SPU Molded Style
Vishay Dale
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
MODEL
SPU050
SPU051
SPU052
SPU053
HISTORICAL
MODEL
SPU-50
SPU-51
SPU-52
SPU-53
POWER RATING *
P
25
°
C
W
1
2
4
5
RESISTANCE RANGE
±
1%
0.001 - 0.060
0.001 - 0.060
0.001 - 0.200
0.010 - 0.500
Ω
WEIGHT
(Typical)
g
2.5
3.7
4.8
10.8
• 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.
*Wattage rating is limited to 25 amperes maximum.
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature Coefficient
Dielectric Withstanding Voltage
Short Time Overload
Maximum Working Voltage
Insulation Resistance
Operating Temperature Range
UNIT
ppm/°C
V
AC
-
V
Ω
°C
SPU MOLDED STYLE RESISTOR CHARACTERISTICS
- 100 (- 10°C to + 80°C)
500 minimum
5 x power for 5 seconds, limited to 25 amperes maximum
(PxR)
1/2
10,000 Megohm minimum dry
SPU-50 & SPU-51 = - 55/+175, SPU-52 & SPU-53 = - 55/+ 275
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: SPU052R10000FD (preferred part numbering format)
S
GLOBAL
MODEL
SPU052
P
U
0
5
2
R
1
0
0
0
0
F
D
SPECIAL
RESISTANCE
VALUE
L
= Milliohm
(below 0.01Ω)
R
= Decimal
5L0000
= 0.005Ω
R10000
= 0.10Ω
TOLERANCE
CODE
F
=
±
1.0%
J
=
±
5.0%
PACKAGING
E*
= Lead Free, bulk
D
= Tin/lead, bulk
(Dash Number)
(up to 2 digits)
From
1-99
*Lead Free will not be available until Q1 2005
as applicable
Historical Part Number example: SPU-52 0.1Ω 1% S51 (will continue to be accepted)
SPU-052
HISTORICAL MODEL
0.100Ω
RESISTANCE VALUE
1%
TOLERANCE CODE
S51
PACKAGING
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144
For technical questions, contact ww2bresistors@vishay.com
Document Number: 30220
Revision 11-Sep-04
SPU Molded Style
Wirewound Resistors, Molded Style, Current Shunts,
Vishay Dale
Very Low Value, Four Terminal
DIMENSIONS
D
A
B
18 AWG
0.040
±
0.002
[1.02
±
0.051]
C
GLOBAL
MODEL
SPU050
SPU051
SPU052
SPU053
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]
DIMENSIONS
in inches [millimeters]
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]
* Limited to 25 amperes maximum.
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
RATED POWER IN %
120
100
80
60
40
SPU050 & 051
20
0
-55
SPU052 & 053
-50
0
25
50
100
150
175
200
250
275
Derating
Document Number: 30220
Revision 11-Sep-04
AMBIENT TEMPERATURE IN
°
C
For technical questions, contact ww2bresistors@vishay.com
www.vishay.com
145
Legal Disclaimer Notice
Vishay
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.
Document Number: 91000
Revision: 08-Apr-05
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