Full Site - : copper electroplating (Page 5 of 9)

Re: Assembly of CSP on pads with vias.

Electronics Forum | Sat Jan 23 13:29:40 EST 1999 | Earl Moon

| Hi Everyone, | We plan to build, for reliability/experimental/research purpose some CSPs (namely Tessera microBGA 46-I/O 0/75mm pitch and TI 64 I/O 0/8 mm pitch). the various factors that we plan to evaluate are the reliability and assembly concern

Re: Good Solder Joint Failures

Electronics Forum | Mon Feb 15 17:57:01 EST 1999 | Earl Moon

| Hope some of you out there can help me with this one. | I am getting feedback from our test department that they are showing opens on solder joints which have visually good wetting. The touch-up operators confirm that the joint looks good. All they

Re: Electroless Tin Plating

Electronics Forum | Fri Aug 20 12:18:11 EDT 1999 | Earl Moon

| I am being asked, by my vendor and Purchasing people about converting from Tin/lead pads on P.C.B's to Electroless Tin Plating. | Can any one tell me what I have to change in my SMT | process (paste, reflow, etc) If any? | I ran one P.C.Boar

Re: Electroless Tin Plating

Electronics Forum | Fri Aug 20 12:54:11 EDT 1999 | Carol Zhang

| | I am being asked, by my vendor and Purchasing people about converting from Tin/lead pads on P.C.B's to Electroless Tin Plating. | | Can any one tell me what I have to change in my SMT | | process (paste, reflow, etc) If any? | | I ran one

Re: Electroless Tin Plating

Electronics Forum | Fri Aug 20 14:22:02 EDT 1999 | Earl Moon

| | | I am being asked, by my vendor and Purchasing people about converting from Tin/lead pads on P.C.B's to Electroless Tin Plating. | | | Can any one tell me what I have to change in my SMT | | | process (paste, reflow, etc) If any? | | | I

PCB Solder Finish Survey

Electronics Forum | Sat Jul 24 10:20:15 EDT 1999 | Bob Willis

PCB Solder Finishes Survey Questions 1999 Results for the 1996-7 survey are located at www.smartgroup.org As a number of SMART people have requested an update on the solder finishes survey SMART Group have run in the past here is your opportunity t

Plating for aluminum wire bonding

Electronics Forum | Sat Mar 15 20:24:13 EST 2003 | ramanandkini

Thanks Mr.Dave. Sorry for the delay. One of our major prolems in ENIG plated surface is that wire does not stick. For many years we were getting a bond strength of 14 grams in both ENIG and electroplated surfaces. Now one vendor supplies ENIG boards

Gold Surface Finish on PCB's

Electronics Forum | Wed Dec 14 07:34:33 EST 2005 | davef

Mike Ozzy If I came to your house, I wouldn't punch you. I'd make you buy me beer. Vern Solberg; Tessera Technologies Inc., 3099 Orchard Dr, San Jose, CA 95134; 408 568 3734 F408 894 0768 vsolberg at tessera dot com. If that doesn't work try: Tes

Differentdefect on circuit board surface

Electronics Forum | Fri Jul 10 07:34:00 EDT 2020 | elijah

From the poor bonding strength of the board, the surface quality problems of the board are divided into: 1. The cleanliness of the board surface; 2. The problem of micro graphite (or surface energy) on the surface. PCB circuit board proofing Youke bo


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