The resistive element comprises a resistive film sputtered onto a ceramic element. Metal end caps are force fitted to the element prior to spiralling. Tinned copper lead wires are welded to the end caps and the components are then coated with four layers of a flameproof cement. All resistors are tested for value and tolerance. The technology allows the manufacture of custom fusible characteristics.

KEY FEATUREs
■ Superior quality resistors with fusing characteristics for overload conditions.
■ Flame-proof during fusing.
■ Ideal for use in safetycritical and circuit protection applications.
■ These resistors fuse in less than 60 seconds at 16 times rated power. (See table)