US 4,904,973 AGranted

Foil-roll electronic part

OwnerTakeshi Ikedainventor

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Abstract

A foil-roll electronic part and a process of producing the same. The part produced in this process includes: a lead frame having a plurality of leads; at least a belt-shaped conductive foil connected at one end or thereabout to a given lead of the lead frame and connected at the other end or thereabout or the intermediate portion thereof to the other lead; and at least two insulating films interposed between the belt-shaped conductive foils; whereby the electric part is formed by rolling the belt-shaped conductive foils and the insulating films on the lead frame as being a spool. According to this invention, the foil-roll electronic part wherein lead intervals can be accurately positioned, the production thereof is suitable for the bulk production, the electronic part is excellent in electric characteristics and easily, actually mounted on a printed circuit board.

Claims10

Dependent claims

A rolled foil electronic part comprising:

at least three flat leads arranged substantially parallel to, and spaced apart at scheduled intervals from, each other, with the flat surface of said at least three leads substantially in the same plane;
at least one belt-shaped conductive foil rolled a selected number of turns around said at least three leads substantially perpendicularly to the main axis of said leads;
and
at least one insulating film rolled a selected number of times around said at least three leads substantially perpendicularly to the main axis of said leads, each of said at least one insulating film adjacent the inner surface of each of said at least one belt-shaped conductive foil;
wherein one end of at least one of said at least one belt-shaped conductive foil is connected in the center of the rolled-foil electronic part to a given lead of said at least three leads, and wherein a portion of at least one of said at least one belt-shaped conductive foil is connected to another of said at least three leads other than in the center of the rolled-foil electronic part.

2 more elements

Dependencies are inferred from the claim text.