Industry Directory | Consultant / Service Provider
Adhesive Flip Chip Technologies, Bumping Services (Pd, NiAu, polymer...), Assembly Services (Prototyping to High Volume)
Industry Directory | Consultant / Service Provider / Manufacturer
Pandawill Circuits manufacture and supply a wide range of high quality PCB technologies, volumes, cost and manufacturing lead-time options based on our fundamental understanding of the PCB manufacture
Metal Covers are usually Kovar plated with Ni/Au. Covers are sealed to a ceramic or metal package, achieving a hermetic enclosure.
EzPCB offers various kinds of surface finishing technology, including Sn/Pb, Ni/Au, immersion gold, chemical silver etc. Lead-free OSP finishing technology is our newly introduced service, and is welcomed by customers in the EU, US and in Austrilia.
Electronics Forum | Wed Mar 22 12:53:43 EST 2000 | David Spilker
Be careful if you use Ni/Au. The "black pad" phenomenum can be crippling. We moved from Ni/Au to OSP because of it. I also don't want to return to the lack of flatness of HASL.
Electronics Forum | Thu Oct 12 08:46:16 EDT 2000 | T Jones
Several online PCB fabrication quote forms offer SMOBC as a surface finish along with HASL, Ni/AU, etc. How does one specifify SMOBC for traces and untented vias, and elctroless Ni/Au for smt pads? Are these processes mutually exclusive? Or can I g
Industry News | 2003-06-13 10:10:58.0
By combining PacTech's electroless under bump metallization (UBM) processing with DEK's advanced mass imaging systems to create the solder bumps, users can implement a wafer-level, SMT-compatible flip chip assembly process.
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.
Technical Library | 2012-10-18 21:58:51.0
First published in the 2012 IPC APEX EXPO technical conference proceedings. In this paper, we report on a comprehensive study regarding the morphology evolution and voiding of SnAgCu solder joints on the central pad of two different packages – QFN and an Agilent package called TOPS – on PCBs with a Ni/Au surface finish.
Technical Library | 2017-02-28 12:39:50.0
During the last 5 years mobile phones and other portable consumer electronics have been extremely popular and spread all over the world in different climate zones in very high volumes. At the same time the mobile phone terminal for many people has become a necessity that is brought with them in any activity they practice. These changes in user behavior have heavily changed the impact on handheld terminals from moisture, sweat, corrosive atmospheres and mechanical drop. As a result of this the requirement to solder joint reliability, corrosion stability and wear resistance are heavily increasing to keep a high reliability of the terminal.Immersion Ni/Au has been the overall dominant surface finish on Printed Wiring Boards (PWB's) for the last 10 years, but a paradigm shift to avoid use of this thin and porous surface finish is ongoing nowadays because it can’t address these challenges in a satisfactory way.In today's handheld terminals, Organic Solder Preservative (OSP) has replaced Immersion Ni/Au on solder pads. Carbon surface finish for Key- and spring contact-pads, combined with the right concept design can make use of Immersion Ni/Au unnecessary in the near future. The result will be higher reliability with less expensive and simpler processes.This paper will discuss the various considerations for choice of surface finish and results from the feasibility studies performed.
The Morphology Evolution and Voiding of Solder Joints on QFN Central Pads with a Ni/Au Finish SMTnet Express October 19, 2012, Subscribers: 25598, Members: Companies: 9011, Users: 33828 The Morphology Evolution and Voiding of Solder Joints on QFN
