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Burn In and Test Socket Designs

IP.com Disclosure Number: IPCOM000242470D
Publication Date: 2015-Jul-17
Document File: 2 page(s) / 310K

Publishing Venue

The IP.com Prior Art Database

Abstract

A power bar enabled universal QFP lead frame based package has been developed where the power input sources are supplied using additional tie bars at the four corners of the quad package. To make this package testable, new Burn In and Test socket designs are required. This paper discloses the socket designs that cater to the new QFP package I/O pins layout and design.

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Document Title 

Burn In and Test Socket Designs

 

Abstract 

A power bar enabled universal QFP lead frame based package has been developed where the power input sources are supplied using additional tie bars at the four corners of the quad package. To make this package testable, new Burn In and Test socket designs are required. This paper discloses the socket designs that cater to the new QFP package I/O pins layout and design.

Body 

Standard Burn In and Test sockets for conventional QFP packages are readily available but they cannot handle the additional leads formed at the corners of the new QFP packages, shown in the drawings. All current and conventional burn in and test sockets have been designed for conventional QFP packages where the gull wing leads are located strictly on the four sides of the package perimeter.

As shown in the drawings, in the power bar enabled universal QFP package, additional test pins are needed for the 8 gull wing lead located at the 4 corners of the package. With these design requirements, a new concept of burn in and test sockets where QFP corner leads can be tested is proposed. At each of the four corners of the sockets, 2 or more additional test pin connectors are added, and routed to the test board, and the spring loaded sleeve has been relocated to accommodate the additional test pins.

This is a new socket design needed to test the power bar enabled universal QFP package. Without the socket redesign, the power bar enabled universal QFP...