CARBON FILM RESISTORS

The WWFHS series wire wound fusible high surge immune resistors are manufactured to perform as a regular resistor under normal conditions and as a fuse under excessive load. These fusible resistors have high surge voltage immunity. In WWFHS series, for resistors up to 5W, the resistance value is color coded with 3 bands plus a tolerance band. An additional white band indicates that the resistor is fusible. For resistors 6W and above, the value is printed on the resistor.

The WMF series Metal Film Resistors are manufactured using the latest Magnetron Vacuum Sputtering System. This ensures a very stable resistive medium having a very low temperature coefficient. The resistors are insulated with layers of light blue lacquer. The WMF series offer a wide range of power rating (0.125W, 0.25W, 0.40W, 0.50W, 1W, 2W & 3W), tolerances (0.1%, 0.5%, 1%, 2%, 5%) and TCRs (15, 25,50 & 100 ppm/ºC)

The WWHS series wire wound high surge immune resistors are manufactured using high quality resistance wires wound on ceramic substrates. The resistors are coated using layers of Flame Proof Silicon Epoxy with axial lead wires. These resistors have high surge voltage immunity. In WWHS series, for resistors up to 5W, the resistance value is color coded with 3 bands plus a tolerance band. An additional black band indicates that the resistor is wire wound. For resistors 6W and above, the value is printed on the resistor.

The WCSB/WCST/WCSV low ohm current sensing resistors are manufactured with high purity Ni-Cr/Cu-Ni element. These are ceramic encased resistors. WATTS offers these resistors ranging from 2mΩ to 50mΩ, having power rating from 2W to 10W.

• WCSB is axial type ceramic boat encased resistor.
• WCSV is vertical type ceramic boat encased resistor.
• WCST is axial type ceramic tube encased resistor.