See below: ----- Original Message ----- From: "Matt Polak" <[EMAIL PROTECTED]> To: "Protel EDA Forum" <[EMAIL PROTECTED]> Sent: Wednesday, October 02, 2002 2:52 PM Subject: Re: [PEDA] LPI oxides? ( OT - Good places to get boards populated)
[snip] > One thing I have seen from AC, though, that I've not seen from > anyone else is an oxide finish that they apply under the LPI mask to make > it adhere to the copper better. This results in traces on the outer layers > showing up in 'black' rather than 'shiny green' like everyone else's > boards. It does kind of look cool, but I've never seen this outside of AC's > boards. Talking to the head CAM guy there yielded the specific explanation: > > "That is actually an oxide finish to promote soldermask > adhesion. We may be > phasing it out shortly, however, so don't be alarmed if you stop seeing it." > > Out of curiosity, has anyone else ever seen this done before? > > -- Matt > I kind of like how it looks too. Actually, my understanding is the black oxide is a by-product of a few of the many alternative fabrication processes. It doesn't harm anything. Of course, I could be completely wrong and the AC guy is totally correct Jeff Stout [snip] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
