McGean-Rohco scores tops as DuraBOND meets Bellcore spec

Circuit World

ISSN: 0305-6120

Article publication date: 1 June 2000




(2000), "McGean-Rohco scores tops as DuraBOND meets Bellcore spec", Circuit World, Vol. 26 No. 2.



Emerald Group Publishing Limited

Copyright © 2000, MCB UP Limited

McGean-Rohco scores tops as DuraBOND meets Bellcore spec

Keywords McGean-Rohco, Bonding, Multilayers

McGean-Rohco has announced that their white oxide DuraBOND process has been approved to the Telcordia Technologies (Bellcore) specification.

A little over six months since its UK launch DuraBOND, the multilayer bonding system with the distinctive white finish, has achieved approval after official tests confirmed its success in meeting the required standards.

Where other oxides - black, brown and reduced oxide - are covered by a generic approval, McGean-Rohco believes that this is the first time that a branded product has been named.

Stringent testing of the Process Validation Module samples, produced in accordance with McGean-Rohco's recommended processing times and conditions, resulted in a 100 percent conformity to the set criteria.

The DuraBOND system was launched into the UK and European markets at the beginning of 1999. The white oxide process offers board manufacturers a number of significant improvements, particularly over reduced oxide, as it can be used as a direct replacement for both black and reduced oxide. Dwell times of 20-30 seconds are common, so a standard conveyor can easily process 2,500 to 3,000 layers per day. A uniform coating applied to copper of any thickness will not diminish the profile of the copper layer - particularly useful when very fine lines and spaces are part of the circuit design.

DuraBOND layers are durable, stable and tarnish resistant with high bonding performance and costs are comparable with those of reduced oxide. Boards can be easily transported and may be stored from weeks up to several months.

Full technical details are available from McGean-Rohco (UK) Ltd., Qualcast Road, Lower Horseley Fields, Wolverhampton, West Midlands WV1 2QP. Tel: 01902 456563/451312; Fax: 01902 457443; E-mail: or Internet site:

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