WSR High Power

www.vishay.com

Vishay Dale

Revision: 18-Jan-13

1

Document Number: 31059

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

Low Value (down to 0.001

), Surface Mount

FEATURES

• Molded high temperature encapsulation

• Improved thermal management incorporated

into design

• Ideal for all types of current sensing, voltage

division

and

pulse

applications

including

switching

and

linear

power

supplies,

instrumentation, power amplifiers

• Proprietary processing technique produces

extremely low resistance values (down to

0.001

)

• All welded construction

• Solid metal nickel-chrome or manganese-

copper alloy resistive element with low TCR

(< 20 ppm/°C)

• Solderable terminations

• Very low inductance 0.5 nH to 5 nH

• Excellent frequency response to 50 MHz

• Low thermal EMF (< 3 μV/°C)

• Integral heat sink not utilized for resistance values less

than 0.0075



• Material categorization: For definitions of compliance

Notes

* Lead (Pb)-containing terminations are not RoHS-compliant.

Exemptions may apply.

technologies.

Notes

• Part marking: DALE, model, value, tolerance, date code.

 120 °C.

STANDARD ELECTRICAL SPECIFICATIONS

GLOBAL



MODEL

SIZE

POWER RATING

W

RESISTANCE VALUE RANGE



WEIGHT

(typical)

g/1000 pieces

Tol. ± 0.5 %

Tol. ± 1.0 %

WSR5

4527

0.01 to 0.3

0.001 to 0.3

476

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

WSR5 RESISTOR CHARACTERISTICS

Temperature coefficient

ppm/°C

± 75 for 0.01

 to 0.3 ; ± 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 

Element TCR

ppm/°C

< 20

Dielectric withstanding voltage

> 500

Insulation resistance



Operating temperature range

°C

- 65 to + 275

Maximum working voltage

V

GLOBAL PART NUMBER INFORMATION

Global Part Numbering example: WSR5R0100FEA (preferred part numbering format)

GLOBAL MODEL

VALUE

TOLERANCE CODE

PACKAGING

SPECIAL

WSR5

L = m

*

R = Decimal

5L000 = 0.005



R0100 = 0.01



* use “L” for resistance

values < 0.01



D = ± 0.5 %

F = ± 1.0 %

J = ± 5.0 %

EA = Lead (Pb)-free, tape/reel

EK = Lead (Pb)-free, bulk

TA = Tin/lead, tape/reel (R86)

BA = Tin/lead, bulk (B43)

(Dash number)

(Up to 2 digits)

From 1 to 99 as

applicable

R5R0

0

0

F

1

WS

A

E