Axiohm Centohm Coated Axial Terminal Wirewound F e At u r e s OptiOns Ohmites Axiohm resis- tors are Centohm coated Welded construction Noninductive: This specially for maximum reliability. designed version is wound using Inorganic and non-hygroscopic, These all-welded units the Ayrton-Perry method. Centohm coating seals and protects are characterized by their the resistance wire. Resistance Tolerances: Options low temperature coef- include 5%, 1%, 0.5%, 0.25%, and Exceeds MIL-R-26 moisture require- ficients and resistance to 0.1% resistors. ments thermal shock, making Terminal Sizes: Alternate terminal them ideal for a wide Centohm Resistors are designed to diameters available. range of electrical and meet and exceed performance charac- electronic applications. teristics of vitreous enamel resistors. Tape and Reel: Resistors taped for automatic insertion. Contact Ohmite Centohm is more cost effective than for size, quantity and ordering infor- vitreous enamel. mation 5% resistance tolerance series speciFicA tiOns Watt Resistance Standard Dielectric Maximum Rating Range () Resistance Withstanding Voltage Form Min. Max. Tolerance Voltage Rating 1C 0.1 4K 5% 500 100 2C 0.1 10K 5% 500 300 3C 0.1 20K 5% 500 450 4C 0.1 30K 5% 500 600 5C 0.1 40K 5% 500 800 7C 0.1 50K 5% 500 875 10C 0.1 90K 5% 500 1600 chArActeristics Coating Flameproof proprietary Centohm Core Ceramic Element Copper-nickel alloy or nickel-chrome alloy depending on resistance value Stainless steel End Cap Terminals Tinned Copper weld. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu Derating Linearly from 100% +25C to 0% +350C. Tolerance 5% (Std) down to 0.1% available. Based on 25C free air rating (other wattages available). Power rating Overload Under 5 watts: 5 times rated wattage for 5 seconds. 5 watts and over: 10 times rated wattage for 5 seconds. Temperature coefficient 30ppm /C above 10 100ppm/C 1 to 10 200ppm/C below 1 (continued) 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 91Axiohm Centohm Coated Axial Terminal Wirewound DimensiOns (in./mm) 1.5 in. / 38.1mm A B C D Watt C D max. Rating A B Wire Gauge clean term. to clean Form .063/1.60mm .031/0.79mm (dia.) term. in./mm 1C 0.313.031 / 7.95.79 0.094 / 2.39 24 (.020) 0.406 / 10.31 2C 0.375 / 9.53 0.219 / 5.56 20 (.032) 0.469 / 11.91 3C 0.5 / 12.7 0.219 / 5.56 20 (.032) 0.594 / 15.09 4C 0.688 / 17.48 0.219 / 5.56 20 (.032) 0.813 / 20.65 5C 0.938 / 23.83 0.219 / 5.56 20 (.032) 1.063 / 27.00 7C 1 / 25.4 0.313 / 7.95 20 (.032) 1.125 / 28.58 10C 1.563 / 39.7 0.313 / 7.95 20 (.032) 1.688 / 42.67 perFOrmAnce DAt A Test Maximum R values are maximums based on MIL-R-26 testing requirements at Temperature Coefficient 30ppm/C above 10 350C. 100ppm/C 1 to 10 200ppm/C below 1 Thermal Shock (2% + .05)R Short Time Overload (2% + .05)R (0.1% + .05)R Dielectric Low Temperature Storage (2% + .05)R High Temperature Exposure (2% + .05)R Moisture Resistance (2% + .05)R Shock (2% + .05)R (2% + .05)R Vibration Load Life (3% + .05)R Terminal Strength (1% + .05)R OrDerinG inFOrmA tiOn Non-Inductive Option (Add N) E = RoHS compliant Example: Std 3 watt, 10K 5% = 3CJ10K Wattage Coating Tolerance Resistance () for J = 5% (standard) use for 1000 Centohm H = 3% multiplier use F = 1% for decimal point D = .5% Q = .25% B = .1% 92 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com