WSHM2818 datasheet(2/4 Pages) VISHAY

2 / 4 page

WSHM2818

www.vishay.com

Vishay Dale

Revision: 14-Feb-2022

Document Number: 30188

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

(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; refer to item 1 in the construction illustration on the following page

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

DIMENSIONS in inches (millimeters)

Notes

• 3D models available: www.vishay.com/doc?30324

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

TYPICAL SENSING LAYOUT

SENSING WITH VIA LAYOUT (best performance)

Note

• Sensing locations are based on the construction of the part; terminals are wrapped from the outside to underneath. These options place the

sensing location nearest the temperature stable resistance element, which minimizes contact resistance and optimizes TCR

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

RESISTOR CHARACTERISTICS

Component temperature coefficient (including terminal) (1)

ppm/°C

± 250 for 1 m

Ω to 1.99 mΩ

± 200 for 2 m

Ω to 5.99 mΩ

± 75 for 6 m

Ω to 200 mΩ

Element TCR (2)

ppm/°C

< 20

Inductance

< 5

Operating temperature range

°C

-65 to +170

Maximum working voltage (3)

V(P x R)1/2

MODEL

RESISTANCE

RANGE

DIMENSIONS

SOLDER PAD DIMENSIONS

WSHM2818

0.001 to 0.2

0.280 ± 0.010

(7.1 ± 0.25)

0.180 ± 0.010

(4.6 ± 0.25)

0.059 ± 0.010

(1.50 ± 0.25)

0.125 ± 0.010

(3.18 ± 0.25)

0.138

(3.5)

0.200

(5.1)

0.024

(0.61)

0.138

(3.51)

0.210

(5.33)

0.020

(0.51)

0.024

(0.61)

0.143

(3.63)

0.210

(5.33)

0.026

(0.66)

0.105

(2.67)

Ø 0.020

(0.50)

0.024

(0.61)

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