For design engineers facing thermal cycling issues with power components in high-temperature environments, IRC has developed a "capped" version of its cylindrical power resistor that delivers thermal compliance and thermal isolation from circuit boards.  The SMC Series Metal Glaze resistors are available in ratings up to 2 watts.
 
Designed to solve the problem of thermal mismatch between FR4 PC boards and ceramic components. 
 
Applications include high power-density applications, such as underhood automotive control units, GFI control circuits, as well as any application where high thermal stress is present. Can be a potential cost saving replacement for bulky surface-mount wirewound devices.
 
Rated for 1 W at 70ºC, with resistance values from 0.1Ω to 1MΩ, in standard tolerances of ±1%, ±2% and ±5%, with TCRs as low as ±25ppm/ºC.  SMC2 Series resistors are rated for 2W at 25ºC, with resistance values from 0..2Ω to 2.2MΩ, in standard tolerances of ±1%, ±2% and ±5%, with TCRs as low as ±25ppm/ºC.   Operating temperature range is from -55° to +150°C.  All are RoHS compliant and suitable for high-temperature soldering processes.
 
Feature a MetalGlaze thick film element fired at 1,000ºC to a solid ceramic substrate and a high temperature dielectric coating that is impervious to degradation in high-moisture environments. 
 
IRC Wirewound and Film Technologies Division, www.irctt.com
           

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