-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 7809

Electroless Gold Soldering Problems


Dear Friends:

Has anybody ever faced soldering problems on Printed circuit boards that have finishing electroless Au over Nickel? I have a strong problem by trying to solder on these PCBs produced 1 year ago. I identified that there is oxidation on the Nickel surface when I drop down a board with 4 BGAs and one of them Jumps up. We tried to HASL the boards we succeeded, but now I am afraid that we are facing the black nickel phenomenon and it is not possible at all to solder specifically small joints even with soldering iron and aggressive fluxes.

I would appreciate any help form anyone.


Spyros Palles
Intracom SA - Peania, Attica, Greece


Two suggestions:

1. Are you using electroless Au or immersion Au? This actually becomes a thickness issue.

2. Have you checked the Au deposit porosity?

James Totter
James Totter, CEF
- Tallahassee, Florida

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.