WSLP3921 datasheet(2/5 Pages) VISHAY

2 / 5 page

WSLP3921, WSLP5931

www.vishay.com

Vishay Dale

Upgrade for TCR to Kelvin Termination With WSLP2726

Revision: 15-Jul-2022

Document Number: 30176

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

Notes

• Consult factory for detailed TCR performance across full temperature range as performance is resistance value specific

• “Temperature Coefficient of Resistance for Current Sensing” white paper: www.vishay.com/doc?30405

(1) Component TCR - total TCR that includes the TCR effects of the resistor element and the copper terminal

(2) Element TCR - only applies to the alloy used for the resistor element

(3) Maximum working voltage - the WSL is not voltage sensitive, but is limited by power / energy dissipation and is also not ESD sensitive

DIMENSIONS in inches (millimeters)

CONSTRUCTION OUTLINE

Notes

• 3D models available: 3921 model www.vishay.com/doc?30315; 5931 model www.vishay.com/doc?30317

• Surface mount solder profile recommendations: www.vishay.com/doc?31052

Note

(1) H dimension is reference only. Total height is H dimension + D thickness ± 0.010" (± 0.254 mm)

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

RESISTOR CHARACTERISTICS

WSLP3921

WSLP5931

Component temperature coefficient

(including terminal) (1)

TCR measured from -55 °C to 150 °C

ppm/°C

± 350 for 0.1 m

+300 for 0.1 m

Ω (+25 °C to +170 °C)

+150 for 0.2 m

± 225 for 0.2 m

+170 for 0.3 m

Ω and 0.4 mΩ

± 175 for 0.3 m

Ω and 0.5 mΩ

+150 for 0.5 m

Ω to 1 mΩ

± 75 for 1 m

Ω to 4 mΩ

+50 for 1.5 m

Ω to 4 mΩ

Element TCR (2)

ppm/°C

< 20

Operating temperature range

°C

-65 to +170

Maximum working voltage (3)

V(P x R)1/2

Typical sensing traces

Resistive element:

refer to table below

for element material

Terminal: solid copper

Terminal / element weld

MODEL

DIMENSIONS in inches (millimeters)

SOLDER PAD DIMENSIONS in inches (millimeters)

H (1)

WSLP3921

0.394 ± 0.010

(10.0 ± 0.254)

0.205 ± 0.015

(5.20 ± 0.381)

0.020

(0.5)

0.080 ± 0.010

(2.00 ± 0.254)

0.106 ± 0.010

(2.70 ± 0.254)

0.244 ± 0.010

(6.20 ± 0.254)

0.220 ± 0.005

(5.60 ± 0.13)

WSLP3921

(0.1 m

Ω only)

0.130 ± 0.010

(3.30 ± 0.254)

0.156 ± 0.010

(3.96 ± 0.254)

0.148 ± 0.005

(3.76 ± 0.13)

WSLP5931

0.591 ± 0.010

(15.0 ± 0.254)

0.305 ± 0.015

(7.75 ± 0.381)

0.020

(0.5)

0.157 ± 0.010

(4.00 ± 0.254)

0.205 ± 0.010

(5.20 ± 0.254)

0.344 ± 0.010

(8.75 ± 0.254)

0.220 ± 0.005

(5.60 ± 0.13)

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