WSMS2908
Vishay Dale
Power Metal Strip® Meter Shunt Resistor,
Very Low Value (down to 0.0001 Ω)
FEATURES
• High power to resistor size ratio
• 5-terminal connection design
• Use for single or multi-phase energy meters
• Proprietary processing technique produces
extremely low resistance values
• All welded construction
• Very low inductance (< 5 nH)
• Low thermal EMF (< 3 μV/°C)
• Compliant to RoHS directive 2002/95/EC
STANDARD ELECTRICAL SPECIFICATIONS
POWER RATING
RESISTANCE VALUE
RESISTANCE VALUES
CURRENTLY AVAILABLE (1)
Ω
WEIGHT
(typical)
g/1000 pieces
GLOBAL
MODEL
TOLERANCE
%
SIZE
P70 °C
W
RANGE
Ω
WSMS2908
2908
3.0
5.0
50μ to 1000μ
100μ, 250μ, 300μ, 430μ, 500μ
2100
Note
(1)
Other values may be available, contact factory
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
RESISTOR CHARACTERISTICS
500 for 100 μΩ, 225 for 250 μΩ,
175 for 300 μΩ, 430 μΩ, and 500 μΩ
Temperature Coefficient
ppm/°C
Operating Temperature Range
Maximum Current Rating
°C
A
- 65 to + 170
(P/R)1/2
GLOBAL PART NUMBER INFORMATION
GLOBAL PART NUMBERING: WSMS2908L2500JK (WSMS2908, 0.00025 Ω, 5 %)
W
S
M
S
2
9
0
8
L
2
5
0
0
J
K
GLOBAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
PACKAGING CODE
SPECIAL
WSMS2908
L = mΩ
J = 5.0 ꢀ
K = Bulk pack
E = Tape and reel
(Dash number)
(Up to 2 digits)
From 1 to 99 as
applicable
L1000 = 0.00010 Ω
L2500 = 0.00025 Ω
L3000 = 0.00030 Ω
L4300 = 0.00043 Ω
L5000 = 0.00050 Ω
** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902
www.vishay.com
42
For technical questions, contact: ww2bresistors@vishay.com
Document Number: 30160
Revision: 02-Jul-10
