Electronics Forum: process (Page 491 of 1148)

Re: 5 micrograms

Electronics Forum | Fri Aug 14 12:43:10 EDT 1998 | Upinder Singh

| Electrical Eng. is looking for 5 micrograms per sq centimeter. After the board has been cleaned. Is this possible on a fully assembled bd? Yes, u can go to the mentioned level of cleanliness.....but can u be a bit more elaborative. Recently I did

Re: Gold boards OK with SMT?

Electronics Forum | Fri Aug 07 07:52:15 EDT 1998 | Earl Moon

| | Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, not e

White tin immersion finish

Electronics Forum | Wed Jul 29 13:44:45 EDT 1998 | David Spilker

We are investigating alternatives to HASL finishes for more dense PWBs. OSP is not a good choice because of low solid flux and possibly long shelf life. Immersion gold is expensive and so far has been more difficult to wave solder. Has anyone had

Re: BGA rework station and x-ray inspector

Electronics Forum | Wed Jul 22 12:34:43 EDT 1998 | Frank Silva

| | We need BGA rework station and x-ray inspector recently in urget case, Do you have any information to rework FPGA package and inspect them during processing. | Thx for any information | Best Regards, | Stoney Tsai Stoney, Check out Nicolet Imagi

Lead-Free Solder Paste

Electronics Forum | Mon Jul 20 10:56:28 EDT 1998 | Barbara Giunta

I work for DuPont and we supply engineering thermoplastics to the connector industry. We heard that there's a trend towards lead-free solder paste. Can anybody tell me name of companies that are already using lead-free solder paste in US and Europe?

Lead-Free Solder Paste

Electronics Forum | Mon Jul 20 10:54:37 EDT 1998 | Barbara Giunta

I work for DuPont and we supply engineering thermoplastics to the connector industry. We heard that there's a trend towards lead-free solder paste. Can anybody tell me name of companies that are already using lead-free solder paste in US and Europe?

Bare board solderability testing

Electronics Forum | Wed Jul 15 05:36:34 EDT 1998 | Stoney Tsai

Bare board solderability plays a significant role of forming good solder joint. Currently, I can not find any information about bare board solderability testing procedure or methods. I think the procedure of testing should have some differentiations

Re: Fuji QP

Electronics Forum | Wed Jul 15 06:46:12 EDT 1998 | Jim Smith

To process eng. , It's the Fuji FQP132E.... | | | | Hi, | | I'm an SMT tech in a major OEM in Scotland and we have just purchased two Fuji QP's. Does anybody out there have a list of do's and don'ts especialy regarding preventative maintenanc

BULK FEEDING

Electronics Forum | Sun Jun 21 18:06:45 EDT 1998 | Fred Dub

New developments in bulk feeding are making this process of feeding passive components more and more attractive to the PCB manufacturers, for whom the tape feeding for a long time was the solution. The rapid growth in the number of passive component

Re: BULK FEEDING

Electronics Forum | Fri Jul 10 00:04:44 EDT 1998 | Fred Dub

| New developments in bulk feeding are making this process of feeding passive components more and more attractive to the PCB manufacturers, for | whom the tape feeding for a long time was the solution. The rapid growth in the number of passive compo


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