50 Series Economical Silicone Coated Wirewound FeatureS Automated winding, in-line color banding, and testing allow for an Rugged construction economically priced, industrial Optimized for Medium grade wirewound power resistor. to High volume pro- These resistors feature an all duction welded construction with a high Custom resistance purity alumina ceramic core and values can also be high quality RoHS grade tinned produced on request. copper wire instead of copper weld which produces better thermal characteristics. The 50 series accompanies Ohmite s wide range of axial leaded prod- ucts. SerieS SpeciFicationS Series Power at 25C Resistance Limiting Element Voltage 53J 3W 0R1 to 10K 150 55J 5W 0R1 to 20K 200 characteriSticS Test Condition Maximum R Temp. Coefficient 90 ppm/C for below 1.0 of Resistance 50 for 1.0 to 99 5X Rated power for 5 sec- <2% + 0R05 Short term overload onds (3W) 10X Rated power 30 for 100 and above for 5 seconds (5W) 53J 5X for 5 seconds Short Term Load life at rated power 1000 hours (1.5 Hrs ON, 0.5 <5% + 0R05 Overload 55J 10X for 5 seconds Hrs OFF cycle) Leads Tin Coated Copper Robustness of termination As per BS-CECC 40201-002 <1% + 0R05 Key to four-band code 123 4 Derating Band 1 2 3 4 Color Digit Multiplier Tolerance 100 Black 0 0 x 1 Brown 1 1 x 10 1% (F) 80 Red 2 2 x 100 2% (G) 60 Orange 3 3 x 1K 3% Yellow 4 4 x 10K 4% 40 Green 5 5 x 100K 20 Blue 6 6 Violet 7 7 0 0 2550 100 150 200 250 300 350 Grey 8 8 Ambient Temperature, C White 9 9 Gold x 0.1 5% (J) Silver x 0.01 10% (K) 6 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com % Rated Power50 Series Low Cost Silicone Coated Axial DimenSionS (mm) Type L nom D max* d nom *D max. will be 6mm max. for 53J L 38mm** D max. and 8.5mm for 55J for values less d 53J 141.5 5.6 0.800.05 0-3mm than or equal to 1R0. 55J 211.5 8 1.00.05 **When ordered on tape and reel, lead length will be 36mm 3 for 53J and 34mm 3 for 55J. orDerinG inFormation Standard Part Non-Inductive Tape & reel Winding 1000 per reel Numbers Optional (blank RoHS Modified 50 Series = std. winding) Compliant lead length 53JR10E 55JR10E 53JR50E 55JR50E 53J1R0E 55J1R0E 53NJR10E-TR 53J5R0E 55J5R0E 53J7R5E 55J7R5E Wattage Tolerance Resistance Value 53J10RE 55J10RE 3 or 5 watt J= 5% R10 = 0.10 1R0 = 1.0 53J25RE 55J25RE 10R = 10.0 53J50RE 55J50RE 250 = 250 53J75RE 55J75RE 1K0 = 1,000 53J100E 55J100E 7K5 = 7500 53J250E 55J250E 20K = 20000 53J500E 55J500E 53J750E 55J750E 53J1K0E 55J1K0E 53J2K0E 55J2K0E 53J5K0E 55J5K0E 53J10KE 55J10KE 55J20KE 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 7