Features WL series Ultra-low ohmic value series for Current Sensing applications Miniature Wirewound Ver y low inductance (<1nH at 1MHz Test) Current Sense Miniaturized dimensions, Better power to dimen- sion ratios Use of the highest quality standard (96% Alumina) ceramic core Manufacturing processWire winding/Spot Weldingby Computer Numerical Control (CNC) machine tools to ensure consistency of product quality. Encapsulated by epoxy molding compound Advanced IC encapsulation mold/die technologies series sPeciFicatiONs Type Power Rating (watts) Resistance Range () WLA 0.5 0.005-0.100 WLB 1 0.005-0.100 WLC 2 0.010-0.100 characteristics Ceramic Core CeramTec Rubalit 96% alumina Derating End Caps Stainless steel, precision formed 100 Copper wire, 100% Sn (Lead Free) coated Leads 80 Resistance Wire CN49W alloy TC 20ppm/C 60 Encapsulation SUMICON 1100/1200 Epoxy molding compound for IC encapsulation 40 Standard Tolerance F (1.0%), J (5.0%) 20 Temperature Coefficient 300ppm/C for 0.03 100ppm/C for 0.033 0 0 25 50 75 100 125 150 175 PxR Maximum Working Voltage Ambient Temperature, C PerFOrMaNce Data Test Conditions Of Test Performance Rated power applied until thermal stability, -55C +0C,-5C,15min. 2.0% Thermal Shock Short-time Overload 5 times rated wattage for 5 seconds 2.0% Solderability Method 208 of MIL-STD-202 2.0% Terminal Strength Pull test:10 pounds, 5 to10 seconds, Twist test: 1080, 5 second/rotation 1.0% Dielectric Withstanding Voltage 500 Volts rms for 1W. 1 minute 1.0% Exposed to an ambient temperature of 275 +5/-0C for 250 8 hours, 5.0% High Temperature Exposure Moisture Resistance MIL-STD-202 Method 106, 7b not applicable 2.0% Low Temperature Storage Cold chamber at a temperature of -65 2C for 24 4 hours 2.0% Vibration, High Frequency Frequency varied 10 to 2000Hz, 200G peak, 2 directions 6 hours each 1.0% Load Life 1000/2000 hours at rated power, +25C, 1.5 hours On, 0.5 hours Off 5.0% (continued) 50 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com Percent Rated PowerWL series Miniature Wirewound Current Sense DiMeNsiONs (in./mm) Type Power Rating (watts) L D d 0.984 / 25 LD WLA 0.5 5.08 / 0.200 2.54 / 0.100 0.60 / 0.024 d WLB 1 7.00 / 0.276 3.30 / 0.130 0.60 / 0.024 WLC 2 11.4 / 0.450 4.57 / 0.180 0.80 / 0.031 OrDeriNg iNFOrMatiON Standard Part Numbers for WL Series RoHS compliant Wattage: 0.5 1.0 2.0 Series: WLA WLB WLC Ohms Series Power Ohms Tolerance Package 0.005 WLAR005FET WLBR005FET A = 0.5 F = 1% T = Tape 0.01 WLAR010FET WLBR010FET WLCR010FET B = 1 J = 5% 0.015 WLAR015FET WLBR015FET WLCR015FET C = 2 0.02 WLAR020FET WLBR020FET WLCR020FET 0.025 WLAR025FET WLBR025FET WLCR025FET 0.03 WLAR030FET WLBR030FET WLCR030FET 0.05 WLAR050FET WLBR050FET WLCR050FET 0.10 WLAR100FET WLBR100FET WLCR100FET rev 9/20-1 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 51
