Wire-wound resistors boast top thermal performance

Welwyn Components is offering a range of aluminium housed wire-wound resistors for electronic designs destined for use in severe environmental conditions.

Welwyn Components is offering a range of aluminium housed wire-wound resistors for electronic designs destined for use in severe environmental conditions.

They are suitable for heating applications - including external cash point machine keypads and essential inrush protection for industrial control circuits.

Designated the WH Series, the component has high power dissipation in relation to its size and is designed for direct heatsink attachment, offering excellent thermal performance.

Approved to CECC 40203-006, the high reliability WH series offers the engineer a fully load tested component.

It has the edge in surge protection over traditional aluminium housed products, as it is formed from a denser material giving it greater withstanding capability.

"Overall this product offers optimum stability and reliability for your circuit design issues today", comments, John Graham, Marketing and Sales Director for Welwyn.

The WH series offers four power ratings from 10 to 50W at 25C.

The resistance range is 0R01 to 120K and TCRs are 75, 50 and 25ppm/C.

Resistance tolerances are available from 1 to 10%.

Wire-wound resistors are capable of withstanding many multiples of their power rating for short term pulse and overload conditions.

For the WH Series, there is custom availability of either pulse withstanding or low inductive windings.

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