PWR SERIES GENERAL PURPOSE STAND-UP POWER WIREWOUND RESISTOR * * * * * 3, 5, 7 and 10 watts 0.1 ohm to 18K ohm range Radial leads for PC mount TC's from 300 ppm/C to +5500 ppm/C Lead Free ROHS Compliant Construction Available Fireproof high temp. ceramic case with Inorganic fireproof encapsulant Alloy resistance wire on fiberglass substrate SPECIFICATIONS: - Power Rating: 3,5,7, and 10 watts - Resistance Range: 3 watt: 0.1 to 7.5K 7 watt 0.1 to 18K 5 watt: 0.1 to 8.5K 10 watt 0.18 to 18K - Tolerance: 5% and 10% (refer to PWRG for tolerances less than 5% pg. 129) - Flameproof inorganic construction - EIA RS-344, insulated fixed wirewound resistors DIMENSIONS (Inches and (mm)): IRC Type PWR-3 PWR-5 PWR-7 PWR-10 A 0.475 0.030 (12.0 0.8) 0.500 0.030 (12.7 0.8) 0.500 0.030 (12.7 0.8) 0.630 0.032 (16.0 0.81) C 1.00 0.030 (25.4 0.8) 1.00 0.030 (25.4 0.8) 1.50 0.032 (38.1 0.81) 1.39 0.032 (35.3 0.81) % Rated Load D 0.200 0.062 (5.08 1.6) 0.200 0.062 (5.08 1.6) 0.200 0.062 (5.08 1.6) 0.290 0.062 (7.4 1.6) HOT SPOT TEMPERATURE RISE AT 25C Hot Spot Temperature (C) POWER DERATING: B 0.320 0.030 (8.1 0.8) 0.350 0.030 (8.8 0.8) 0.350 0.030 (8.8 0.8) 0.510 0.032 (13.2 0.81) E 0.175 0.062 (4.44 1.6) 0.175 0.062 (4.44 1.6) 0.175 0.062 (4.44 1.6) 0.250 0.062 (6.4 1.6) LD 0.036 0.002 (0.91 0.05) 0.036 0.002 (0.91 0.05) 0.036 0.002 (0.91 0.05) 0.036 0.002 (0.91 0.05) HOW TO ORDER: Sample Part No.: PWR 10 12K 10% LF Type Power Range Tolerance % Rated Power 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. WIREWOUND AND FILM TECHNOLOGIES DIVISION 736 Greenway Road * Boone, North Carolina 28607-1860 * Tel: 828-264-8861 * Fax: 828-264-8866 * www.irctt.com A subsidiary of TT electronics plc Issue Preliminary 0106