Browse Prior Art Database

Permanently Attached Buckling Beam Mezzanine Connector

IP.com Disclosure Number: IPCOM000114395D
Original Publication Date: 1994-Dec-01
Included in the Prior Art Database: 2005-Mar-28
Document File: 4 page(s) / 91K

Publishing Venue

IBM

Related People

Campbell, JS: AUTHOR

Abstract

Previously disclosed IBM high/IO buckling beam contact mezzanine connectors have two separable contact interfaces per buckling beam contact, this creates a contact reliability exposure. All disclosed IBM buckling beam mezzanine connectors to date have had two separable contact interfaces per buckling beam conductor spring. Separable contact interfaces always are regarded as reliability exposures, since they fail more often than permanently attached connections, such as soldered or compliant pin connections. The disclosed invention is a buckling beam mezzanine connector which permanently attaches (i.e.

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Permanently Attached Buckling Beam Mezzanine Connector

      Previously disclosed IBM high/IO buckling beam contact
mezzanine connectors have two separable contact interfaces per
buckling beam contact, this creates a contact reliability exposure.
All disclosed IBM buckling beam mezzanine connectors to date have had
two separable contact interfaces per buckling beam conductor spring.
Separable contact interfaces always are regarded as reliability
exposures, since they fail more often than permanently attached
connections, such as soldered or compliant pin connections.  The
disclosed invention is a buckling beam mezzanine connector which
permanently attaches (i.e., soldered, compliant pin, or other means)
to a circuitized substrate and provides a single separable contact
interface per buckling beam contact, improving the contact
reliability of previously designed IBM buckling beam mezzanine
connectors.

      Also, previously disclosed IBM high I/O buckling beam contact
mezzanine connectors with two separable contact interfaces require
precious metal plating on each of the two mating cards.  The
disclosed invention only requires precious metal plating on one
mating card, which offers potential cost savings and/or manufacturing
feasibility.

      The disclosed invention can be described in summary as a
permanently attached buckling beam mezzanine connector with no more
than one separable contact interface per buckling beam contact
spring.  Several embodiments of the disclosed invention are shown in
Figs. 1-4...