WL Series Miniature Wirewound Current Sense 0.984 / 25 L � Type WLA WLB WLC Power Resistance Rating Range (watts) (Ω) 0.5 0.005-0.100 1 0.005-0.100 2 0.010-0.100 D d � Dim. L (mm/in) 5.08 / 0.200 7.00 / 0.276 11.4 / 0.450 Dim. D (mm/in) 2.54 / 0.100 3.00 / 0.120 6.86 / 0.270 Dim. d (mm/in) 0.60 / 0.024 0.60 / 0.024 0.80 / 0.031 FEATURES SPECIFICATIONS • 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 Material Ceramic Core: CeramTec Rubalit® 96% alumina End Caps: Stainless steel, precision formed Leads: Copper wire, 100% Sn (Lead Free) coated CN49W alloy resistance wire TC ±20ppm/°C Encapsulation: SUMICON 1100/ 1200 Epoxy molding compound for IC encapsulation DERATING Test Thermal Shock Conditions Of Test Rated power applied until thermal stability, -55°C +0°C,-5°C,15min. 5 times rated wattage for 5 seconds Method 208 of MIL-STD-202 Pull test:10 pounds, 5 to10 seconds, Twist test: 1080°,5 second/rotation 500 Volts rms for 1W. 1 minute Short-time Overload Solderability Terminal Strength Dielectric Withstanding Voltage High Temperature Exposed to an ambient temperature of 275 Exposure +5/-0°C for 250 ±8 hours, Moisture Resistance MIL-STD-202 Method 106, 7b not applicable Low Temperature Cold chamber at a temperature of -65 Storage ±2°C for 24 ±4 hours Vibration, High Frequency varied 10 to 2000Hz, 200G Frequency peak, 2 directions 6 hours each Load Life 1000/2000 hours at rated power, +25°C, 1.5 hours “On”, 0.5 hours “Off” O R D E R I N G I N F O R M AT I O N RoHS compliant ±2.0% ±2.0% ±1.0% ±1.0% 80 60 40 20 0 0 ±5.0% ±2.0% ±2.0% ±1.0% ±5.0% 25 50 75 100 125 150 175 Ambient Temperature, °C S TA N D A R D PA RT N U M B E R S F O R W L S E R I E S Wattage: Series: 0.5 WLA 1.0 WLB 2.0 WLC 0.005 0.01 0.015 0.02 WLAR005FE WLAR01FE WLAR015FE WLAR02FE WLBR005FE WLBR01FE WLBR015FE WLBR02FE WLCR01FE WLCR015FE WLCR02FE 0.025 0.03 0.05 0.10 WLAR025FE WLAR03FE WLAR05FE WLAR10FE WLBR025FE WLBR03FE WLBR05FE WLBR10FE WLCR025FE WLCR03FE WLCR05FE WLCR10FE Ohms Check product availability at www.ohmite.com ����������� Series Power A = 0.5 B=1 C=2 Performance ±2.0% 100 Percent Rated Power PERFORMANCE CHARACTERISTICS Electrical Standard Tolerance: F (1.0%), J (5.0%) Temperature Coefficient (ppm/°C): ±300ppm/°C for ≤0.03Ω ±100ppm/°C for ≥0.033Ω Maximum Working Voltage: √PxR Ohms Tolerance Package T = Tape F = 1% J = 5% blank = 25pc Pack KEY TO FIVE-BAND CODE ���� � 14 Band 1 Color 2 3 Digit 4 5 Multiplier Tolerance Black 0 0 0 x 1Ω Brown 1 1 1 x 10Ω ± 1% (F) Red 2 2 2 x 100Ω ± 2% (G) Orange 3 3 3 x 1KΩ Yellow 4 4 4 x 10KΩ Green 5 5 5 x 100KΩ ± 0.5% (D) Blue 6 6 6 x 1MΩ ± 0.25% (C) Violet 7 7 7 x 10MΩ ± 0.10% (B) Grey 8 8 8 White 9 9 9 To see the latest in resistor technology click on the “What’s New” tab at ohmite.com ± 0.05% x 0.001Ω Gold x 0.1Ω ± 5% (J) Silver x 0.01Ω ± 10% (K) Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]