Thick-film 0612 and 1020 chip resistors offer four times the power dissipation

Vishay has extended its RCWE series of thick film surface-mount wrap-around chip resistors with new devices in the 0612 and 1020 case sizes. Featuring long side terminations, the RCWE0612 and RCWE1020 provide four times the power dissipation of standard devices in equivalent 1206 and 2010 footprints, saving space and reducing 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. The AEC-Q200-qualified devices offer extremely low resistance values from 0.01ohm to 0.976ohm, tolerance down to ±1%, and TCR of ±100ppm/C, ±200ppm/C, and ± 300ppm/C. They are optimized 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, says the company.