Just an observation, connecting copper to aluminium is very bad news for corrosion. I hope this piece of kit is destined for a nice benign environment.... > Phil, > rather than plating the through holes, why not fill with a > screen > print/ thermal cure conductive? The effectiveness of this method may > depend > on hole diameter & panel thickness..... > just a thought. > > David Albin > Coates Circuit Products > > -----Original Message----- > From: Phillip E. Hinton [mailto:[log in to unmask]] > Sent: 29 June 2001 05:45 > To: [log in to unmask] > Subject: [TN] Copper Plating Aluminum > > > All > > Some designer has called out a plated-thru PC board that has copper > layers > and aluminum cores joined by plated thru copper holes. I am aware of > two > lousy methods that have been used. One is to use electroless nickle > instead > of electroless copper to give a metallic coating in the holes prep the > holes. > A zincate process precedes the electroess nickel. The second is to use > a > board that has been zincated and use pryo copper asa a plating solution. > > Does anybody have any other less difficult magical solution(s) > > Thanks > Phil Hinton Eric Christison --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------