Browse Prior Art Database

Removal of Large Pin in Hole Connectors

IP.com Disclosure Number: IPCOM000107212D
Original Publication Date: 1992-Jan-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 1 page(s) / 37K

Publishing Venue

IBM

Related People

Fry, BM: AUTHOR [+3]

Abstract

Removal of large pin-in-hole connectors with pins connected to heavy metal ground shield proved impossible without damage to the raw card using a conventional solder fountain. That heat sinking of the connector on the top side of the board would not allow the solder to reach reflow temperature.

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Removal of Large Pin in Hole Connectors

      Removal of large pin-in-hole connectors with pins connected to
heavy metal ground shield proved impossible without damage to the raw
card using a conventional solder fountain. That heat sinking of the
connector on the top side of the board would not allow the solder to
reach reflow temperature.

      If the portion of the connector on the upper side of the card
was preheated to 150 degrees Centigrade, at the time the solder
fountain was cycled, the parts could be quickly removed without card
damage.

      To do this, an auxiliary heat source was built into a tooling
head designed for each style connector, that contained an electrical
heater (see Figure 1 for details). The tool was also equipped with
insulated handles to allow the operator to retain the sense of touch
required to avoid lifting the circuitry on the board.

      Disclosed anonymously.