Semi-Precision Power Wirewound Resistor for Pulse & Surge Applications Alloy wirewound element Inorganic fireproof encapsulant PPW Series All welded construction • ±20 ppm/°C TCR • 2 watts to 15 watts • 0.10 ohms to 5000 ohms Flameproof ceramic housing • ±3%, ±2%, or ±1% tolerance Heat conducting ceramic substrate Electrical Data IRC Type Power @ 25°C (watts) Resistance Range (ohms) PPW-2 2 .01 TO 1600 PPW-3 3 .01 TO 1600 PPW-5 5 .01 TO 3300 PPW-7 7 .01 TO 2500 PPW-10 10 .01 TO 5000 PPW-15 15 .01 TO 5000 Please note: When ordering the alternate configuration please add an "A" after the part number. (PPW-3A) Lightning Surge Capabilities for PPW-2 1000V 600V 500V 300V 1000 2000 1000 3000 2000 3000 600 Volts 10 x 1000µsec 1000 Volts 10 x 360µsec Resistance Range 10 x 1000* 10 x 360* 1 TO 9.9Ω 250V 650V 10 TO 29.9Ω 500V 850V 30 TO 99Ω 600V 1000V 100 TO 1600Ω 1000V 1500V *10 microseconds - Maximum rise time to peak voltage. 360 or 1000 microseconds - minimum decay time to one half peak. General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of going to print. Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com A subsidiary of TT electronics plc PPW Series Issue May 2009 Sheet 1 of 3 Semi-Precision Power Wirewound Resistor for Pulse & Surge Applications Standard Configuration Alternate Configuration 0.125” Max. 1.0” Min. L E W D H Dimensions (Inches (mm)) IRC Type L ±.03 (.8) W ±.03 (.8) H ±.03 (.8) D - Diameter E ±.03 (.8) PPW-2 .69 (17.05) .275 (6.99) .275 (6.99) .032 (0.8) .32 (8.134) PPW-3 .88 (22.3) .310 (7.87) .310 (7.87) .032 (0.8) .38 (9.65) PPW-5 .88 (22.3) .380 (9.65) .350 (8.89) .032 (0.8) .41 (10.4) PPW-7 1.39 (35.3) .380 (9.65) .350 (8.89) .032 (0.8) .47 (11.9) PPW-10 1.88 (47.7) .380 (9.65) .350 (8.89) .032 (0.8) .47 (11.9) PPW-15 1.88 (47.7) .500 (12.7) .500 (12.7) .032 (0.8) .50 (12.7) Temperature Rise Chart Hot Spot Temperature (°C) 250 PPW-15 200 PPW-10 150 PPW-5 PPW-7 PPW-3 100 PPW-2 50 0 0 20 40 60 80 100 120 Percent Rated Load Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com PPW Series Issue May 2009 Sheet 2 of 3 Semi-Precision Power Wirewound Resistor for Pulse & Surge Applications Power Derating Curve 25 40 100 Percent Rated Load PPW-2 80 PPW-3, 5, 7, 10 PLO-15 60 40 Max. Recommended Ambient Operating Temperature 150°C 20 0 0 50 100 150 200 250 Ambient Temperature (°C) Ordering Data Sample Part No. PPW 10 15R0 G LF IRC Type PPW Power 10 = 10 watts (see specification chart for other power ratings) Resistance Value Expressed in ohms (Standard EIA/MIL values) Tolerance H = ±3%, G = ±2%, F = ±1% standard RoHS Indicator LF indicates RoHS compliance Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com PPW Series Issue May 2009 Sheet 3 of 3