Electronics Forum | Fri Mar 26 15:48:31 EDT 2021 | grahamcooper22
Leaded HASL on small pads can be quite difficult to print on...the HASL tends to be domed rather than flat..and that can affect print quality...you really need a perfectly flat pcb pad to print paste on when you are assembling 0.5mm QFPs. If the pcb
Electronics Forum | Thu Jul 03 18:14:03 EDT 2003 | russ
Kris, I don't know what I HAVEN'T SEEN yet cuz I haven't seen it. (HAHAHA) It is kind of like when you are looking for something and you always say after you found it that it was the last place you looked (Why would anyone keep looking for something
Industry News | 2010-11-02 10:42:48.0
Christopher Associates today announced the US introduction of Koki’s S3X48-M500 and S3X48-M500C Printable No-Clean Lead-Free Solder Pastes. Originally designed and formulated for superior head-in-pillow performance, the pastes also exhibit exceptional wetting and printing.
Industry News | 2008-02-04 11:15:15.0
The European Institute of Printed Circuits (EIPC) extends an invitation to companies and individuals active in the Packaging and Interconnection Industry to submit abstracts for presentation at their Summer Conference which is to be held onMay 29 & 30 2008 in Dresden, Germany.
Technical Library | 1999-08-09 11:11:55.0
A great deal of controversy continues to surround the use of Hot Air Solder Leveling (HASL) in the production of printed circuit boards (PCBs). The financial burden, technological limitations and environmental issues surrounding the HASL process continue to grow. This requires an in-depth review by the printed circuit board manufacturing plant, as well as the assembly operation and instrument designers ( OEMs), to determine what alternative surface finishes are appropriate.
Technical Library | 2021-04-08 00:30:49.0
As the electronic industry moves to lead-free assembly and finer-pitch circuits, widely used printed wiring board (PWB) finish, SnPb HASL, has been replaced with lead-free and coplanar PWB finishes such as OSP, ImAg, ENIG, and ImSn. While SnPb HASL offers excellent corrosion protection of the underlying copper due to its thick coating and inherent corrosion resistance, the lead-free board finishes provide reduced corrosion protection to the underlying copper due to their very thin coating. For ImAg, the coating material itself can also corrode in more aggressive environments. This is an issue for products deployed in environments with high levels of sulfur containing pollutants encountered in the current global market. In those corrosive environments, creep corrosion has been observed and led to product failures in very short service life (1-5 years). Creep corrosion failures within one year of product deployment have also been reported. This has prompted an industry-wide effort to understand creep corrosion
HASL - WHAT A HASSLE, or HASL'd AGAIN. If you don't see the images, please visit online version at #Application.SmtNet.baseURL#/express/ Featured Article HASL - WHAT A HASSLE, or HASL'd AGAIN. Proof Of Design MoonMan This article updates
SMT Express, Issue No. 5 - from SMTnet.com Volume 1, Issue No. 5 Wednesday, October 13, 1999 Featured Article Return to Front Page HASL WHAT A HASSLE, or HASL'd AGAINby Earl Moon INTRODUCTION This article updates one I wrote for Printed
Imagineering, Inc. | https://www.pcbnet.com/blog/how-pcbs-are-made/
. Common types of surface finishes are: HASL (Hot Air Solder Leveling): A cost-effective finish that enhances solderability and protects copper. ENIG
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/pan_APEX06.pdf
. Some components may not survive at that high reflow temperature. Effective transition from SnPb soldering to the lead-free soldering requires key implementation issues to be addressed in the electronics industry
