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SMTnet Express, March 5, 2015, Subscribers: 22,464, Members: Companies: 14,248, Users: 37,833

Technical Library

Conformal Coating over No Clean Flux Residues

K.Seelig, T.O'Neill; AIM Solder

As the proliferation of modern day electronics continues to drive miniaturization and functionality, electronic designers/assemblers face the issue of environmental exposure and uncommon applications never previously contemplated. This reality, coupled with the goal of reducing the environmental and health implications of the production and disposal of these devices, has forced manufacturers to reconsider the materials used in production. Furthermore, the need to increase package density and reduce costs has led to the rapid deployment of leadless packages such as QFN, POP, LGA, and Micro-BGA. In many cases, the manufacturers of these devices will recommend the use of no clean fluxes due to concerns over the ability to consistently remove flux residues from under and around these devices. These concerns, along with the need to implement a tin whisker mitigation strategy and/or increase environmental tolerance, have led to the conundrum of applying conformal coating over no clean residues.

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SMT / PCB Equipment Auctions

Huge 2-Day Auction, Former Assets of Hei, Inc. Late Model SMT/LED Component Package & Assembly Equipment - Complete Production Line

March 19 - 26
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Late Model Conformal Coating Systems & Electronic Manufacturing Equipment

Bids Due: April 30

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Events Calendar

electronica China 2015

Shanghai, China | March 17 - 19 | Messe München GmbH

2015 PCB Cleaning Webinar Series

Online | ZESTRON

South East Asia Technical Conference on Electronics Assembly 2015

Penang, Malaysia | April 14 | SMTA

Career Center


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Industry Associations Events


SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies.

Membership Info | SMTA Certification | Bookstore

Next Event: SMTA Webtorial Tin Whiskers - All You Should Know - March 11 - 13


IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly.

Membership Info | Training & Certification Programs | Standards & Publications - Online Store

Next Event: ITI & IPC Conference on Emerging & Critical Environmental Product Requirements - June 9

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

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