general note irc reserves the right to make changes in product speci?cation without notice or liability. all information is subject to ircs own data and is considered accurate at time of going to print. a subsidiary of tt electronics plc ? 4222 south staples street ? corpus christi texas 78411 usa wire and film technologies division telephone: 361 992 7900 ? facsimile: 361 992 3377 ? website: www.irctt.com four-terminal current-sensing wirewound resistor electrical data 4lpw series ? tc = 40ppm/c ? 3 watts to 15 watts ? 0.005 ohm to 1.0 ohm ? 1%, 2, 3, 5, 10% tolerance irc type power @ 25c (watts) max. current (amps) resistance range (ohms) 4lpw-3 3 10 .005 to 1.0 4lpw-5 4lpw-7 5 7 10 20 .005 to 1.0 .01 to 1.0 4lpw-10 4lpw-15 10 15 20 20 .01 to 1.0 .01 to 1.0 please note: when ordering the alternate con?guration please add an "a" after the part number. (4lpw-3a) standard con?guration alternate con?guration dimensions (inches (mm)) irc type l .063 (1.6) w .03 (.8) h .03 (.8) s .062 (1.6) d diameter e .03 (.8) 4lpw-3 .88 (22.4) .31 (7.87) .31 (7.87) .563 (14.3) .036* (.9) .38 (9.65) 4lpw-5 .88 (22.4) .38 (9.65) .35 (8.89) .563 (14.3) .036* (.9) .41 (10.4) 4lpw-7 1.39 (35.3) .38 (9.65) .35 (8.89) 1.013 (25.7) .036* (.9) .47 (11.9) 4lpw-10 1.88 (47.8) .38 (9.65) .35 (8.89) 1.388 (35.3) .036* (.9) .47 (11.9) 4lpw-15 1.88 (47.8) .50 (12.7) .50 (12.7) 1.388 (35.3) .036* (.9) .63 (16.0) ty pe 4lpw l d 1.50 .062 (38.1 1.6 ) s d 1.0 (25.4) min. 1/8 max. w h e ty pe 4lpw -a 4lpw series issue october 2008 sheet 1 of 2 ??????????????? ????????????? ???????????????????????? ?????????????????????????
? 4222 south staples street ? corpus christi texas 78411 usa wire and film technologies division telephone: 361 992 7900 ? facsimile: 361 992 3377 ? website: www.irctt.com sample part no. irc type 4lpw power 3 = 3w, 5 = 5w, 7 = 7w, 10 = 10w, 15 = 15w resistance range expressed in ohms (standard eia/mil values) tolerance f = 1%, g = 2%, h = 3%, j = 5%, k = 10% ordering data 4lpw 15 r010 f four-terminal current-sensing wirewound resistor temperature rise chart power derating curve 250 200 150 100 50 0 0 20 40 60 80 100 120 percent rated load hot spot temperature (c) 4lpw-3 4lpw-5 4lpw-7 4lpw-15 4lpw-10 100 80 60 40 20 0 0 50 100 150 200 250 ambient temperature (c) percent rated load 4lpw-3, 5, 7, 10 4lpw-15 max. recommended ambient operating temperature 150c 4lpw series issue october 2008 sheet 2 of 2
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