FRN Series Flame-Proof Fusible Resistors MERITEK Superior quality fusible resistors, which are flameproof during operation These resistors fuse in less than 30 seconds at 16 times rated power PART NUMBERING S YSTEMS FRN 1W - 103 J TR Meritek Series Power Rating CODE ½W 0.5W 1WS 1W 1W 1W 2WS 2W 2W 2W Resistance First 2 digits are significant 3rd digit is multiplier “R” indicates decimal value below 10 ohm Tolerance Code J Tolerance (%) ±5 DERATING CURVE TR: Tape & Reel B: Bulk DIMENSIONS STYLE DIMENSIONS (mm) LIMITING ELEMENT VOLTAGE RESISTANCE RANGE Normal Miniature L D d Normal Miniature FRN1/4W FRN1/2WS 0.55±0.03 0.65±0.03 250V 4R7 ~1K FRN1WS 2.3 ±0.3 3.2 ±0.5 200V FRN1/2W 6.3 ±0.5 9.0 ±0.5 250V 300V 1 ~1K FRN1W FRN2WS 4.5 ±0.5 5.0 ±0.5 0.78±0.03 0.78±0.03 350V 1 ~1K FRN3WS 11.5 ±1.0 15.5 ±1.0 300V FRN2W 350V 400V 1 ~1K ELECTRICAL CHARACTERISTICS Temperature Coefficient Short time overload Insulation resistance FUSING C HARACTERISTICS ±350ppm ±(2%+0.05 ) Load life 1000M ±(5%+0.05 ) Terminal Strength Solder ability Dielectric withstanding voltage Operating temperature range Tolerance Tensile: 2.5kg 95% min overage 500V -40oC to +155oC ±5% Selection series Working voltage E-24 Specifications are subject to change without notice. P * R at 70oC rev.6a