New Industry Products

IRC Develops HSF Series Surge Resistors

August 10, 2004 by Jeff Shepard

The Wirewound and Film Technologies Division of IRC Inc. (Boone, NC) introduced a surface-mount, high-surge resistor for use in small motor control circuit designs in automotive and industrial applications. The High Surge Film (HSF) Series resistor is designed to handle a pattern of overloads within the circuit, and IRC has been selected to supply its HSF resistors to a Tier 1 automotive supplier.

The cylindrical design of the HSF resistor provides heat dissipation and high surge/pulse capability. The part can also serve as a replacement for surface-mount wirewound resistors, and is suitable for harsh environment applications where heat and vibration are of concern. The HSF Series features a MetalGlaze™ thick film element fired at 1,000 °:C to a solid ceramic substrate, and a high-temperature dielectric coating suited for harsh automotive and industrial applications. The HSF resistor is fully rated to 1 W at 70 °C with a maximum operating temperature of 150 °C.

Available in resistance ranges from 10 Ohms to 10 kiloohms with 10% tolerance, the part features TCRs of ±50 ppm/±C and ±100 ppm/°C. Pricing for the HSF resistors is from $0.14 to $0.16 each in 100,000-piece quantities with lead times from six to eight weeks.