UK based ARCOL Resistors, a long established specialist in resistor technology, is now offering the RWS range of compact precision power wirewound SMD resistors, the highest power SMD resistor design currently commercially available.
Designed to meet rising power requirements for surface mount components, its optimised thermal design is targeted to give greater efficiency and improved surge capacity of up to 5 times for 5 seconds, whilst reducing surface temperature rise compared with other resistors. The RWS range provides enhanced overload characteristics, good stability, low standard TCR and low inductance and custom versions are available if required.
The RWS series of resistors are wirewound, constructed on an alumina core with steel end caps. The body is an encapsulated epoxy moulded compound with thermo conductivity contours.
Typical applications include shunt resistors, power supply current sense, capacitor discharge and bleeder resistors.
The RWS series offers high reliability and has been engineered to reduce long term thermal damage to printed circuit boards and surrounding components. RWS series resistors are RoHS compliant and available in low inductance format and with close TCR and standard tolerance of 0.5%, 1% and 5%. The operating temperature range is – 55°C to +155°C or + 275°C depending on model.
Tony Daly, Sales Manager of ARCOL Resistors, comments; “OEMs increasingly need to automate manufacturing and our RWS range of high power resistors offer previously unavailable SMD assembly of these components, reducing manufacturing time and costs.”