Compact chip resistor handles high-energy pulses

The DSC chip resistor combines excellent power handling capabilities with good pulse withstanding performance and is available in standard chip sizes 1206, 2010 and 2512.

Design engineers facing space restrictions and other high-energy pulse requirements in the manufacture of circuit breakers, power supply units and line protection devices are benefiting from the diversity, flexibility and versatility of a new chip resistor developed by TT Electronics Welwyn Components.

The DSC series is a high-energy chip which offers circuit protection and inrush limiting performance for applications including circuit breaker inrush protection, portable defibrillator input protection and vacuum cleaner control circuits.

Offering the performance of wirewound technology with the convenience and size of a thick-film chip it combines excellent power handling capabilities with good pulse withstanding performance and is available in standard chip sizes 1206, 2010 and 2512.

Conventional chip resistors conduct current on one face only and have lateral trimming cuts which cause current crowding.

This results in unreliable pulse performance, which can vary from batch to batch.

The DSC provides enhanced pulse performance because the construction spreads the current flow evenly over both faces of the chip.

A special trim technique is used which avoids generating "hot spots".

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