PC boards and kits for machine set-up and calibration, hand solder training, rework, practice, testing and more along with a drawing of each PCB. Practical has a PCB board or kit to meet your requirements. BGA Fine Pitch, Global Daisy-Chain or Vari
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Our design services – the total package. At i3, we are the premier supplier of leading-edge PCB and semiconductor package designs. We maintain a highly skilled team of design engineers with more than 170 years of collective experience in the desi
Electronics Forum | Tue May 15 15:15:53 EDT 2001 | ohboy
Hi all, I just discovered this forum and I'm very impressed. We have a vendor who recently stopped placing desiccants in the vacuum packaging for our pcbs. (Yes, it's on the dwg!) His reasoning was that the desiccants can degrade the finish on the
Electronics Forum | Tue May 22 08:43:05 EDT 2001 | ohboy
Wow! I'm going to apply for something at Desiccare, I think... I found similar things about desiccants, but mostly material related stuff, also some concerns more about the indicator card than the desiccant. Nothing conclusive. At the moment, I
Industry News | 2012-04-06 15:32:39.0
GPD Global, a manufacturer of precision fluid dispensing systems for high-volume 24/7, low-volume/high-mix and R&D production, announces the global release of its PCD4 Dispense Pump after its successful release and testing in the North American market.
Industry News | 2003-02-27 08:41:52.0
Elec & Eltek International Co. Ltd. (
Technical Library | 2021-10-20 18:21:06.0
The solderability of the SAC305 alloy in contact with printed circuit boards (PCB) having different surface finishes was examined using the wetting balance method. The study was performed at a temperature of 260 _C on three types of PCBs covered with (1) hot air solder leveling (HASL LF), (2) electroless nickel immersion gold (ENIG), and (3) organic surface protectant (OSP), organic finish, all on Cu substrates and two types of fluxes (EF2202 and RF800). The results showed that the PCB substrate surface finish has a strong effect on the value of both the wetting time t0 and the contact angle h. The shortest wetting time was noted for the OSP finish (t0 = 0.6 s with EF2202 flux and t0 = 0.98 s with RF800 flux), while the ENIG finish showed the longest wetting time (t0 = 1.36 s with EF2202 flux and t0 = 1.55 s with RF800 flux). The h values calculated from the wetting balance tests were as follows: the lowest h of 45_ was formed on HASL LF (EF2202 flux), the highest h of 63_ was noted on the OSP finish, while on the ENIG finish, it was 58_ (EF2202 flux). After the solderability tests, the interface characterization of cross-sectional samples was performed by means of scanning electron microscopy coupled with energy dispersive spectroscopy.
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
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Wisconsin Chapter In-Person Event: PCB Workshop and PCB Plant Tour
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
Evaluation of Laminates in Pb-free HASL Process and Pb-free Assembly Environment SMTnet Express September 20, 2012, Subscribers: 25503, Members: Companies: 8989, Users: 33687 Evaluation of Laminates in Pb-free HASL Process and Pb-free Assembly
Imagineering, Inc. | https://www.pcbnet.com/blog/everything-you-need-to-know-about-pcb-finish/
: nickel and gold, and hot air solder leveling (HASL). Today, dozens of options for PCB finishes are available, each with their own benefits for different applications
ASCEN Technology | https://www.ascen.ltd/Blog/machine/PCB_depaneling_machine/760.html
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