W 60V >500V ±75 ppm/ºC 0.01 - 0.06(1)
SMH4527 3W 60V >500V ±75 ppm/ºC 0.01 - 0.06(1)
±100 ppm/ºC 0.01 - 10(1)
± 20 ppm/ºC 10.2 - 3.01K
±100 ppm/ºC 0.01 - 10(1)
± 20 ppm/ºC 10.2 - 5K
(1) Zero ohm available on all sizes
SM8035 4W 100V >500V
>500VSM4124 2W 50V
SM6227 3W 100V >500V
Power Rating
(Watts) @ 70ºC
Resistance Temperature
Coefficient
Ohmic Range (Ω) and Tolerance
SM2615 1W 25V >500V
Electrical Specifications
ABCDEF
Body Total Body Body Termination Termination
Length Length Height Width Width Length
0.26 ± 0.015 0.28 ± 0.032 0.14 ± 0.015 0.15 ± 0.015 0.1 ± 0.015 0.09 ± 0.015 0.138 0.13 0.35 inches
6.6 ± 0.4 7.1 ± 0.81 3.6 ± 0.4 3.8 ± 0.4 2.5 ± 0.4 2.3 ± 0.4 3.5 3.3 8.9 mm
0.41 ± 0.015 0.43 ± 0.032 0.18 ± 0.015 0.24 ± 0.015 0.122 ± 0.015 0.09 ± 0.015 0.181 0.157 0.583 inches
10.4 ± 0.4 10.9 ± 0.81 4.6 ± 0.4 6.1 ± 0.4 3.1 ± 0.4 2.3 ± 0.4 4.6 4.0 14.8 mm
0.455 ± 0.015 0.475 ± 0.032 0.15 ± 0.015 0.27 ± 0.015 0.122 ± 0.015 0.105 ± 0.015 0.169 0.157 0.587 inches
11.6 ± 0.4 12.1 ± 0.81 3.8 ± 0.4 6.9 ± 0.4 3.1 ± 0.4 2.7 ± 0.4 4.3 4.0 14.9 mm
0.455 ± 0.015 0.475 ± 0.032 0.15 ± 0.015 0.27 ± 0.015 0.122 ± 0.015 0.105 ± 0.015 0.169 0.157 0.587 inches
11.6 ± 0.4 12.1 ± 0.81 3.8 ± 0.4 6.9 ± 0.4 3.1 ± 0.4 2.7 ± 0.4 4.3 4.0 14.9 mm
0.625 ± 0.015 0.645 ± 0.032 0.25 ± 0.015 0.275 ± 0.015 0.122 ± 0.015 0.13 ± 0.015 0.236 0.165 0.85 inches
15.9 ± 0.4 16.4 ± 0.81 6.4 ± 0.4 7.0 ± 0.4 3.1 ± 0.4 3.3 ± 0.4 6.2 4.2 21.6 mm
0.8 ± 0.015 0.825 ± 0.032 0.362 ± 0.015 0.35 ± 0.015 0.24 ± 0.015 0.123 ± 0.015 0.34 0.19 0.95 inches
20.3 ± 0.4 21.0 ± 0.81 9.2 ± 0.4 8.9 ± 0.4 6.1 ± 0.4 3.1 ± 0.4 8.6 4.8 24.1 mm
SM6227
SM8035
SMH4527
SM4527
Type / Code Unit
SM2615
SM4124
WH L
Mechanical Specifications
Rev Date: 05/12/2011 2 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
SM/SMH Series
Surface Mount Wirewound Resistor Stackpole Electronics, Inc.
Resistive Product Solutions
Power Derating Curve:
Ambient Temperature (ºC)
150 200 250 300
25
050 100
100
75
50
Percent Rated Power (%)
275
25 70
Test Results
Moisture Resistance ±1%
Thermal Shock ±0.5%
Load Life @ 70ºC - 1,000 hrs. ±1%
Resistance to Soldering Heat ±1
Terminal Strength ±0.5%
Dielectric Withstanding Voltage ±0.001% / V
Short Time Overload ±0.2%
Operating Temperature Range: -55ºC to +275ºC
Performance Characteristics
Size
SM 2615 Code Tol Code Quantity
SMH 4124 B 0.1% 1,500
NSM 4527 D 0.5% 800
(H)4527 F 1% 1,200
6227 J 5% 750
8035 Z Jumper 350
Standard
Non-inductive
T
2W
2W
1W
3W
3W
High Power
10 Kohm = 10K0
Zero ohm jumper = 0R00
4W 8035
13" reel
plastic tape
Four characters with the
multiplier used as the
decimal holder.
"L" used as multiplier of 10
-
3
for any value under
0.1 ohm.
4124
4527, H4527
Product Series Power Tolerance Resistance ValuePackaging
6227
2615
0.01 ohm = 10L0
Description Size
123456789101112
SM4124FT1K00
How to Order
Legacy Part Number (before January 3, 2011):
Nominal
Resistance Tolerance
1K 1%
T
y
pe Description Code Size Tolerance T
y
pes Qt
y
Description Code
SM Standard 1 2615 0.1% SM 1 1,500
SMH High Power 2 4124 0.5% SM 2 800
NSM Non-inductive 2A 4527 1% SM 2A, 3A 1,200
(H)3A 4527 5% SM 3 750
3 6227 SM4 350
4 8035
13" reel
plastic tape R
SEI Type Code Packa ging
SM 2 R
