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| Low Cost Semi-Precision Power Wirewound Resistor LAS Series * * * * * * 1 and 3 watts 0.1 ohm to 18K ohms Color band identification 5%, 3%, 1%, .5% tolerance Resistance wire TCR 20 ppm/C RoHS-compliant version available Electrical Data IRC Type LAS-1 LAS-3 Power Rating 275C Max. Hot Spot 125C 1 2 25C 2 3 Commercial Range (ohms) Min. 0.1 0.1 Max. 7.5K 18K Non-Inductive Range (ohms) Min. 0.1 0.2 Max. 3.8K 7.5K Available Resistance (ohms) 0.5%, 1% 1 - 7.5K 1 - 18K 3%, 5% 0.1 - 7.5K 0.1 - 18K Environmental Data Test Condition (@ 25C) Load Life 1000 hours Moisture Resistance Temperature Cycle Short Time Overload Low Temperature Operation Solder Heat Shock Vibration LAS-3 Carbon Comp Replacement (contact factory) The LAS-3 is a three watt conformal coated precision wirewound resistor. The resistance wire is welded to the end caps and wound on alumina rod for good thermal conductivity. In circuit applications that utilize two watt carbon comp resistors the LAS-3 is an idead effective replacement. The LAS-3 5.6 ohm can be specifically designed to withstand 22 jooules of energy delivered by a 1000 volt 10 x 1000 usec wave shape pulse. LIGHTNING SURGE Special LAS-3 5.6 ohm to 100 ohm will meet Telecom GR-1089 lightning requirements. * * * * V = 1000 volts T1 = 10 usec rise T2 = 1000 usec to V2 10 ohm output impedance V Max R 1.0% 1.0% 0.5% 0.5% 0.5% 0.25% 0.5% 0.5% V2 0 T1 MICROSECONDS 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. T2 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 LAS Series Issue October 2008 Sheet 1 of 3 Low Cost Semi-Precision Power Wirewound Resistor Physical Data B E A D C Dimensions (Inches (mm)) IRC Type LAS-1 LAS-3 A 0.032 0.348 (8.84) 0.491 (12.47) B (max) 0.110 (2.80) 0.149 (3.80) C (max) 0.407 (10.34) 0.550 (13.99) D (Lead Diameter) 0.020 (0.53) 0.032 (0.81) E (Lead length Min) 1.475 (37.5) 1.35 (34.3) Hot Spot Temperature @ 25C 275 Hot Spot Temperature (C) 250 LAS3 Hot Spot Temperature @ 125C 275 Hot Spot Temperature (C) 250 225 200 175 150 125 0 20 40 60 80 100 LAS3 LAS1 200 150 100 50 25 0 40 80 120 LAS1 160 200 Percent of 25C Power Percent of 125C Power Rating 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 LAS Series Issue October 2008 Sheet 2 of 3 Low Cost Semi-Precision Power Wirewound Resistor Pulse-Handling Capability @ 25C 14 Energy (watts-second) 12 10 8 6 LAS1 LAS3 Power Derating Curve 200 Percent of 125C Power Rating 175 LAS1 150 LAS3 125 100 75 4 2 0 0.1 0.2 0.5 1 2 5 10 25 75 125 175 225 275 Resistance (ohms) Ambient Temperature (C) Ordering Data Sample Part No. Type LAS LAS - 3 2001 J LF Power 3 = 3 watts 1 = 1 watt Resistance Value Expressed in ohms (Standard EIA/MIL Values) Tolerance J = 5%, H = 3%, F = 1%, D = 0.5% Lead-Free Construction 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 LAS Series Issue October 2008 Sheet 3 of 3 |
Price & Availability of LAS-32001HLF
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