Thick-film resistors protect against transients

Edited by the Electronicstalk editorial team Sep 9, 2004

A range of thick-film, noninductive surge/pulse chip resistors with a continuous power rating of 1W is available from TT Electronics BI Technologies.

A range of thick-film, noninductive surge/pulse chip resistors with a continuous power rating of 1W is available from TT Electronics BI Technologies.

Designed to protect circuit components against high-voltage transients caused by incidents such as lightning strikes and power faults, these BSR resistors are produced in a standard 2512 package.

In addition to protecting communications equipment, they are ideal for use in a wide range of pulse applications including solid-state switch snubber circuits and inrush current limiting and capacitor charge/discharge circuits such as MOSFET and IGBT gate drives.

The BSR is also available in a 2W version.

The resistors use a unique laser trim method that provides a tight resistance tolerance while maximising pulse handling capability.

Resistance values range from 0.050ohm to 10kohm with 1, 2, 5 and 10% resistance tolerance options.

Other features include a typical temperature coefficient of resistance of +/-100ppm/C for values above 10ohm.

Operating temperature range is -55 to +125C.