POWER SOLUTIONS – WILLOW TECHNOLOGIES LTD Lead Free CURRENT DETECT CHIP RESISTORS, WSN1/2, WSN1, WSN2 Features and Applications Surface mounted, low resistance value, low profile, low inductance and large impulse durable molded metal plate current detect resistors. Rating 1/2W, 1W and 2W selectable for your applications. Tolerance +/-1% and TC100ppm/C standard. Current detection circuit for high speed CPU peripherals, battery charging current protections, DC-DC conversion modules, DC-AC conversion, servo-motor control electronics, intelligent power modules, etc. Dimensional Specifications (mm) B F C D G G Type A B C D E F G WSN1/2 5.0+/-0.3 2.5+/-0.3 1.27 2.0 4.7 1.1 1.2 WSN1 6.4+/-0.3 3.2+/-0.3 1.40 2.0 6.0 1.3 1.2 WSN2 8.3+/-0.3 4.0+/-0.3 1.40 3.0 8.0 1.3 1.2 Printing Marking is done by 3 digits resistance value. E A R001F Specification and Performances WSN1/2 WSN1 Resistance 0.003 to 0.05ohms 0.003 to 0.100ohms TCR +/-100ppm/C (A) Tolerance +/-1.0% (F) Rating Power 0.5W 1W Series Inductance 1nH 2nH Parallel Capacitance <0.1pF <0.1pF Operating Temp. -55 to +150 C -55 to +150 C Storage Temp. -55 C to 150 C -55 C to 150 C Tape package 5000 pcs/12mm 3000 pcs/12mm Note: Tape Packaging: Embossed carrier tape per EIA-481-1-2. WSN2 0.005 to 0.200ohms Remarks 2W 5nH <0.1pF -55 C to 150 C -55 C to 150 C 2000 pcs/16mm -55 to 70C /13” reel Willow Technologies Ltd. Shawlands Court Newchapel Road Lingfield Surrey RH7 6BL ENGLAND Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 Web. www.willow.co.uk E-mail. [email protected] Lead Free POWER SOLUTIONS - WILLOW TECHNOLOGIES LTD CURRENT DETECT CHIP RESISTORS, WSN1/2, WSN1, WSN2 Ordering Information Ordering P/N WSN1/2A0.001ohmFZ01 WSN1A0.002ohmFZ01 WSN2A0.100ohmFZ01 Type WSN1/2 WSN1 WSN2 TC A (100ppm) A (100ppm) A (100ppm) Resistance 3 m Ohms 3 m Ohms 100 m Ohms Tolerance F (1%) F (1%) F (1%) Additional Code Z01 tape Z01 tape Z01 tape Specifications Short Time Overload Withstanding Voltage Insulation Resistance Low Temperature Storage High Temperature Storage Heat Shock Solder ability Humidity Load Life Specifications +/-0.2% +/-0.1% >1000Mohms +/-0.5% +/-1.0% +/-0.2% >90% coverage +/-0.5% +/-0.5% Frequency Characteristics Conditions 5 times of rating watt, 5seconds. AC500V, 1 minuets -55C, 24 hours +275C, 2 hours -55C to +85C, 20min. interval, 5min. 5cycles 230C+/-5C for 5sec. 40C, 90-95%RH, dc0.1W, 1000 hours 25C, dc rated power, 90min ON, 30min OFF, 1000hours Temperature Rise, WSN1/2 Impedance(ohm) Temperature (C) at hot spot. 0.050 250 WSN1/2 200 150 0.010 WSN2A1mohmF 100 0.005 50 0.001 10k 0 100k 1M Frequency(Hz) 10M 0 0.4 0.8 1.2 1.6 Applied Power (W) 2.0 Derating Applied Power (% of rating) 70C 100 75 50 170C 25 0 -50 0 +50 +100 +150 Ambient Temperature (C). +200 20050212 Willow Technologies Ltd. Shawlands Court Newchapel Road Lingfield Surrey RH7 6BL ENGLAND Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 Web. www.willow.co.uk E-mail. [email protected]