www.vishay.com For technical questions, contact: ww2bresistors@vishay.com Document Number: 30240
168 Revision: 10-Sep-04
SPU Open Style
Vishay Dale
Wirewound Resistors, Open Style, Current Shunts,
Custom Tailored, Very Low Value, High Precision
`
FEATURES
•Custom-made four-terminal resistors to meet your
individual specifications
•Extremely low resistance values for current sensing
applications
•Precision resistance tolerance
•Low temperature coefficients
•Complete welded construction
The mechanical configurations and electrical properties of our shunts are made to your specifications. The following are
examples of “Typical Electrical Specifications” from several existing custom designs. Consult our engineering department for
help in designing your own configuration and/or electrical properties, see email address at the bottom of this page.
Note
• 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
P25 °C
W
CURRENT RATING
(maximum)
A
RESISTANCE RANGE
Ω
± 1 %
SPU104 SPU-104 1.875 25 0.0025 - 0.010
SPU111...1 SPU-111-1 1 10 0.005
SPU114 SPU-114 1 10 0.00167 - 0.020
TECHNICAL SPECIFICATIONS
PARAMETER UNIT SPU OPEN STYLE RESISTOR CHARACTERISTICS
Temperature Coefficient ppm/°C Typical is ± 100 (- 10 °C to + 80 °C) consult factory for tighter TCR availability
Resistance Range ΩDependent upon configuration, consult factory
Maximum Current Rating A Dependent upon configuration, consult factory
Operating Temperature Range °C - 55 to + 275
GLOBAL RESIST ANCE TO LERANCE PA CKAGING SPECIAL
MODE L V ALUE CODE
SPU 111 L = mΩF = ± 1.0 % E* = Lead (Pb)-free, bulk (Dash Number)
(below 0.01 Ω ) J = ± 5.0 % D = Ti n/lead, bulk (up to 2 digits)
R = Decima l From 1 - 99
5L0000 = 0.005 Ω as applicable
R10000 = 0.10 Ω
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: SPU1115L0000FD1 (preferred part numbering format)
SP U1 1 1 5L 00 00 FD 1
Historical Part Number Example: SPU-111-1 0.005 Ω 1 % S51 (will continue to be accepted)
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING
SPU-111-1 0.005 Ω1 %S51
* Lead (Pb)-free will not be available until Q1 2005
Document Number: 30240 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com
Revision: 10-Sep-04 169
SPU Open Style
Wirewound Resistors, Open Style, Current Shunts,
Custom Tailored, Very Low Value, High Precision Vishay Dale
DIMENSIONS in inches [millimeters]
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy,
depending on resistor type and/or resistance value
Coating: None
Standard Terminals: SPU104: 100 % Sn, w/Nickel
underplate, or 60/40 Sn/Pb coated copper
Other Models: 100 % Sn, w/Nickel underplate, or 60/40
Sn/Pb coated Copperweld®
Part Marking: None
AMBIENT TEMPERATURE DERATING
Derating is required for ambient temperatures above 25 °C
per the following graph
0.190 ± 0.005
[4.83 ± 0.127]
0.200 ± 0.005
[5.08 ± 0.127]
C
0.625 [15.88]
max. 0.060 ± 0.005
[1.52 ± 0.127]
0.040 [1.02]
typ.
L
LC C L
End View
C C
0.500 ± 0.020
[12.7 ± 0.508]
Side View
0.040 ± 0.005
[1.02 ± 0.127]
L L
0.500 ± 0.020
[12.7 ± 0.508]
0.440 ± 0.005
[11.18 ± 0.127]
Top View
0.525 [13.34]
max.
0.100 ± 0.010
[2.54 ± 0.254]
0.200 ± 0.010
[5.08 ± 0.254]
End View
0.350 ± 0.010
[8.89 ± 0.254]
Side View
Side View
0.046 ± 0.010
[1.63 ± 0.254]
0.127 [0.005]
max. BURR
0.120 ± 0.020
[3.05 ± 0.508]
RAD. 4 PL.
0.130 ± 0.010
[3.30 ± 0.254]
Top View
0.040 ± 0.002
[1.02 ± 0.051]
Dia.
0.200 ± 0.010
[5.08 ± 0.254]
0.100 ± 0.010
[2.54 ± 0.254]
1.10 ± 0.010
[27.94 ± 0.254]
0.850 ± 0.025
[21.59 ± 0.635]
0.138 ± 0.113
[3.50 ± 2.87]
C
L
S
PU104
SPU111...1
SPU114
D erating
- 55 - 50 0 5 0 100 150 200 250 275
AMBIENT TEMPERA TURE IN °C
120
100
80
60
40
20
0
25
RATED POWER IN %
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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therein, which apply to these products.
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