PPW SERIES SEMI-PRECISION POWER WIREWOUND RESISTOR FOR PULSE & SURGE APPLICATIONS Allow wirewound element Inorganic fireproof encapsulant 2 watts to 15 watts 0.10 ohms to 5000 ohms 3%, 2%, or 1% tolerance 20 ppm/C TCR Lead Free, ROHS Compliant Construction * * * * * All welded construction Flameproof ceramic housing Heat conducting ceramic substrate SPECIFICATIONS: LIGHTING SURGE CAPABILITIES FOR PPW-2: Power at 25C Resistance (watts) 2 3 5 7 10 15 Range (ohms) 0.1 to 1600 0.1 to 1600 0.1 to 1600 0.1 to 2500 0.1 to 5000 0.1 to 5000 IRC Type PPW-2 PPW-3 PPW-5 PPW-7 PPW-10 PPW-15 Resistive Range 10 x 1000* 1 to 9.9 250V 10 to 29.9 500V 30 to 99 600V 100 to 1600 1000V 10 X 360* 650V 850V 1000V 1500V *10 microseconds - Maximum rise time to peak voltage. 360 or 1000 microseconds - minimum decay time to one half peak. Please note: When ordering the alternate configuration please add an 'A' after the part number. (i.e., PPW-3A) DIMENSIONS (Inches and (mm)): Standard Configuration IRC Type PPW-2 PPW-3 PPW-5 PPW-7 PPW-10 PPW-15 Alternate Configuration L 0.03 (0.8) 0.69 (17.05) 0.88 (22.3) 0.88 (22.3) 1.39 (35.3) 1.88 (47.7) 1.88 (47.7) W 0.03 (0.8) 0.275 (6.99) 0.310 (7.87) 0.380 (9.65) 0.380 (9.65) 0.380 (9.65) 0.500 (12.7) H 0.03 (0.8) 0.275 (6.99) 0.310 (7.87) 0.350 (8.89) 0.350 (8.89) 0.350 (8.89) 0.500 (12.7) D Diameter 0.032 (0.8) 0.032 (0.8) 0.032 (0.8) 0.032 (0.8) 0.032 (0.8) 0.032 (0.8) E 0.03 (0.8) 0.32 (8.134) 0.38 (9.65) 0.41 (10.4) 0.47 (11.9) 0.47 (11.9) 0.50 (12.7) HOW TO ORDER: TEMPERATURE RISE: POWER DERATING: PPW 10 15 2% LF Power % Rated Load Hot Spot Temperature Type 10 = 10 watts Resistance Value Expressed in ohms (Std. EIA/MIL Values) Tolerance 3%, 2%, 1% std. % Rated Load Ambient Temperature Lead Free Construction 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. (c) IRC, Inc. Corpus Christi TX 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Email: afdsales@irctt.com * Website: www. irctt.com A subsidiary of TT electronics plc Issue Preliminary 0106