General Purpose Axial Leaded Power Wirewound Resistor Fireproof high temperature ceramic case- stand offs optional PW Series * * * * * Alloy resistance wire on fiberglass substrate 0.10 to 30K 2 watts to 25 watts 10% or 5% tolerance TC's from 300 ppm/C to +5500 ppm/C Lead free, RoHS compliant construction available Inorganic fireproof encapsulant Automatically clamped termination lead assembly Electrical Data Power Rating @ 25C (watts) Standard Resistance Range (ohms) PW-2 2 PW-3 IRC Type Standard Temperature Coefficient Special Temperature Coefficients +0.06%/C over R range +0.03%/C over R range +0.55%/C over R range +0.45%/C over R range +0.25%/C over R range 0.15 to 2.4K 0.15 to 0.99 1.0 to 2.4K 0.1 to 30 0.24 to 130 1.0 to 10 3 0.1 to 7.5K 0.1 to 0.99 1.0 to 7.5K 0.1 to 86 0.1 to 270 0.24 to 20 PW-5 5 0.1 to 8.5K 0.1 to 0.99 1.0 to 8.5K 0.1 to 68 0.1 to 300 0.27 to 22 PW-7 7 0.1 to 18K 0.1 to 0.99 1.0 to 18K 0.1 to 150 0.15 to 680 1.0 to 51 PW-10 10 0.18 to 30K 0.18 to 0.99 1.0 to 30K 0.1 to 240 0.24 to 1100 1.0 to 82 PW-15 15 0.18 to 30K 0.18 to 0.99 1.0 to 30K 0.1 to 240 0.24 to 1100 1.0 to 82 PW-18 18 0.18 to 22K 0.18 to 0.99 1.0 to 22K 0.1 to 200 0.24 to 1100 1.0 to 70 PW-22 22 0.27 to 18K 0.27 to 1.3 1.5 to 12K 0.15 to 360 0.36 to 1800 1.0 to 120 PW-25 25 0.27 to 18K 0.27 to 1.3 1.5 to 10K 0.15 to 300 0.36 to 1200 1.5 to 100 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 PW Series Issue December 2008 Sheet 1 of 3 General Purpose Axial Leaded Power Wirewound Resistor Physical Data Alternate Configuration Standard Configuration 0.125" Max. LL L E W D H F IRC L 0.03 (0.8) W 0.03 (0.8) H 0.03 (0.8) D Dia. 0.002 E 0.03 (0.8) LL min. F (ref.) PW-2 0.69 (17.5) 0.25 (6.35) 0.25 (6.35) 0.032 (0.8) 0.31 (7.87) 1.44 (36.6) 0.063 PW-3 0.88 (22.4) 0.31 (7.87) 0.31 (7.87) 0.036 (0.91) 0.38 (9.65) 1.44 (36.6) 0.063 PW-5 0.88 (22.4) 0.38 (9.65) 0.35 (8.89) 0.036 (0.91) 0.41 (10.4) 1.50 (38.1) 0.063 PW-7 1.39 (35.3) 0.38 (9.65) 0.35 (8.89) 0.036 (0.91) 0.47 (11.9) 1.50 (38.1) 0.125 PW-10 1.88 (47.8) 0.38 (9.65) 0.35 (8.89) 0.036 (0.91) 0.47 (11.9) 1.50 (38.1) 0.125 PW-15 1.88 (47.8) 0.50 (12.7) 0.50 (12.7) 0.036 (0.91) 0.63 (16.0) 1.50 (38.1) 0.125 PW-18 1.88 (47.8) 0.50 (12.7) 0.50 (12.7) 0.036 (0.91) 0.63 (16.0) 1.50 (38.1) 0.125 PW-22 2.50 (63.5) 0.50 (12.7) 0.50 (12.7) 0.040 (1.0)* 0.63 (16.0) 1.50 (38.1) 0.125 PW-25 2.50 (63.5) 0.50 (12.7) 0.50 (12.7) 0.040 (1.0)* 0.63 (16.0) 1.50 (38.1) 0.125 Type * Copper Clad Steel 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 PW Series Issue December 2008 Sheet 2 of 3 General Purpose Axial Leaded Power Wirewound Resistor Power Derating Curve 300 PW - 22, 25 250 PW - 15, 18 200 PW - 10 PW - 7 PW - 5 150 PW - 3 100 50 0 0 20 40 60 80 100 25 40 100 85 PW - 2 Percent of Rated Load Temperature Rise (C) Temperature Rise Chart 80 PW - 3, 5, 7, 10 60 PW - 15, 18, 22, 25 40 20 0 120 0 Percent of Rated Load 50 100 150 200 Ambient Temperature 250 Ordering Data Sample Part No. PW15 1202 K LF IRC Type Resistance Value (standard EIA values) Tolerance J = 5%, K = 10% RoHS Indicator LF indicated 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 PW Series Issue December 2008 Sheet 3 of 3