High pulse withstanding resistors are excellent choice for high stability and reliability

TT Electronics offers the HPWC (high pulse withstanding chip) range of high energy surge resistor products. The high pulse resistors are designed to maximise the level of surge performance available in single-sided flat chip design. The range is ideal for discharge and protection applications in power control circuits and compact power supplies where a resistance tolerance of 5% is required. The resistors are available in four sizes from 0805 to 2512 and are able to withstand up to 6.5kV peak for a 1.2/50us surge and up to 3kW for a 0.1ms pulse. The resistor is an evolution of the company’s pulse withstanding chip resistors but where the resistance value is altered by precise process control rather than by laser trimming. This method maximises and improves the level of surge performance available in single-sided flat chip design. Resistance values available are from 1R0 to 100K, and there are four sizes from 0805 to 2512, with ratings from 0.25 to 2W. These high energy chip resistors provide enhanced ability to absorb high energy surges. This attribute makes them ideal for circuit breakers, power supplies, motor drives and medical monitor input protection. The thick-film resistors are targeted at creators of compact SMD circuits in motion control, power conversion and protection applications in the medical and industrial markets.