Electronics Forum: ipc hardgold plating spec (Page 1 of 4)

PCB with ENIG plating shelf life?

Electronics Forum | Fri Jan 06 00:03:10 EST 2023 | SMTA-64419298

Hello Evtimov, sorry...just saw post as I was looking through list...a bit late. I don't know if you ever got your answer. IPC-4552A covers EniG finishes and suggested shelf life. I've referred to these doc's quite a bit. Good spec's ! Yes, I beli

Black color solder wetting after reflow

Electronics Forum | Fri May 13 14:08:39 EDT 2011 | eezday

This appears to be black-pad and is often the result of using specs that call for gold plating that is too thick. The black pad is corrosion that is created between the gold and electroless nickel during the gold plating process. This is counter in

Solder wicking up on connector leads

Electronics Forum | Tue Sep 16 17:03:34 EDT 2014 | rangarajd

We have an issue with solder wicking up the leads/ inside terminations on an SMT connector. The solder coverage is sometimes over 50% of the connectors inside pin length. The terminations are gold plated. Is there an IPC spec for acceptability? Plea

Re: Gold Finger Cleaning

Electronics Forum | Fri Nov 13 23:33:33 EST 1998 | Kallol Chakraborty

| | | I believe that gold fingers on my circuit boards are being | | | contaminated and need to clean them with some chemical | | | solution. Any recommendations. | | | | | Chuck: What is the type and source of your contamination? Dave F | | We a

IPC-9850 Glass Plate

Electronics Forum | Thu May 01 09:53:33 EDT 2003 | stefwitt

http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=3881&#Message15365 http://www.e-insite.net/epp/index.asp?layout=article&articleid=CA213352 http://www.inspectcom.com/About%20AccuSpec.htm

COPPER THICKNESS IN PTH BARREL HOLE

Electronics Forum | Mon Jan 10 03:45:23 EST 2022 | proy

YES there is an IPC target/acceptable spec In general terms the barrel thickness in the hole should be 1 mil (thou). IPC has an allowable limit lower around .75 with some other factors. I have been checking barrel plating on all incoming boards since

Post Reflow changes To Silver Immersion Copper Traces On PWB

Electronics Forum | Sat Feb 16 07:21:17 EST 2019 | SMTA-Joe

I am experiencing a "tarnishing" issue on PWB traces that may be causing problems with component reflow. The PWB traces are made to the following spec: SOLDER MASK OVER BARE COPPPER WITH SILVER IMMERSION PLATING PER IPC4553, PLATING TO BE 8-12 MIC

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Thu Sep 26 14:43:43 EDT 2002 | Jim M.

unsure of what solder spec. your working to?.IPC/EIA J-STD-001C, Section 9.2.4 clearly states dull, matte, gray or grainy appearing solders are accpetable depending on your process and if the acceptability of the neaxt paragraph is met.IPC 610 and J-

Would YOU except this PCB ???

Electronics Forum | Fri Aug 15 00:51:30 EDT 2008 | boardhouse

Hi Paul, My discloser, I sell for an offshore house, this is Crap.... Section 3.4.3 Annular Ring (External) of IPC-6012A, which also calls out Table 3-5, states that "Plated-through holes identified as vias can have up to 90 degrees breakout of t

Re: Gold Finger Cleaning

Electronics Forum | Sat Nov 14 08:05:54 EST 1998 | Earl Moon

| | | | I believe that gold fingers on my circuit boards are being | | | | contaminated and need to clean them with some chemical | | | | solution. Any recommendations. | | | | | | | Chuck: What is the type and source of your contamination? Dave

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