Electronics Forum | Wed Feb 07 07:50:34 EST 2007 | davef
Jax: Matt works for Sipad. In the past, he has posted questions, often with pix, seeking help resolving production issues, often involving issues with bare boards. He's not pimping his product.
Electronics Forum | Fri Feb 09 16:11:31 EST 2007 | MAC
Not an expert on PCB manufacture, but it looks like mask from other side of PCB flowed through vias before this side was masked. Is it possible previous vendor masked this side first, or used film-type mask which would not flow through?
Electronics Forum | Tue Feb 13 11:45:27 EST 2007 | realchunks
If you're using vaccuum to hold the board, too much vacuum can cause bad print. This generally occurs during snap off. You can either decrease snap-off time of reduce vacuum.
Electronics Forum | Wed Feb 07 11:27:25 EST 2007 | asoe
I just wonder anyone had the idea of solderability test for through hole by using a wetting balance equipment? I read the jstd002/003 however my feel is now our machine (metronelec st60) is not capable of this test?
Electronics Forum | Wed Feb 07 14:57:18 EST 2007 | davef
The standard Metronelec Menisco ST 60 can not run a dip and look test for PTH parts. It is an optional feature on that machine.
Electronics Forum | Wed Feb 07 15:18:16 EST 2007 | dphilbrick
Tintronics in Huntsville AL can do this. PS I use them all the time for various services. I have no affiliation with them other than being a customer.
Electronics Forum | Wed Feb 07 16:40:15 EST 2007 | russ
Be sure that this component temp during operation does not exceed the low temp of the solder. (it has happened in similar situation) Very good idea though Russ
Electronics Forum | Wed Feb 07 17:17:58 EST 2007 | russ
I would not be concerned about the reliability when doing this, I re-read your post and am familiar with this type of process. Russ
Electronics Forum | Wed Feb 07 17:32:15 EST 2007 | davef
If you can't find bismuth wire, use 42Sn58Bi. For more, look here: http://www.mrs.org/s_mrs/bin.asp?CID=2274&DID=48689&DOC=FILE.PDF
Electronics Forum | Wed Feb 07 18:30:11 EST 2007 | greg york
or low melt Sn/Pb/Bi alloy, readily available and fairly cheap.If your UK based I will send you a sample if it will help you prove it cheers greg
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