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Thick film chip resistors offer remarkable power dissipation

27 Apr 2015

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Vishay Intertechnology Inc. has expanded its RCWE series of thick film surface-mount wraparound chip resistors with additional devices in the 0612 and 1020 case sizes. The Vishay Dale RCWE0612 and RCWE1020 feature long side terminations, and claim to offer four times the power dissipation of standard devices in equivalent 1206 and 2010 footprints, saving space and minimising component counts in telecommunications, computer, industrial and consumer applications.

The long side terminations of the RCWE0612 and RCWE1020 provide a shorter path for heat dissipation to the PCB, allowing them to provide enhanced power ratings to 1W and 2W, respectively. In addition, their construction reduces the coefficient of thermal expansion (CTE) mismatch with the PCB, which increases reliability by reducing the possibility of solder joint cracks resulting from thermal cycles.

Vishay Dale RCWE0612, RCWE1020

The AEC-Q200-qualified devices offer extremely low resistance values from 0.01Ω to 0.976Ω, tolerance down to ±1 per cent, and TCR of ±100ppm/°C, ±200ppm/°C and ±300ppm/°C. They are optimised as current sensing resistors and shunts in DC/DC converters, voltage regulation modules and inverters in cell phones, computers, disc driver motor controls, air conditioners and heat pumps.

Samples and production quantities of the RCWE0612 and RCWE1020 are available with lead times of six to eight weeks for large orders.

Datasheets: (RCWE)

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