IA NT Features CO M PL ■ *R oH S ■ ■ Applications Low TCR (75 ppm/°C) High current capability Ultra low resistance values ■ ■ ■ Power supplies Motor drives Electricity metering PWR3920 S Series Power Resistor Electrical Characteristics Parameter General Information Value Unit 0.2, 0.3, 0.5, 1.0, 2.0. 3.0, 4.0 milliohms Power Rating @ 70 °C 3.0 W Tolerance 1, 5 % Temperature Coefficient (TCR) ±75 PPM/°C -65 to +170 °C Resistance Range Operating Temperature Maximum Operating Voltage The Bourns® PWR3920 Series is a surface mount shunt resistor offering up to 3 W of power and very low resistance values as well as excellent TCR characteristics. It is designed for applications such as motor drives and power supplies. √PxR Environmental Characteristics Description Method Limit (∆R) 5 x Rated Power for 5 Seconds ± (1.0 % +0.0005 Ω) 1000 Hours at + 175 °C ± (1.0 % +0.0005 Ω) Frequency varied 10 to 2000 Hz in 1 Minute, 3 Directions, 12 Hours ± (0.5 % +0.0005 Ω) 100 g for 6 Milliseconds, 5 Pulses ± (0.5 % +0.0005 Ω) 1000 Hours at + 70 °C, 1.5 Hours “ON”, 0.5 Hours “OFF” ± (0.5 % +0.0005 Ω) +85 °C, 85 % RH, 10 % Bias, 1000 Hours ± (0.5 % +0.0005 Ω) Resistance to Solder Heat + 260 °C Solder, 10 - 12 Second Dwell, 25 mm/Second ± (0.5 % +0.0005 Ω) Low Temperature Storage -65 °C for 45 Minutes ± (0.5 % +0.0005 Ω) √(PxR) for 1000 Hours, 1.5 Hours “ON”, 0.5 Hours “OFF” ± (1.0 % +0.0005 Ω) MIL-STD-202, Method 106, 0 % Power, 7a and 7b Not Required ± (0.5 % +0.0005 Ω) 260 °C for 10 Seconds ± (0.5 % +0.0005 Ω) 1000 Cycles from -55 °C to +150 °C, 15 Minutes at Temperature ± (0.5 % +0.0005 Ω) Short Time Overload High Temperature Storage Vibration Mechanical Shock Load Life Bias Humidity Load Life Moisture Resistance Resistance to Soldering Heat Thermal Shock *RoHS Directive 2002/95/EC Jan 27 2003, including Annex Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. PWR3920 S Series Power Resistor Product Dimensions 10.0 ± 0.254 (0.394 ± 0.010) Solder Pads 5.20 ± 0.254 (0.205 ± 0.010) 6.20 ± 0.254 (0.244 ± 0.010) 0.5 (0.020) 2.00 ± 0.010 (0.079 ± 0.254) 2.70 ± 0.254 (0.106 ± 0.010) 5.60 ± 0.13 (0.220 ± 0.005) DIMENSIONS = MILLIMETERS (INCHES) How to Order Packaging Specifications PWR 3920 - 2 S B R0040 J E Model PWR = Power Resistor Tape ..........................................................16 mm/Embossed Plastic Reel ..............................................................330 mm/13 in. diameter Pieces per Reel ..........................................................................3000 Package 3920 = 0.39 x 0.20 inches Number of Terminals 2=2 Function S = Shunt Version Resistor Value R (4 Digits) Absolute Tolerance J=5% F=1% Packaging E = Tape & Reel ___ = Bulk Reliable Electronic Solutions Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 • Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700 www.bourns.com COPYRIGHT© 2005, BOURNS, INC. LITHO IN U.S.A. PWR3920 S 12/05 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.