ARCOL Resistors has extended its RWS range of SMD resistors – the range now covers 0.5W to 10W. The RWS family has been designed to meet the needs of the ever-increasing power requirements of resistors in surface mount applications. At 10W the RWS10 is one of the highest-power SMD resistor on the market today.
The thermal design has been optimised to provide a greater heat-reduction efficiency, resulting in a lower surface temperature-rise, when compared with other (lower power) SMD resistors on the market. They also feature excellent overload characteristics with a surge capacity of up to 5 times rated power for 5 seconds, ±(0.5% + 0.5mO) ?R.
The RWS is a family of compact, precision power resistors are manufactured to the highest standards; reliable and robust but still achieving a drift of less than 1% and TCR of 10-90ppm/ °C when under rated conditions.
The RWS resistors also have excellent stability and TCR characteristics: ±90ppm/°C R1 – R99, ±50ppm/°C 1R – 10R, ±20ppm/°C > 10R. The operating temperature range is -55°C to +275°C for the RWS7 and RWS10 versions, and -55°C to +155°C for the rest of the range. The maximum working voltage is (PxR) ½.
Low inductance versions are also available. The RWS Power Resistors are RoHS compliant, designed for easy assembly. The Life specifications have been measured at a Test temperature of 70°C ±2°C, with a rated DC continuous working voltage applied, 1.5 hours on and 0.5 hours off for 1000 hours, ±(2.0% +0.5mO)?R.
