Passive Components


Aluminium housed power wirewound resistors

5 November 2003 Passive Components

The Arcol HS style is a range of high quality, high stability aluminium housed power wirewound resistors designed for direct heatsink attachment. The resistive element is wound onto high thermal conductivity ceramic formers ground to a close toleranced finish ensuring maximum contact for rapid heat transfer. This element is encapsulated in the aluminium housing by a transfer moulding process which ensures a good humidity seal and a permanent compression fit. The encapsulant is a high temperature moulding compound and the special Arcol mould tool design ensures accurate concentricity of the resistive element inside the housing, giving a high level of voltage protection.

Arcol has much experience in the design and manufacture of this style of resistor and during this period has produced many different HS types to meet customers' special requirements. Arcol can advise on special designs for applications, be it high-voltage, short-term overload, or special mounting of terminations.



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