Browse Prior Art Database

COMMON STRIP LEADFRAME WITH BREAK-OFF FEATURE

IP.com Disclosure Number: IPCOM000006320D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2001-Dec-24
Document File: 3 page(s) / 117K

Publishing Venue

Motorola

Related People

Authors:
James J. Casto

Abstract

There are several leadframe designs currently in use which are called "common strip:' These designs allow front end assembly equipment such as die bonders and wire bonders to handle leadframes for several very different package types (e.g. SOJ, PLCC, DII: PQFP) with only minor changeovers. See Figure 1. Backend tooling such as molds and trim and form die sets are nec- essarily dedicated to only one package type, and are purchased to be compatible with this "common strip" leadframe design.