聚变电阻器(FR)

Fusible resistor (FR) Specifications: TYPE Dimension (mm) Maximum Working Voltage Maximum Overload Voltage Insulation Resistance To Voltage Resistance Range L D H d ±0.05mm FR-1/2WSFR-1/4W 6.8±1.5 2.5±1.0 28.0±3 0.45 200V 600V 300V 1. 0Ω~10KΩFR-1WSFR-1/2W 9.5±1.5 3.7±1.0 28.0±3 0.55 250V 750V 350V FR-2WSFR-1W 12±1.5 5.0±1.0 35.0±3 0.70 250V 750V 350V FR-3WSFR-2W 16±1.5 5.5±1.0 35.0±3 0.75 250V 750V 500V Performance: Item Specification Value Test methods Temp Range -30ºC ~+155ºC - - - - (PPM/ºC) Temp Coefficient ±350 PPM/ºC MAX Resistance value at room temperature and room temperature +100°C. Incombustibility 1-16 Time E =√P X R ; 5 Min; Not flamed. - - - - Solderability 95% coverage minimum 235°C 2 seconds Dielectric Withstanding ±(0.5% + 0.05Ω)No mechanical damage V-block Insulation Resistance 500V MEG 200MΩ MIN V-block Short time overload ±(2.0% + 0.05Ω) 2.5 times rated voltage for 5 seconds soldering heat ±(1.0% + 0.05Ω) 350°C 3.5 seconds Moisture ±(5.0% + 0.05Ω) 40°C 90~95%RH 1000 hours Rated Voltage ±(5.0% + 0.05Ω) 70°C 1000 hours Pulse overload 10.000 cycles (1 second on; 25 seconds off) at 3 times RCWV. Remark: Standard type resistors insulation paint is grey color and miniature size type is pink color, with 4 or 5 color code, The fifth color code use white color.