RN 1/4W 510K F T/B A1

RN series PRECISION METAL FILM RESISTORS Features 1. Low T.C. 25ppm 50ppm 100ppm. 2. High precision 0.25% 0.5% 1% 5%. 3. Temperature stable, low noise, good reliability. 4. 0.1% / 25ppm case by case. 1. 2. 3. 4. 25ppm 0.25% 50ppm 0.5% 100ppm 1% 5% 0.1% / 25ppm ELECTRICAL AND MECHANICAL PERFORMANCE Characteristics Resistance Tolerance Resistance Temp. Coeff. Power Rating Load Short Time Overload Dielectric Withstanding Voltage Insulation Resistance Terminal Strength Test Methods Standards 1% ( F ) or - 0.5% ( D ) 25 ppm / 100 ppm / 50 ppm / Surface temp. 175 Max. 175 , R/R 1% -65 ~ 175 Rated voltage for 30 minutes / 30 2.5 times of rated valtage for 5 seconds. 2.5 /5 0.5% No evidence of mechanical damage or insulation breakdown. 10,000MÙ Max. Overload Voltage for 1 min. 1 ( RN 1 W & 1 WL AC 350V RN 1/4 WS AC 300V ) DC 100V or 500V megger No evidence of mechanical damage. Minimum 95% coverage 95% No evidence of mechanical damage. Resistance to Soldering Heat , R/R 1% Solder-ability 1 kg 235 5 for 2 seconds 270 5 for 10 1 seconds 350 10 for 3.5 0.5 seconds ENVIRONMENTAL CHARACTERISTICS Characteristics Standards Temp. Cycle R/R 0.25% Load Life R/R 2% Moisture-proof Load Life R/R 1.5% Nonflammability Reference Standards IEC 60115-1 JIS C 5201-1 not flamed 21 Test Methods -65 ( 30 min.) Room Temp.( 3 min.) +175 ( 30 min.) Room Temp.( 3 min.) / ( 5 cycles) Rated power load 90 minutes ON 30 minutes OFF 70 1000 hours Rated power load 90 minutes ON 30 minutes OFF 40 95% RH 1000 hours 16 times of rated wattage for 5 min. (RN 1W & RN 1WL) RN series Unit mm Dimensions Rated Wattage 1/8W 1/4WS 1/4W 1/2WS 0.6W 1/2W 1W 1WL d H L H D Resistance H 3 d 0.1 Range(Ù) 1.7 0.2 3.7max. 28 0.45 10~1M 0.45 1.7 0.2 3.7max. 28 10~1M 28 0.6 2.4 0.5 6.4 10~2M 28 0.6 2.4 0.5 6.4 10~2M 28 0.6 2.4 0.5 6.4 10~2M 9 0.65 28 3.5 10~2M 11 0.8 28 4.5 10~2M 15 0.8 28 5.0 10~2M D 1 60 40 20 -40 0 40 80 120 140 160 175 Surface Temperature Rise (OC) Rated Load (%) 150 1WL 70 80 0 150V 200V 250V 300V 350V 350V 500V 500V Surface Temperature Rise For resistors operated in ambient temperatures above 70 , power rating must be derated in accordance with the curve below. -65 Max. Working Voltage Note: 1. To prevent electric corrosion, the resistance over 100KÙ should be limited at 50V. 2. Too low or too high ohmic values can be supplied only case by case. 3. Max. Overload Voltage is 2 times of Max. Working Voltage. 4. RN 1W & RN 1WL is coated by flameproof paint. Derating Curve 100 L 1 Ambient Temp. (OC) 100 1W 0.6W 1/2WS 1/2W 50 1/4WS 1/4W 1/8W 0 0 How to order 20 40 60 80 100 Rated Load (%) It is composed by Type, Rated Wattage, Nominal Resistance, Tolerance ,Temperature Coefficient and Package. e.g. RN a. 1/4W b. 10Ù c. F d. 50ppm e. T/B f. a. Type( ): Precision Metal Film Resistohrs are Called "RN". b. Rated Wattage( ) : Shown by "W", such as 1/8W,1/4WS, 1/4W,1/2WS,0.6W,1/2W,1W,1WL. c. Nominal Resistance( ) : 10Ù. d. Tolerance( ): 0.5%(D), 1%(F) . e. Temperature Coefficient ( ): 25ppm/OC, 50ppm/OC, Nil f . Package ( ): T/R tape & reel ( ); T/B tape in box( ); Nil Bulk( ). 22 100ppm/OC