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 winding available (contact Stackpole with requirements)
100% RoHS compliant and lead free without exemption
Halogen free
REACH compliant
Size 2615 last time buy August 31, 2022 - for more information, please see our
PDN here
Electrical Specifications
Type / Code
Power Rating
(W)
@ 70ºC
1
Maximum
Working
Voltage
Dielectric
Withstanding
Voltage (V)
TCR
(ppm/ºC)
± 75
± 100
± 20
± 75
± 100
± 20
± 75
± 100
± 20
± 75
± 75
± 75
± 100
± 20
± 75
± 100
± 20
Ohmic Range (Ω) and Tolerance
0.1%
0.5%
-
3 - 10
1%
1 - 10
10.2 - 400
5%
0.01 - 0.091
0.1 - 10
11 - 400
SM2615
SM4124
2
SM4527
SM4527…-LP
SMH4527
SM6227
2
√P*R
2
3
3
> 500
5 - 10
10.1 - 400
-
5 - 10
3 - 10
10.1 - 1 K
-
5 - 10
3 -10
10.1 - 1 K
-
-
-
10.1 - 3 K
-
10.1 - 5 K
SM8035
4
0.051 - 0.098
0.01 - 0.091
0.1 - 10
10.2 - 1 K
11 - 1 K
0.051- 0091
0.01 - 0.091
0.1 - 10
10.2 - 1 K
11 - 1 K
0.01 - 0.05
0.01 - 0.05
0.051 - 0.091
0.1 - 10
10.2 - 3 K
11 - 3 K
0.051 - 0.091
0.1 - 10
10.2 - 5 K
11 - 5 K
Mechanical Specifications
Type / Code
SM2615
SM4124
SM4527
SM4527…-LP
SMH4527
SM6227
SM8035
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
11.56
0.625
15.88
0.800
20.32
±
±
±
±
±
±
0.015
0.38
0.015
0.38
0.015
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
12.07
0.645
16.38
0.830
21.08
±
±
±
±
±
±
C
Body
Height
0.140 ± 0.015
3.56 ± 0.38
0.180 ± 0.015
4.57 ± 0.38
0.215 ± 0.015
5.46 ± 0.38
0.150 ± 0.015
3.81 ± 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
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
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
0.015
0.38
0.015
0.38
0.015
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
0.032 0.150 ± 0.015 0.270 ±
0.81
3.81 ± 0.38
6.86 ±
0.032 0.250 ± 0.015 0.275 ±
0.81
6.35 ± 0.38
6.99 ±
0.032 0.370 ± 0.015 0.350 ±
0.81
9.40 ± 0.38
8.89 ±
0.015 0.122 ± 0.015 0.105 ±
0.38
3.10 ± 0.38
2.67 ±
0.015 0.122 ± 0.015 0.130 ±
0.38
3.10 ± 0.38
3.30 ±
0.015 0.115 ± 0.015 0.165 ±
0.38
2.92 ± 0.38
4.19 ±
Rev Date: 8/19/2021
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
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
Test
Moisture Resistance
Thermal Shock
Load Life @ 70ºC - 1000 hours
Resistance to Soldering Heat
Terminal Strength
Dielectric Withstanding Voltage
Short Time Overload
Operating temperature range is -55ºC to +275ºC
Test Specification
± 1%
± 0.5%
± 1%
± 1%
± 0.5%
± 0.001% / V
± 0.2%
Power Derating Curve:
SM Series Hot Spot Temperature
Rev Date: 8/19/2021
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
SM / SMH Series
Surface Mount Wirewound Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Recommended Solder Profile
This information is intended as a reference for solder profiles for Stackpole resistive components. These profiles should
be compatible with most soldering processes. These are only recommendations. Actual numbers will depend on board
density, geometry, packages used, etc., especially those cells labeled with “*”.
100% Matte Tin / RoHS Compliant Terminations
Soldering iron recommended temperatures: 330°C to 350°C with minimum duration.
Maximum number of reflow cycles: 3.
