Table of contents
Polymer Thick Film—A Powerful Supporting Technology in Diverse Applications
P.L. KirbyMaterials based on polymer films which are deposited by a screen printing process onto an inert substrate are finding innumerable applications in the fabrication of circuits in…
A Novel Approach to Manufacturing Surface Mount Assemblies
B.E. Goblish, J.E. DepreImplementing surface mount technology (SMT) into military systems has not progressed as rapidly as expected. One of the major reasons is the lack of availability of MIL Spec…
The Effect of Solder Mask on PCB Solderability
C. LeaSolder masks are used universally on high density printed circuit boards to reduce the occurrence of solder bridges between adjacent tracks and pads. The use of solder mask can…
A New Approach to Outgassing Study of Plated Through‐hole Printed Boards
M. Feldin, C. Zevnik, I. KovačOutgassing of PTH PCBs at different stages of PCB production was studied with a modified IEC outgassing test, Draft June 1985, now included in IEC 326–2 Amendment No. 2, January…
Preparation of Small Diameter Holes in Printed Circuit Boards for Electroless Copper Plating Using a Jet Pumice Machine
D.M. FarrellDue to problems experienced at the deburring stage of drilled 0·013 in. diameter holes, where the holes became blocked with deburring brush fibres, it was necessary to replace the…
Environmental Considerations for Applying Photostructurable Liquid Soldermasks
G. MessnerWherever solvents and solvent containing systems are employed, protection for people and the environment is a vital factor in the way that they are used. The paper addresses the…
AOI: Future Challenges
K. RichterAOI has become a useful tool in the PWB industry, for yield enhancement and control. Future changes in manufacturing processes will affect the requirements from future AOI…
A Complete Integrated Tooling System for Manufacture
W. ColquhounWtih the increased use of multilayer boards incorporating yet smaller track and gap widths, careful thought must be given to the production of the manufacturing tooling to…
Manufacturing Tolerances for High‐Speed PCBs
K. RitzA method is shown which allows evaluation of production tolerances for high speed PCBs (microstrip, stripline) in order to maintain the impedance Z within a specified range.
Hi‐rel Multilayer Plated‐through Hole Utilising the EE‐1™ Process
M. Eliacin, F. ScaraglinoThis paper describes the use of the EE‐1 process for making high‐reliability multilayer boards. The EE‐1 process eliminates the need for flash electroless copper for…
Engelhard Ltd, Cinderford, Gloucestershire
By no means a city‐lover, and indeed considerably more at home in the heart of the country, I thoroughly enjoyed the recent opportunity to visit Engelhard's Cinderford facility…
Printabord PCB Ltd, Reading, Berkshire, England
The county town of Berkshire—Reading—is a lively blend of old and new. Now a thriving industrial centre in the ‘Golden Belt’ which stretches westwards from London on both sides of…
International Institute News
The LA/Ventura Annual Workshop was held on 22 June on the theme ‘Fine Line and Military Requirements’. Four workshops were conducted simultaneously on the following aspects…
Industry News
Coventry‐based Shipley Europe have appointed George Allardyce to the newly‐created position of European technical manager. The appointment further strengthens Shipley's research…
New Products
A new development in palladium‐nickel processes is available from Engelhard. ‘Pallnic’ II is an improvement on the established market leader ‘Pallnic’ which was designed to…
ISSN:
0305-6120Online date, start – end:
1974Copyright Holder:
Emerald Publishing LimitedOpen Access:
hybridEditor:
- Associate Professor Pooya Davari