WSR
Vishay Dale
www.vishay.com
Power Metal Strip® Resistors,
Low Value (down to 0.001 ), Surface Mount
FEATURES
• Molded high temperature encapsulation
• All welded construction of the Power Metal
Strip® resistors are ideal for all types of current
sensing,
applications
voltage
division
and
pulse
Available
• Proprietary processing technique produces
extremely low resistance values (down to
0.001 )
• Solid metal nickel-chrome or manganese-
copper alloy resistive element with low TCR
(< 20 ppm/°C)
• Very low inductance 0.5 nH to 5 nH
• Excellent frequency response to 50 MHz
• Low thermal EMF (< 3 μV/°C)
• AEC-Q200 qualified (1)
Available
Available
DESIGN TOOLS (click logo to get started)
Models
Available
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
Notes
•
This datasheet provides information about parts that are RoHS-compliant and / or parts that are non-RoHS-compliant. For example, parts
with lead (Pb) terminations are not RoHS-compliant. Please see the information / tables in this datasheet for details.
Follow link to Overview of Automotive Grade Products for more details: www.vishay.com/doc?49924.
Flame retardance test may not be applicable to some resistor technologies.
•
(1)
STANDARD ELECTRICAL SPECIFICATIONS
RESISTANCE VALUE RANGE
POWER RATING
WEIGHT
(typical)
g/1000 pieces
GLOBAL
MODEL
SIZE
P70 °C
W
Tol. 0.ꢀ %
0.005 to 1.0
0.005 to 0.2
Tol. 1.0 %
0.001 to 1.0
0.001 to 0.2
WSR2
WSR3
4527
4527
2.0
3.0 (1)
440
440
Notes
•
Part marking: DALE, model, value, tolerance, date code.
The WSR3 requires a minimum of 1050 sq. mil. circuit traces connecting to the recommended solder pad.
(1)
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
WSR2 AND WSR3 RESISTOR CHARACTERISTICS
75 for 0.010 to 1.0 ; 110 for 0.005 to 0.0099 ;
300 for 0.004 to 0.0049 450 for 0.003 to 0.0039 ;
600 for 0.002 to 0.0029 ; 750 for 0.001 to 0.0019
Temperature coefficient
ppm/°C
Element TCR
Dielectric withstanding voltage
Insulation resistance
ppm/°C
VAC
< 20
> 500
> 109
Operating temperature range
Maximum working voltage
°C
V
- 65 to + 275
(P x R)1/2
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: WSR2ꢀL000FEA (visit www.vishay.net Vishay Dale parts numbering manual for all options)
W
S
R
2
ꢀ
L
0
0
0
F
E
A
GLOBAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
PACKAGING CODE (1)
SPECIAL
WSR2
WSR3
L = m*
R = decimal
D = 0.5 ꢀ
F = 1.0 ꢀ
J = 5.0 ꢀ
EA = lead (Pb)-free, tape/reel
EK = lead (Pb)-free, bulk
(dash number)
(up to 2 digits)
from 1 to 99 as
applicable
ꢀL000 = 0.005
R0100 = 0.01
* Use “L” for resistance
values < 0.01
TA = tin/lead, tape/reel (R86)
BA = tin/lead, bulk (B43)
Note
(1)
Packaging code: EB (lead (Pb)-free) and TB (tin / lead) are non-standard packaging codes designating 1000 piece reels. These non-standard
packaging codes are identical to our standard EA (lead (Pb)-free) and TA (tin / lead), except that they have a package quantity of 1000 pieces.
Revision: 22-Aug-16
Document Number: 30101
1
For technical questions, contact: ww2bresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
