Optoisolator leadframe assembly

摘要

An optoisolator leadframe assembly includes: an emitter leadframe part including a first rail and a plurality of emitter leadframe units, each rail including two rows of emitter leadframes, each having a die-mounting pad; and a receiver leadframe part including a second rail and a plurality of receiver leadframe units, each including two rows of receiver leadframes, each having a die-mounting pad. The die-mounting pads of the emitter leadframes of each row of each of the emitter leadframe units are respectively aligned with and spaced apart from the die-mounting pads of the receiver leadframes of an adjacent row of an adjacent one of the receiver leadframe units. Each of the emitter and receiver leadframe parts is a single piece.

主权项

1. An optoisolator leadframe assembly comprising:
an integrally formed emitter leadframe part including:
a plurality of spaced apart emitter leadframe units aligned in a first direction, each of said emitter leadframe units extending in a second direction perpendicular to the first direction and including a pair of rows of emitter leadframes, said emitter leadframes of said rows of each of said emitter leadframe units being interconnected in series along the second direction and 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, said leads of said emitter leadframes of one of said rows of each of said emitter leadframe units extending from said die-mounting pad connected thereto toward said leads of said emitter leadframes of the other of said rows of said emitter leadframe unit; and an integrally formed receiver leadframe part including:
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 in the second direction, and including a pair of rows of receiver leadframes, said receiver leadframes of said rows of each of said receiver leadframe units being interconnected in series along the second direction and 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, said leads of said receive leadframes of one of said rows of each of said receive leadframe units extending from said die-mounting pad connected thereto toward said leads of said receive leadframes of the other of said rows of said emitter leadframe unit, 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 the second direction.