SP Series
Stackpole Electronics, Inc.
Fusing Wirewound Resistor
Resistive Product Solutions
Features:
•
•
•
•
•
•
•
•
•
High performance for low cost
Complete welded terminations
Tinned copper leads
High temperature silicone coating
Flameproof feature meets UL1412
Bulk packaging available – contact Stackpole for package quantities
100% RoHS compliant and lead free without exemption
Halogen free
REACH compliant
Electrical Specifications
Type/Code
Dielectric Strength
(V)
Power Rating (W)
@ 25°C
TCR (ppm/ºC)
Ohmic Values (Ω) and
Tolerance
1000
4
± 20
5%
10 - 100
SP3A
Max Voltage Rating = √P*R
Mechanical Specifications
Type/Code
A
B
C
D
(Bulk)(1)
Unit
SP3A
0.500 ± 0.062
12.70 ± 1.57
0.218 ± 0.031
5.54 ± 0.79
0.032 ± 0.002
0.81 ± 0.05
1.500 typ.
38.10 typ.
inches
mm
(1) See Packaging Specifications for lead length dimension for tape and reel packaged product
Operating Temperature: -55°C to + 350°C
Power Derating Curve:
Rev Date: 4/30/2021
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
1
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marketing@seielect.com
SP Series
Stackpole Electronics, Inc.
Fusing Wirewound Resistor
Resistive Product Solutions
Fusing Time:
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
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.
Minimum
60 seconds
100°C
240°C
*
N/A
Convection IR Reflow
Description
Maximum
Recommended
Minimum
Ramp Up (°C/sec)
Dwell Time > 217°C
Solder Temp.
Dwell Time at Max.
Ramp DN (°C/sec)
3°C/sec
150 seconds
260°C
30 seconds
6°C/sec
2°C/sec
90 seconds
245°C
15 seconds
3°C/sec
*
60 seconds
*
10 seconds
*
Rev Date: 4/30/2021
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
SP Series
Stackpole Electronics, Inc.
Fusing Wirewound Resistor
Resistive Product Solutions
Recommended Lead Free Resistor Reflow Profile
Packaging Specifications
Type/Code
A max.(1)
B max
C
D(2)
Tape
Unit
SP3A
2.063
52.40
11.000
279.40
0.394 ± 0.020
10.00 ± 0.50
2.063 ± 0.079
52.40 ± 2.00
0.250
6.35
inches
mm
Dimension "E":
(1)
(2)
This is a non-critical dimension that does not have a tolerance in the standard.
Range of diameters is from 0.547 inches (13.90 mm) to 1.500 inches (38.10 mm).
Reference value only. The "A" dimension shall be governed by the overall length of the taped component.
The distance between flanges shall be 0.059 inches (1.50 mm) to 0.315 (8.00 mm) greater than the overall component.
The given dimension "D" expresses the standard width spacing. A 26 mm narrow spacing is available as option "N" packaging code.
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.
Rev Date: 4/30/2021
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
SP Series
Stackpole Electronics, Inc.
Fusing Wirewound Resistor
Resistive Product Solutions
RoHS Compliance Status
Standard
Product
Series
Description
Package /
Termination
Type
SP
Fusing Wirewound Resistor
Axial
Standard
Series
RoHS
Compliant
YES
Lead-Free Termination
Composition
Lead-Free
Mfg. Effective Date
(Std Product Series)
100% Matte Sn
Always
Lead-Free
Effective Date
Code
(YY/WW)
Always
“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
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9
10
S
P
3
A
J
T
1
0
0
R
Code
T
Packaging
Description
Size
11" Reel Tape
SP3A
Product Series
Code
Description
SP3A Fusing Wirewound
Tolerance
Code Tol
J
5%
Resistance Value
Quantity
500
Four characters with the
"R" multiplier used as the
decimal holder
10 ohm = 10R0
100 ohm = 100R
Rev Date: 4/30/2021
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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