Browse Prior Art Database

Vertical Land Printed Circuit board

IP.com Disclosure Number: IPCOM000086192D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Steenburgh, JL: AUTHOR

Abstract

In conventional printed-circuit (PC) boards, current carrying capability and current density is limited by land spacing on the PC board. In order to increase the current carrying capability of conventional PC boards, wider land pattern manufactured from heavier copper is required. The increase in land width significantly reduces the component counts on each printed-circuit board.

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Vertical Land Printed Circuit board

In conventional printed-circuit (PC) boards, current carrying capability and current density is limited by land spacing on the PC board. In order to increase the current carrying capability of conventional PC boards, wider land pattern manufactured from heavier copper is required. The increase in land width significantly reduces the component counts on each printed-circuit board.

The PC board, as depicted in the figure, alleviates the aforementioned problems by positioning components on edge, that is, in a vertical plane. The vertical lands may be combined with conventional printed-circuit flat lands to achieve higher current density, lower cost, and increased component density. The vertical lands can be formed by several means or may be integrally molded to the substrate surfaces. Preformed cavities can be achieved for thin-board connections and cross-commoning buses can be attached at any time in programmed areas for across board communication.

The vertical land strips can be combined with other vertical and horizontal surfaces to achieve heat sinking, grounding, capacitance planes, and heavy component attachment. Vertical insulation, shielding, etc., can be interspersed as required. Connector termination tabs can be of many configurations, such as fast-on, bifurcated or knife blade.

The drawing shows some of the features pertaining to this PC board.

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