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Castellated Ground Plane

IP.com Disclosure Number: IPCOM000068029D
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Pedroza, GC Shay, RJE [+details]

Abstract

A ground plane with castellated perforations to provide contact with ground pins is shown in the drawing. Both surfaces of a metal ground plane 1 are insulated with suitable material. The castellation tabs 3 at the bonding positions have their edges exposed, and thereby provide a copper surface for soldering by protruding into a solder fillet surrounding a ground pin 5. The castellation tabs impinge upon the solder fillet by virtue of their inner diameter being less than the outer diameter of the solder fillet. The minimum diameter of the castellation is at the same time larger than the maximum untinned pin head diameter with allowance for the maximum pin hole location tolerance; therefore, electrical contact is assured.