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TT electronics IRC Wire and Film Technologies Division annouces a series of molded and conformally coated wirewound resistors and combination resistor/fuses. Designated the SP and SPP Series resistors, the product family consists of the SP20F (1-watt molded fusible resistor); the SPF Series (2-watt molded fusible resistor); the SP20 Series (1-watt molded general purpose resistor); and the SPH (2-watt general purpose molded resistor). The SPP Series are conformally coated, available in 1, 2 and 3 W power ratings. Standard resistance ranges from 0.1Ω to 2400Ω depending on wattage, with standard tolerances to ۯ% and 䔮%. The SP20/SP20F and SPH/SPF are constructed by winding a metal alloy resistance wire around a fiberglass core. End caps with welded leads are crimped to the wound core, then the units are encased in a molded phenolic shell. The SPP is similarly constructed, but uses a conformal silicone coating instead of a phenolic shell. The fusible versions feature a flame resistant coating.


TT electronics
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