Wave Soldering
Description
Maximum
Recommended
Minimum
60 seconds
100°C
240°C
*
N/A
Preheat Time
80 seconds
70 seconds
Temperature Diff.
140°C
120°C
Solder Temp.
260°C
250°C
Dwell Time at Max.
10 seconds
5 seconds
Ramp DN (°C/sec)
N/A
N/A
Temperature Diff. = Defference between final preheat stage and soldering stage.
Convection IR Reflow
Description
Ramp Up (°C/sec)
Dwell Time > 217°C
Solder Temp.
Dwell Time at Max.
Ramp DN (°C/sec)
Maximum
3°C/sec
150 seconds
260°C
30 seconds
6°C/sec
Recommended
2°C/sec
90 seconds
245°C
15 seconds
3°C/sec
Minimum
*
60 seconds
*
10 seconds
*
Recommended Lead Free Resistor Reflow Profile
Rev Date: 8/19/2021
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
3
www.seielect.com
marketing@seielect.com
SM / SMH Series
Surface Mount Wirewound Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
RoHS Compliance
Stackpole Electronics has joined the worldwide effort to reduce the amount of lead in electronic components and to meet the various
regulatory requirements now prevalent, such as the European Union’s directive regarding “Restrictions on Hazardous Substances”
(RoHS 3). As part of this ongoing program, we periodically update this document with the status regarding the availability of our
compliant components. All our standard part numbers are compliant to EU Directive 2011/65/EU of the European Parliament as
amended by Directive (EU) 2015/863/EU as regards the list of restricted substances.
RoHS Compliance Status
Standard
Product
Series
SM
Description
Surface Mount - General Purpose and
Precision Wirewound Resistor
Package /
Termination
Type
SMD
Standard
Series
RoHS
Compliant
YES
Lead-Free Termination
Composition
100% Matte Sn
Lead-Free
Mfg. Effective Date
(Std Product Series)
Jan-06
Lead-Free
Effective Date
Code
(YY/WW)
06/01
“Conflict Metals” Commitment
We at Stackpole Electronics, Inc. are joined with our industry in opposing the use of metals mined in the “conflict region” of the eastern
Democratic Republic of the Congo (DRC) in our products. Recognizing that the supply chain for metals used in the electronics industry
is very complex, we work closely with our own suppliers to verify to the extent possible that the materials and products we supply do
not contain metals sourced from this conflict region. As such, we are in compliance with the requirements of Dodd-Frank Act regarding
Conflict Minerals.
Compliance to “REACH”
We certify that all passive components supplied by Stackpole Electronics, Inc. are SVHC (Substances of Very High Concern) free and
compliant with the requirements of EU Directive 1907/2006/EC, “The Registration, Evaluation, Authorization and Restriction of
Chemicals”, otherwise referred to as REACH. Contact us for complete list of REACH Substance Candidate List.
Environmental Policy
It is the policy of Stackpole Electronics, Inc. (SEI) to protect the environment in all localities in which we operate. We continually strive
to improve our effect on the environment. We observe all applicable laws and regulations regarding the protection of our environment
and all requests related to the environment to which we have agreed. We are committed to the prevention of all forms of pollution.
How to Order
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
S
M
4
1
2
4
F
T
1
K
0
0
-
L
P
Product Series
Code
Description
SM
Standard
SMH
High Power
NSM Non-inductive
Power Rating
Size
W
2615
1
4124
2
4527
2
(H)4527
3
6227
3
8035
4
Tolerance
Code
Tol
B
0.1%
D
0.5%
F
1%
J
5%
Code
T
Packaging
Size
2615
4527(-LP), H4527
13" Reel
4527
Plastic Tape
4124
6227
8035
Description
Quantity
1500
1200
900
800
750
350
Resistance Value
Four characters with the
multiplier used as the
decimal holder.
"L" used as multiplier
-3
of 10 for any value
under 0.1 ohm.
0.01 ohm = 10L0
0.1 ohm = R100
1 Kohm = 1K00
Code
blank
-LP
Special
Description
Standard
Low Profile
Rev Date: 8/19/2021
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
4
www.seielect.com
marketing@seielect.com
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