Metal Film Fixed Resistor
Description
Metal Film Fixed Resistor
Specifications:
Type Rated Power Max.
Working Voltage Max.
Overload Voltage Dielectric Withstanding Voltage Rated Ambient Temp Operating Temp.
Range Resistance Tolerance Resistance Range : MCMF : 0.
25W at 70°C : 250V : 500V : 500V : 70°C : -55°C to +155°C : ±1% : 10Ω to 1MΩ
Power Rating:
Resistors shall have a power rating based on continuous full load operation at an ambient temperature of 70°C.
For temperature in excess of 70°C, the load shall be derated as shown in the below figure.
Voltage Rating:
Resistors shall have a rated direct-current (DC) continuous working voltage or an approximate sine-wave root-mean-square (RMS) alternating-current (AC) continuous working voltage at commercialline frequency and waveform curresponding to the power rating , as determined from the following formula : RCWV = √P × R Were : RCWV = R ated DC or RMS AC continuous working voltage at commercial-line frequency and waveform (V) P = Power Rating (W) R = Nominal Resistance (Ω) In no case shall the rated DC or RMS AC continuous working voltage be greater than the applicable maximum value.
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Metal Film Fixed Resistor
Construction
No 1 2 3 4 5 6 7 Name Basic Body Resistance Film End Cap Lead Wire Joint Coating Colour Code Material Rod Type Ceramics Metal Film Steel (Tin plated iron surface) Annealed copper wire coated with tin By Welding Insulated epoxy resin ( Colour : Sky Blue ) Epoxy Resin
Metal Film Fixed Resistors
Characteristics DC.
resistance Limits Must be within the specified tolerance Test Methods( JIS C 5201-1 ) The limit of error of measuring apparatus shall not exceed allowable range or 1% of resistance tolerance Resistors shall be clamped in the trough of a 90° metallic V-block or foil method use a metal foil shall be wrapped closely around the body of the resistor.
After that shall be tested at DC potential respect...
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