Electronics Forum | Thu May 09 15:56:33 EDT 2002 | stownsend
We are using NC. Paste doesn't seem to have an effect on the solderability on a bad batch of ENIG. When ENIG has gone bad, throw the board out.
Electronics Forum | Thu May 09 17:14:45 EDT 2002 | davef
We are changing our ENIG boards to imm silver. Look here http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=5114&mc=5
Electronics Forum | Fri May 10 17:45:08 EDT 2002 | davef
Kinda makes ya wonder why ya changed, eh? Some of our 20 pitch HASL boards come-out just as flat as a farm pond. Just got ta letum be. Pete is spot on!!
Electronics Forum | Thu May 09 00:08:01 EDT 2002 | techment
Could someone provide help regarding IPC's recommendation on Plated Through hole's --- lead to hole ratio. I can't find it in IPC-2221 and IPC-SM-782. Thank you very much
Electronics Forum | Fri May 10 14:55:59 EDT 2002 | xrayhipp
Pete, thanks for the input. These are microvias and dont go through the pcb -- they are laser cut to various depths into the board and are .006" dia. on gold plated pads. Paul.
Electronics Forum | Wed May 22 09:47:29 EDT 2002 | ghenning
Has anyone out there installed these devices on an S20 or had a head crash without them? Are they worth the investment to safeguard the machine? Is there another solution that one might consider?
Electronics Forum | Tue Jun 04 15:26:00 EDT 2002 | ghenning
We got a pair and installed them with little trouble. One hole to drill and tap per side. Activates the e-stop but no message on the HMI.
Electronics Forum | Wed May 29 22:02:16 EDT 2002 | davef
Russ is spot on!!! [Although, he maybe talking uin rather than micron.] Search the fine SMTnet Archives for more.
Electronics Forum | Fri May 31 16:39:42 EDT 2002 | davef
'Flash' is too thin to bear the traffic of most wear surfaces like Jake is talking about. Follow-up with the fretting corrosion discussion over on the current [Jim Zanolli / Teka] OnBoard forum.
Electronics Forum | Thu May 30 08:04:25 EDT 2002 | zanolli
Hello Russ, I'm not quite sure I understand your question. Are you saying that you must hand solder these connectors because the gold plating doesn't allow other though hole processing methods to wet the solder the length of the pin in the PTH? Reg
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