Patent ID: 8390102

Claim:
An optoisolator leadframe assembly comprising: an integrally formed emitter leadframe part including: a first rail extending in a first direction, and a plurality of spaced apart emitter leadframe units aligned in the first direction, each of said emitter leadframe units extending from said first rail in a second direction perpendicular to the first direction, and including at least one row of emitter leadframes that are interconnected in series along the second direction, said emitter leadframes of each of said emitter leadframe units being aligned in the second direction, each of said emitter leadframes having a die-mounting pad and a pair of leads that are electrically connected to said die-mounting pad; and an integrally formed receiver leadframe part including: a second rail parallel to said first rail, and a plurality of spaced apart receiver leadframe units aligned in the first direction and disposed alternately with said emitter leadframe units, each of said receiver leadframe units extending from said second rail in the second direction, and including at least one row of receiver leadframes that are interconnected in series along the second direction, said receiver leadframes of each of said receiver leadframe units being aligned in the second direction, each of said receiver leadframes having a die-mounting pad and a pair of leads that are electrically connected to said die-mounting pad; wherein said die-mounting pads of said emitter leadframes of each of said emitter leadframe units are respectively aligned with and spaced apart from said die-mounting pads of said receiver leadframes of an adjacent one of said receiver leadframe units in a third direction perpendicular to the first and second directions; wherein each of said emitter leadframe units initially includes a free end portion that is connected to an endmost one of said emitter leadframes along the second direction opposite said first rail and that is configured to be and is in overlapping contact with said second rail; and wherein each of said receiver leadframe units initially includes a free end portion that is connected to an endmost one of said receiver leadframes along the second direction opposite said second rail and that is configured to be and is in overlapping contact with said first rail.