WFP

www.vishay.com

Vishay Dale

Revision: 26-Jan-2021

1

Document Number: 30394

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

Power Metal Plate™ Current Sense Resistors,

Low Value (2 m

Ω to 8 mΩ), Hybrid Mount, High Power

LINKS TO ADDITIONAL RESOURCES

FEATURES

• 3939 size package with Kelvin terminals

• Ideal for all types of current sensing and pulse

applications including switching and linear

power supplies, instruments, power amplifiers,

shunts,

and

high

power

current

sensing

modules

• Proprietary processing technique produces low

resistance values (2 m

Ω to 8 mΩ)

• Solid metal manganese-copper and nickel-

chromium alloy resistive element with low TCR

(< 30 ppm/°C)

• Max. solder temperature up to 280 °C / 30 s or

250 °C / 5 min

• Very low inductance < 10 nH

• Finishes available for wire bonding, sintering, and

soldering (backside);

Electroless Nickel Immersion Gold (ENIG)

• Low thermal EMF (< 2 μV/°C)

• AEC-Q200 qualified

• Material categorization: for definitions of compliance

Note

with lead (Pb) terminations are not RoHS-compliant. Please see the information / tables in this datasheet for details

Note

Notes

identical to our standard EA (lead (Pb)-free), except that it has a package quantity of 500 pieces

333

DDD3 D

3D Models

Available

Available

Available

STANDARD ELECTRICAL SPECIFICATIONS

GLOBAL

MODEL

SIZE

W

TOLERANCE

%

RESISTANCE

VALUE RANGE

Ω

WEIGHT

(typical)

g/1000 pieces

WFPA3939

3939

20 at 120 °C

± 1.0, ± 5.0

0.002 to 0.005

437

WFPB3939

3939

20 at 120 °C

± 1.0, ± 5.0

0.0051 to 0.008

437

GLOBAL PART NUMBER INFORMATION

Global Part Numbering Example: WFPA39392L000FEA

GLOBAL

MODEL

(3 digits)

ELEMENT

MATERIAL

(1 digit)

CASE SIZE

(4 digits)

RESISTANCE

VALUE

(5 digits)

TOLERANCE

CODE

(1 digit)

PACKAGING

(2 digits)

SPECIAL

(2 digits)

WFP

A = CuMn

B = NiCrAl

3939

L = m

Ω*

R = decimal

2L000 = 0.002

Ω

R0100 = 0.01

Ω

* Use “L” for

resistance

values < 0.01

Ω

F = ± 1.0 %

J = ± 5.0 %

EA =

lead (Pb)-free,

tape / reel

EK =

lead (Pb)-free,

bulk

Dash numbers

1 thru 99

as applicable

F

P

A

3

9

3

9

2

L

0

0

0

F

E

A

W