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On using precision resistor material (stainless steel layer), which has been vaporised onto the ceramic body in high vacuum, the highest accuracy of the given tolerances at good high frequency characteristics is reached. The desired resistance value is achieved through the etching or grating of the coils. METAL FOIL RESISTORS High Power Metal Foil resistors which offer low noise performance and have excellent high frequency characteristics. These resistors are highly recommended for use in amplification circuit and loudspeaker crossovers, as well as any other high power Electronic Circuits. Specifications: Construction/case style: TO 247Temperature coefficient: 50 ppm/'KOperating temperature range: -55°C- 125°CPower rating: 3W; with heatsink; 10WDimensions: 15mm X 4mm X 22mmVoltage rating: 500VInsulation rating: 500VACResistance tolerance: 1%Available values: 0.22 - 47 OhmsSpecial features: Non-inductive & non-magnetic construction Technical Data: Rated power: 2W Working voltage: 500V Resistance tolerance: 1% Available values: 0.22 - 47 Ohms Non-inductive design Maximum short-term overload: 1000V Connecting leads: Tinned copper; Length = 30mm; wire diameter = 0.8mm Resistor body dimensions: Length = 16mm; diameter = 6.0mm