SPU Molded Style
Vishay Dale
Wirewound Resistors, Molded Style, Current Shunts,
Very Low Value, Four Terminal
www.vishay.com For technical questions, contact: ww2bresistors@vishay.com Document Number: 30220
166 Revision: 08-Dec-10
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
Notes
(1) Wattage rating is limited to 25 A maximum
• 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
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
HISTORICAL
MODEL
POWER RATING (1)
P25 °C
W
RESISTANCE RANGE
Ω
± 1 %
WEIGHT
(typical)
g
SPU050 SPU-50 1 0.001 to 0.060 2.5
SPU051 SPU-51 2 0.001 to 0.060 3.7
SPU052 SPU-52 4 0.001 to 0.200 4.8
SPU053 SPU-53 5 0.010 to 0.500 10.8
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 s, limited to 25 A maximum
Maximum Working Voltage V (P x R)1/2
Insulation Resistance Ω10 000 MΩ minimum dry
Operating Temperature Range °C SPU050 and SPU051 = - 55 to + 175, SPU052 and SPU053 = - 55 to + 275
GLOBAL RESISTANCE TOLERANCE PACKAGING SPECIAL
MODEL VALUE CODE
SPU050
SPU051
SPU052
SPU053
L = mΩF = ± 1.0 %E (1) = Lead (Pb)-free, bulk (Dash Number)
(below 0.01 Ω ) J = ± 5.0 %D = Tin/lead, bulk (up to 2 digits)
R = Decimal
From 1 to 99
5L0000 = 0.005 Ω as applicable
R10000 = 0.10 Ω
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: SPU052R10000FD (preferred part numbering format)
SPU05 2 R1 0 0 0 0 FD
Historical Part Number example: SPU-52 0.1 Ω 1 % S51 (will continue to be accepted)
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING
SPU-052 0.100 Ω1 %S51
Note:
(1) Lead (Pb)-free termination
Document Number: 30220 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com
Revision: 08-Dec-10 167
SPU Molded Style
Wirewound Resistors, Molded Style, Current Shunts,
Very Low Value, Four Terminal Vishay Dale
DIMENSIONS in inches [millimeters]
Note
• Limited to 25 A 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
D
A
18 AWG
0.040 ± 0.002
[1.02 ± 0.051]
BC
GLOBAL
MODEL
DIMENSIONS in inches [millimeters]
ABCD
SPU050 0.660 ± 0.010
[16.76 ± 0.25]
0.312 ± 0.010
[7.92 ± 0.25]
0.200 ± 0.015
[5.08 ± 0.38]
1.000 + 0.25 - 0.125
[25.40 + 6.35 - 3.17]
SPU051 0.790 ± 0.010
[20.06 ± 0.25]
0.375 ± 0.010
[9.52 ± 0.25]
0.200 ± 0.015
[5.08 ± 0.38]
1.000 + 0.25 - 0.125
[25.40 + 6.35 - 3.17]
SPU052 1.000 ± 0.010
[25.40 ± 0.25]
0.375 ± 0.010
[9.52 ± 0.25]
0.125 ± 0.015
[3.17 ± 0.38]
1.000 minimum
[25.40 minimum]
SPU053 1.870 ± 0.010
[47.50 ± 0.25]
0.437 ± 0.010
[11.10 ± 0.25]
0.125 ± 0.015
[3.17 ± 0.38]
1.000 minimum
[25.40 minimum]
Derating
120
100
80
60
40
20
0
%
N
I
R E W O P
D E
T
A
R
- 55 - 50 0 50 100 150 200 250 275
AMBIENT TEMPERATURE IN
°C
SPU052 and 053
SPU050 and 051
25 175
Document Number: 91000 www.vishay.com
Revision: 11-Mar-11 1
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