Browse Prior Art Database

Multi-Leaded Surface-Mounted Component Extender Device

IP.com Disclosure Number: IPCOM000040159D
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Collier, LE: AUTHOR [+3]

Abstract

Testing of printed circuit boards having multi-leaded surface-mounted components, such as small outline integrated circuits (SOICs) and plastic-leaded chip carriers (PLCCs), may be tested by the use of an extender device without having to remove and add the SOICs and PLCCs by de-soldering them from the board. This enables verification of a test program or circuit design through performing circuit debug and fault insertion. A printed circuit board using multi-leaded surface-mounted components, such as SOICs and PLCCs, for example, has unique problems when it is necessary to perform circuit debug or fault insertion in verifying a test program.

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Multi-Leaded Surface-Mounted Component Extender Device

Testing of printed circuit boards having multi-leaded surface-mounted components, such as small outline integrated circuits (SOICs) and plastic-leaded chip carriers (PLCCs), may be tested by the use of an extender device without having to remove and add the SOICs and PLCCs by de-soldering them from the board. This enables verification of a test program or circuit design through performing circuit debug and fault insertion. A printed circuit board using multi- leaded surface-mounted components, such as SOICs and PLCCs, for example, has unique problems when it is necessary to perform circuit debug or fault insertion in verifying a test program. This is because the SOICs and PLCCs are so small and difficult to solder that the process of removing and adding them to a printed circuit board usually renders the board unusable after a few operations. For debug and fault insertion, many more removal operations are necessary than can be obtained before the printed circuit board becomes unusable when having the SOICs and PLCCs mounted on the board. An extender device 1 (Fig. 1) includes a printed circuit board 2 having two dual rows of plated-through-holes 3 therein. Probe receptacles 4 (Fig. 2) are initially inserted through a socket cap 5 until a shoulder 6 on each of the probe receptacles 4 engages the socket cap 5. Then, each of the probe receptacles 4 is soldered to the hole 3 (Fig. 1) in which it is inserted. Each of the probe re...