TO-220 power resistors deliver thermal efficiency

A new TO220-style power resistor uses a highly reliable, economical copper thick film to provide design engineers with superior heat dissipation in a standard industry-recognised package.

Providing design engineers with superior heat dissipation in a standard industry-recognised package, TT Electronics Welwyn Components has introduced a TO220-style power resistor using a highly reliable, economical copper thick film.

The TFP Series, designed by US sister company IRC, are rugged resistors feature noninductive performance and low thermal resistance, making them ideal for a variety of industrial applications such as power supplies, industrial controls and automotive, where cost effective performance and reliability are paramount.

"The non-noble copper ink construction of the TFP Series resistor makes it an efficient alternative to other thick film leaded power resistors while maintaining the excellent thermal conductivity and heat dissipation necessary for demanding power applications", explained John Graham, Marketing and Sales Director for the TT Electronics Welwyn Components.

"With low resistance values at higher power ratings, TT's proprietary resistor element ensures design engineers the highest quality noninductive performance in an efficient package".

The TFP Series resistors offer resistance ranges from 0.010ohm to 1kohm with tolerances to +/-1%.

The thermal coefficient of resistance at 0.1-1kohm is +/- 100ppm/C.

These resistors are rated for 20W at 25C case temperatures and thermal resistance is 8.0C/W.

Operating temperatures range from -55 to +150C.

Constructed with proprietary thick-film copper conductors and alloy resistors on an alumina ceramic substrate, the TFP Series resistor features low thermal impedance for high power dissipation.

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