IRLB8743PbF TO-220AB Part Marking Information (;$03/( 7+,6,6$1,5) /27&2'( ,17(51$7,21$/ 3$57180%(5 $66(0%/('21:: 5(&7,),(5 ,17+($66(0%/</,1(& /2*2 '$7(&2'( 1RWH3LQDVVHPEO\OLQHSRVLWLRQ $66(0%/< <($5 LQGLFDWHV/HDG)UHH /27&2'( :((. /,1(& Note: For the most current drawing please refer to IR website at: http://www.irf.com/package/Notes: Repetitive rating; pulse width limited by When mounted on 1" square PCB (FR-4 or G-10 Material). max. junction temperature. For recommended footprint and soldering techniques refer to Starting T application note #AN-994. J = 25°C, L = 0.61mH, RG = 25Ω, I AS = 32A. Rθ is measured at TJ approximately 90°C. Pulse width ≤ 400µs; duty cycle ≤ 2%. This is only applied to TO-220AB pakcage. Calculated continuous current based on maximum allowable junction temperature. Package limitation current is 78A. Data and specifications subject to change without notice. This product has been designed and qualified for the Industrial market. Qualification Standards can be found on IR’s Web site. IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7903 Visit us at www.irf.com for sales contact information . 04/2009 www.irf.com 9