Application Notes

1. If the resistors are to dissipate full rated power, it is recommended that the terminations should not be soldered closer than

4mm from the body.

2. Due to operating temperature limits imposed by some PCB materials, derating may be necessary. The surface temperature rise

at the centre of the body is shown under Thermal Performance.

3. WHS2, WHS3, WHS5 resistors can also be supplied with goalpost or lancet pre-formed leads. Hairpin form is available on WHS2 and

WHS3 only. For details see

https://www.ttelectronics.com/TTElectronics/media/ProductFiles/Application-Note/TN008-Resistors-Leadform-Capability.pdf

WHS2, WHS3, and WHS5 are also available in an SMD format with ZI formed leads and packed in blister tape. For details see

https://www.ttelectronics.com/TTElectronics/media/ProductFiles/Resistors/Datasheets/ZI-form.pdf

Thermal Performance

WHS10N

WHS10

WHS7

WHS5

WHS3

WHS2 / WHSP2R

Derating Curve

Body Temperature Rise

Ambient Temperature °C

Power (W)

WHS10(N)

WHS3

WHS5

WHS7

WHS10(N)

WHS2-7

WHS2 /

WHSP2R

WHS Series

Wirewound High Surge Resistors

10.24

General Note

TT Electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

© TT Electronics plc

www.ttelectronics.com/resistors

BI Technologies IRC Welwyn