Circuit World: Volume 21 Issue 2

Subject:

Table of contents

Half Way There: Only 1,826 Days to Go

Roger Tyler

At the beginning of 1990 I was given the honour of writing the editorial for the January issue of Circuit World as we started the countdown on the final decade leading up to the…

On Insulation Resistance

B.N. Ellis

Surface insulation, electrochemical migration and various other insulation resistances are terms which are often glibly used, sometimes even incorrectly. This paper categorises…

A Reliability Study of Fuzz Button Interconnects

D.B. Harris, M.G. Pecht

This paper presents the methods and results of load, deflection and electrical contact resistance experiments for reliable electronic module design using fuzz button technology…

Testing Controlled Impedance Boards

A.J. Burkhardt

This paper presents the results of research into the process of testing controlled impedance circuit boards. It aims to provide a general introduction to the subject of controlled…

PCMCIA: Material Considerations

J. Bouska

The market for PCMCIA or PC cards is the fastest growing market in today's printed wiring board market. It represents a very important opportunity for the North American…

The Concept and Success of No‐clean Technology

W. Rubin

No‐clean fluxes and solder pastes are rapidly finding an important position in soldering production technology. Their growth has been strongly influenced by the increasingly large…

Plastic Encapsulated MCM Technology for High Volume, Low Cost Electronics

R. Fillion, R. Wojnarowski, T. Gorcyzca, E. Wildi, H. Cole

An innovative embedded chip MCM technology is being developed to address the packaging needs of the high volume, non‐military electronics industries. This development has evolved…

Fluxless Wave Soldering

D.M. Tench, J.T. White, D. Hillman, G.K. Lucey, T. Gher, B. Piekarski

Fluxless wave soldering in a nitrogen atmosphere was investigated for epoxy‐fibreglass circuit board coupons having bare copper and solder‐coated through‐holes. The Reduced Oxide…

An Alternative to Feed and Bleed for Saving Chemicals and Rinse Water

T.Y. Choo

The feed and bleed method of controlling process chemicals commonly used in the printed circuit industry, though convenient, is inefficient. In a typical feed and bleed…

PCIF News

Trevor Galbraith

The following is a summary of the reports sent to those members participating in the various statistical surveys running at present.

International Institute News

The Association finished 1994 with another successful Annual General Meeting held at the Spread Eagle Hotel in Thame (Oxon). This event marked the end of a two‐year period of…

Industry News

Jörg Franke

Dr Wallace Rubin, international consultant on soldering technology, was recently honoured with the 1994 Environmental Protection Agency (EPA) Stratospheric Ozone Protection Award…

New Products

CMI (Europe) has introduced a new version of its PTX hand‐held gauge for measuring plated through‐hole copper thickness of printed circuit boards prior to etch which can now also…

Cover of Circuit World

ISSN:

0305-6120

Online date, start – end:

1974

Copyright Holder:

Emerald Publishing Limited

Open Access:

hybrid

Editor:

  • Associate Professor Pooya Davari