The WCF Series Carbon Film Resistors are manufactured using mechanised high vacuum carbonising plants. This ensures a stable resistive film. The resistors are insulated with layers of light brown lacquer. The WCF series offer a wide range of power ratings (0.125 W, 0.25W, 0.4W, 0.5W, 1W, 2W & 3W) with a tolerance of ± 5%. and TCR ±1000 ppm/ºC.
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WIRE WOUND FUSIBLE RESISTORS
The WWF series wire wound fusible resistors are manufactured to perform as a regular resistor under normal conditions and as a fuse under excessive load. In WWF series, resistors up to 5W, the resistance value is colour 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.
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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.
THICK FILM CHIP RESISTORS
The CR series Thick Film Chip Resistors are manufactured by screening a metal glaze layer on a high grade ceramic body. The different resistance values are obtained by using different compositions of metal glaze. The end contacts are made to ensure optimum solderability. The resistive layer is then given a protective coating.
The CR series offer a wide range of power ratings from 1/20W to IW and are available in tolerance ranges of ± 1 % and ±5% % with insulation Resistance ≥ 1000MΩ. .Miniature size, excellent mechanical strength and electrical stability ensures reduced costs and enhances dependability.
WIRE WOUND FUSIBLE RESISTOR – HIGH SURGE IMMUNITY
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.
METAL FILM MELF RESISTORS
The WMF MELF series Metal Film MELF 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 lacquer. The WMF MELF series resistors are suitable for surface mount technologies.
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