Product category:
Electronics Manufacturing Materials and Consumables
News Release from: Electrolube
Edited by the Electronicstalk Editorial
Team on 25 June 2002
Solder paste passes the Eurotherm test
Eurotherm has named Koki as the leading supplier of solder paste for its range of thermodynamic control equipment.
Eurotherm has named Koki as the leading supplier of solder paste for its range of thermodynamic control equipment The declaration follows extensive trials with several principal solder paste manufacturers
This article was originally published on Electronicstalk on 27 Nov 2001 at 8.00am (UK)
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Koki is distributed exclusively in the UK by Derbyshire-based Electrolube.
"The Koki SS48 M954 paste supplied by Electrolube produced superior results to the other solder pastes we looked at", comments Peter Borg, in charge of the trials for Eurotherm.
"We required a paste for fine pitch applications, and Koki gave excellent results on slump tests and in repeatability on printing down to super-fine 0.3mm pitch, or 12thou, QFP".
Eurotherm has used Electrolube-supplied Koki solder paste for several years.
However, requiring an additional paste that could print consistently and effectively at 0.5mm pitch (20thou) to allow recently-developed packaging technologies such as uBGA to be exploited, Eurotherm set up the special trial and asked Electrolube to recommend a Koki paste.
"The M954 paste provided excellent results with both paste wall definition and the consistency of paste volume deposited", says Borg.
"With demands on solder paste increasing as pitch gets finer, results such as those we achieved are outstanding.
And, in addition, the print was also highly consistent".
M954 was developed by Japanese company Koki to ensure exceptional continual printing with fine pitch applications at slow to fast (20-100mm/s) print speeds.
Excellent slump resistance is achieved as a result of the carefully selected thixotropic materials inherent in the paste, and these also significantly reduce the occurrence of bridging and solder beading.
A specially developed flux system ensures both high reliability and superior solder wetting, and M954 also has an extremely long stencil and tack time, offering a wide process window.
"At present, the smallest pitch we use in the production of boards for our drive controls is 0.5mm (20thou)", adds Borg, "but we wanted the paste we chose to cope easily with those demands.
For that reason, we trialled paste down to 0.3mm pitch QFP and a 0.5mm pitch, 0.3mm ball size uBGA".
M954 and Koki's full range of solder products are available exclusively through Electrolube.
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