WL Series Miniature Wirewound Current Sense F e at u r e s •Ultra-low ohmic value series for Current Sensing applications •Very low inductance (<1nH at 1MHz Test) •Miniaturized dimensions, Better power to dimension ratios •Use of the highest quality standard (96% Alumina) ceramic core •Manufacturing process–Wire winding/Spot Welding–by Computer Numerical Control (CNC) machine tools to ensure consistency of product quality. •Encapsulated by epoxy molding compound •Advanced IC encapsulation mold/die technologies SERIES S P ECI F ICATI O N S Type WLA WLB WLC WLD Power Rating (watts) 0.5 1 2 3 Resistance Range (Ω) 0.005-0.100 0.005-0.100 0.010-0.100 0.010-0.100 characteristics Derating Ceramic Core CeramTec Rubalit® 96% alumina End Caps Stainless steel, precision formed Resistance Wire CN49W alloy TC ±20ppm/°C Encapsulation SUMICON 1100/1200 Epoxy molding compound for IC encapsulation Standard Tolerance F (1.0%), J (5.0%) Temperature Coefficient ±300ppm/°C for ≤0.03Ω; ±100ppm/°C for ≥0.033Ω Percent Rated Power 100 Leads Copper wire, 100% Sn (Lead Free) coated 80 60 40 20 0 Maximum Working Voltage √PxR 0 25 50 75 100 125 150 175 Ambient Temperature, ϒC P ER F O R M A N CE D ATA Test Conditions Of Test Performance Thermal Shock Rated power applied until thermal stability, -55°C +0°C,-5°C,15min. ±2.0% 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 Dielectric Withstanding Voltage 500 Volts rms for 1W. 1 minute ±1.0% ±1.0% High Temperature Exposure Exposed to an ambient temperature of 275 +5/-0°C for 250 ±8 hours, Moisture Resistance MIL-STD-202 Method 106, 7b not applicable ±5.0% ±2.0% Low Temperature Storage Cold chamber at a temperature of -65 ±2°C for 24 ±4 hours Vibration, High Frequency Frequency varied 10 to 2000Hz, 200G peak, 2 directions 6 hours each Load Life 1000/2000 hours at rated power, +25°C, 1.5 hours “On”, 0.5 hours “Off” ±2.0% ±1.0% ±5.0% (continued) 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 49 WL Series Miniature Wirewound Current Sense d i m e n s i on s (in./mm) 0.984 / 25 L D Type Power Rating (watts) d WLA 0.5 WLC 2 WLB � � WLD L D d 5.08 / 0.200 2.54 / 0.100 0.60 / 0.024 1 7.00 / 0.276 3 13.54 / 0.530 11.4 / 0.450 3.30 / 0.130 4.57 / 0.180 5.50 / 0.216 o r d e r i n g i nfo r m a t i on Standard Part Numbers for WL Series RoHS compliant Wattage: Series: ����������� Series Power A = 0.5 B=1 C=2 0.5 WLA 0.005 0.01 0.015 0.02 WLAR005FE WLAR010FE WLAR015FE WLAR020FE WLAR025FE WLAR030FE WLAR050FE WLAR100FE Key to five-band code WLBR005FE WLBR010FE WLBR015FE WLBR020FE WLBR025FE WLBR030FE WLBR050FE WLBR100FE 1234 5 Band 1 2 3 4 5 Color Digit Multiplier Tolerance Black Brown Red Orange Yellow Green Blue Violet Grey White 0 0 0 x 1Ω 1 1 1 x 10Ω 2 2 2 x 100Ω ± ± 1% 2% 3 3 3 x 1KΩ (F) (G) 4 4 4 x 10KΩ 5 5 5 x 100KΩ 6 6 6 x 1MΩ 7 7 7 x 10MΩ 8 8 8 ± ± ± ± 0.5% (D) 0.25% (C) 0.10% (B) 0.05% 9 9 9 x 0.001Ω Gold Silver 2.0 WLC Ohms Ohms Tolerance Package F = 1% T = Tape J = 5% blank = 25pc Pack 0.025 0.03 0.05 0.10 50 1.0 WLB x 0.1Ω x 0.01Ω ± ± 5% 10% (J) (K) 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] WLCR010FE WLCR015FE WLCR020FE WLCR025FE WLCR030FE WLCR050FE WLCR100FE 0.60 / 0.024 0.80 / 0.031 0.80 / 0.031