Electronics Forum: used (Page 642 of 2489)

Soldering to Immersion Tin surface finish

Electronics Forum | Tue May 15 11:55:16 EDT 2001 | dason_c

We had a same problem before and Cirtech work with FAB supplier. It is due to the contamination on the tank. No special profile and paste use on the immersion tin board. Dason

White spots on PCB

Electronics Forum | Sun May 13 21:02:34 EDT 2001 | djarvis

Gary, You're not trying to clean these boards with Iso or other solvents after using no-clean solder paste? That'll do it.

Streckfuss EO14 wavesolder machine

Electronics Forum | Tue May 15 21:09:45 EDT 2001 | tdao

Hello, Is anyone out there familiar with this wavesolder or currently still use this equipment? I am in search of spare parts replacement due to Streckfuss Co is no longer support it. Please e-mail to tdao@smtnet.com Your help is greatly appreci

Press-Fit Workmanship standard

Electronics Forum | Wed May 16 14:09:22 EDT 2001 | davef

First thing I'd use is IPC-A-610C, �4.8.2 Connector Pins - Press-Fit Pins. Does it work in your case?

Scored Panel Depth

Electronics Forum | Thu May 31 15:32:56 EDT 2001 | dspilker

I saw a post from last year that quoted Hadco. For a .062" thick PWB, the remaining material was .012" +/- .002". This is close to what we have been using, but some PwB vendors are now asking for .020" +/-.005". This seems too thick for smooth bre

Waffle Tray Definition

Electronics Forum | Wed May 23 17:59:50 EDT 2001 | davef

You could just use this list http://www.holden-enviro.com/Trays%20Type%20by%20Type.html, call the suppliers listed, ask them for them dimensions, and you'd be set.

Line Balance Universal HSP/GSM

Electronics Forum | Fri May 25 14:40:05 EDT 2001 | greggg

Can anyone recommend a low-cost line-balancing software application for use with a Universal HSP (4790) and a GSM-1 with Flex Jet Head (7 nozzles)? Thanks, Greggg

Flex Circuit

Electronics Forum | Wed May 30 10:35:54 EDT 2001 | traviss

Do you have vacuum on your printer? I guess not or you wouldn�t be asking. Can you get vacuum? If not you could use double sided tape, I am always amazed how many times it can stick before it needs replaced.

Can local fiducials improve BGA placement?

Electronics Forum | Wed Jun 06 15:45:37 EDT 2001 | gdstanton

Looking for any insight into whether the use of local fiducials will help or eliminate component recognition issues.

Can local fiducials improve BGA placement?

Electronics Forum | Wed Jun 06 16:04:02 EDT 2001 | pteerink

Greg, Need to give more to get more! What are the details? What are the problems you are seeing exactly? What type of part are you trying to place? What type of machine are you using? What type of vision recognition? What type of PCB finish? Phil


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