PL IA NT Features RoHS compliant* CO M D2PAK housing *R oH S Low inductance Resistor electrically isolated from the Applications backplate High power rating Compatible with lead free solder reflow temperatures Power supplies Motor drives Test and measurement Rectifiers PWR263S-20 Series Power Resistor General Information Bourns(R) PWR263S-20 Series is a TO263 DPAK style power resistor manufactured using thick film on alumina ceramic technology and used in current measurement, snubber, bleeder and discharge circuits. Electrical & Thermal Characteristics Material Characteristics Parameter Resistance (See Popular Resistance Values table) Power Rating @ 25 C Case Temperature Tolerance TCR 0.02 Maximum of 20 seconds between 260 C peak +245 C and +260 C <1> 245 C 225 Temperature (C) 220 C 190 C 175 How to Order 60 - 90 seconds PWR 263 S - 20 - 10R0 F E Ramp Down 6 C/second 150 C 125 Model PWR = Power Resistor Package 263 = D2PAK 60 - 120 seconds 10 seconds minimum Pin Style S = Surface Mount 75 Ramp Up 3 C/second maximum Power 20 = 20 W 25 0 50 100 150 Time (seconds) 200 250 300 Power dissipation is 2.8 W at an ambient temperature of 25 C when mounted on a double-sided copper board using FR4 standard, 70 m of copper, 39 x 30 x 1.6 mm. Resistance Value <100 ohms ... "R" represents decimal point (examples: 7R50 = 7.5 ; R500 = 0.5 ) 100 ohms.... First three digits are significant, fourth digit represents number of zeros to follow (examples: 2000 = 200 ohms; 3002 = 30K ohms) Absolute Tolerance J=5% F=1% Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. Packaging E = Tape & Reel Blank = Tubes PWR263S-20 Series Power Resistor Pulse Power Rating Energy in Joules 100 10 1 0.1 0.01 10 - 7 10 - 6 10 - 5 10 -4 10 - 3 10 -2 10 -1 Overload Duration in Seconds The energy absorbed by the resistor expressed in Joules can be calculated by multiplying the peak power of the pulse in watts times the length of the pulse in seconds. The energy should not exceed the limits shown in the graph. The overload voltage should not exceed 1.5 times the maximum operating voltage. Packaging Specifications 5.3 (0.209) 0.38 0.20 (0.015 0.008) DIMENSIONS: TOLERANCE: 24.0 (0.945) 0.5 0.18 (0.020 0.007) 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 REV. 07/12 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. MM (INCHES) 0.38 UNLESS OTHERWISE NOTED (0.015)