However if a new design is produced, that component will use the new JEDEC designation and not the older obsolete one. If the component has been in production since before the designation was retired, and continues to be produced than the same part designation will continued to be used. But they all start to be derated at 25 0C, with the curve falling off to zero power dissipation at 150 0C.Īn inactive package style does not imply that one may not be in service or used by a manufacturer. SOT-223 4-lead surface mount package Įditor Note All of the derating curves I've seen relating to transistor surface mount packages all appear identical, except that the vertical axis varies greatly. TO-263, 7-Terminal Surface Mount, with Tab TO-263, 5-Terminal Surface Mount, with Tab TO-263, 3-Terminal Surface Mount, with Tab TO-261, 5-Terminal Surface Mount, including Tab TO-258, 3-Terminal Through-Hole, Metal Tab TO-257, 2-Terminal Through-Hole, Metal Tab TO-257, 3-Terminal Through-Hole, Metal Tab 7-Pin TO-220, 7-Lead Through-Hole, Plastic Case with Metal Tab 5-Pin TO-220, 5 Staggered-Lead Through-Hole, Plastic Case with Metal Tab 5-PIn TO-220, 5 Straight-Lead Through-Hole, Plastic Case with Metal Tab TO-220, 3-Lead Through-Hole, Plastic Case with Metal Tab TO-208 package, 3-Terminal Bolt Mount SCR TO-202, 3-Lead Through-Hole, with Metal Tab Inactive JEDEC packages outlines as of 1996. TO-111 package, 3-Terminal Bolt Mount Transistor Case TO-94, Bolt mount, other leads are wires and cable. TO-83, 3-Terminal Bolt Mount SCR, Inactive JEDEC outline as of 1987 TO-66, 3-Terminal Through-Hole, Flange Mount TO-66, 2-Terminal Through-Hole, Flange Mount TO-59, 3-terminal, Through-Hole, Stud Mount TO-53, Square flange mount, fixed terminals TO-48, Inactive see TO-208, 3-Terminal Bolt Mount 3-Pin TO-46, 3-Terminal Through-Hole, Metal Can TO-46, 2-Terminal Through-Hole, Metal Can, Axial Leads. 10-terminal TO-39, Through-Hole, Metal Case 8-terminal TO-39, Through-Hole, Metal Case 4-terminal TO-39, Through-Hole, Metal Case TO-24, Flange Mount, Inactive see TO-213AA TO-23, 2-terminal, 3-leads, Through-Hole, Metal Case TO-11 Metal Can, Axial Leads, Graphic to the left TO-7, 4-lead round package with terminals placed in a straight line
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