Document Number: 30220
Revision 11-Sep-04
www.vishay.com
144
SPU Molded Style
Vishay Dale
For technical questions, contact ww2bresistors@vishay.com
Wirewound Resistors, Molded Style, Current Shunts,
Very Low Value, Four Terminal
FEATURES
• Molded four-terminal resistors for specialized
applications
• Extremely low resistance values for current sensing
applications
• Precision resistance tolerance
• Low temperature coefficients
• Complete welded construction
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL HISTORICAL POWER RATING * RESISTANCE RANGE WEIGHT
MODEL MODEL P25°CΩ(Typical)
W± 1% g
SPU050 SPU-50 1 0.001 - 0.060 2.5
SPU051 SPU-51 2 0.001 - 0.060 3.7
SPU052 SPU-52 4 0.001 - 0.200 4.8
SPU053 SPU-53 5 0.010 - 0.500 10.8
*Wattage rating is limited to 25 amperes maximum.
TECHNICAL SPECIFICATIONS
PARAMETER UNIT SPU MOLDED STYLE RESISTOR CHARACTERISTICS
Temperature Coefficient ppm/°C - 100 (- 10°C to + 80°C)
Dielectric Withstanding Voltage VAC 500 minimum
Short Time Overload - 5 x power for 5 seconds, limited to 25 amperes maximum
Maximum Working Voltage V (PxR)1/2
Insulation Resistance Ω10,000 Megohm minimum dry
Operating Temperature Range °C SPU-50 & SPU-51 = - 55/+175, SPU-52 & SPU-53 = - 55/+ 275
• Resistance tolerance available is 0.1%, 0.25%, 0.5%, 1.0%, 3.0% and 5.0% depending on resistor physical design and
resistance value.
GLOBAL RESISTANCE TOLERANCE PACKAGING SPECIAL
MODEL VALUE CODE
SPU052 L = Milliohm F = ± 1.0% E* = Lead Free, bulk (Dash Number)
(below 0.01Ω)J = ± 5.0% D = Tin/lead, bulk (up to 2 digits)
R = Decimal From 1-99
5L0000 = 0.005Ωas applicable
R10000 = 0.10Ω
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: SPU052R10000FD (preferred part numbering format)
SPU052R10 000FD
Historical Part Number example: SPU-52 0.1Ω 1% S51 (will continue to be accepted)
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING
SPU-052 0.100Ω1% S51
*Lead Free will not be available until Q1 2005
www.vishay.com
145
SPU Molded Style
Vishay Dale
Document Number: 30220
Revision 11-Sep-04
For technical questions, contact ww2bresistors@vishay.com
* Limited to 25 amperes maximum.
Wirewound Resistors, Molded Style, Current Shunts,
Very Low Value, Four Terminal
DIMENSIONS
MATERIAL SPECIFICATIONS
Element: Nickel-chromium alloy or copper-manganese
alloy, depending on resistance value
Molding Material: SPU050/051 thermo-set epoxy
SPU052/053 thermo-set silicone
Standard Terminals: SPU050/051:100% Sn
or 60/40 Sn/Pb coated
Copperweld®
SPU052/053:100% Sn
or 60/40 Sn/Pb coated
copper
Part Marking: DALE, Model, Wattage, Value, Tolerance,
Date Code
AMBIENT TEMPERATURE DERATING
Derating is required for ambient temperature above 25°C per the following graph
18 AWG
0.040 ± 0.002
[1.02 ± 0.051]
C
B
A
D
A
0.660 ± 0.010
[16.76 ± 0.25]
0.790 ± 0.010
[20.06 ± 0.25]
1.000 ± 0.010
[25.40 ± 0.25]
1.870 ± 0.010
[47.50 ± 0.25]
B
0.312 ± 0.010
[7.92 ± 0.25]
0.375 ± 0.010
[9.52 ± 0.25]
0.375 ± 0.010
[9.52 ± 0.25]
0.437 ± 0.010
[11.10 ± 0.25]
C
0.200 ± 0.015
[5.08 ± 0.38]
0.200 ± 0.015
[5.08 ± 0.38]
0.125 ± 0.015
[3.17 ± 0.38]
0.125 ± 0.015
[3.17 ± 0.38]
D
1.000 + 0.25 - 0.125
[25.40 + 6.35 - 3.17]
1.000 + 0.25 - 0.125
[25.40 + 6.35 - 3.17]
1.000 Minimum
[25.40 Minimum]
1.000 Minimum
[25.40 Minimum]
SPU050
SPU051
SPU052
SPU053
GLOBAL
MODEL
DIMENSIONS in inches [millimeters]
Derating
120
100
80
60
40
20
0
RATED POWER IN %
-55 -50 0 50 100 150 200 250 275
AMBIENT TEMPERATURE IN °C
SPU052 & 053
SPU050 & 051
25
175
Legal Disclaimer Notice
Vishay
Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
