Electronics Forum | Wed Jan 09 15:24:49 EST 2002 | mregalia
Thanks Chris. As I was writing my last message our mailperson dropped off the latest issue of Circuit Assembly. It has an article on mixing SMT and COB on the same board. The author recommends as a compromise 10-20 micro inches of gold over 70-100 of
Electronics Forum | Wed Jan 09 17:03:44 EST 2002 | rob_thomas
We follow IPC-2221 recommendations for Au and don't have a problem as long as the Ni is under 150 microinches.This ensures a consistent process for us.Also we do plasma clean after SMt and prior to wirebond.That makes a big difference. Rob
Electronics Forum | Wed Jan 09 17:14:48 EST 2002 | mregalia
Do you bond with Al or gold wire? What happens if the Ni is over 150 microinches? Thickness of nickel is one those things that we have not been consistent with. The industry seems to pretty much universally call for 100-200 microinches. Our old board
Electronics Forum | Wed Jan 09 18:17:15 EST 2002 | Chris
I don't have a plasma cleaner either. It will help a lot. Actually I don't clean at all. Our wirebond pads are far enough away so the flux residue does not get on the wirebond pads. That's what we think anyway. I am sure we have some degree of c
Electronics Forum | Wed Jan 09 21:19:49 EST 2002 | davef
When I said "In this area, there is no difference between your experience in ceramic substrates and PTFE substrates." I was referring to the area we were discussing ... gold plating. I am sorry if you thought I ment than the wire bonding process wa
Electronics Forum | lysik |
Wed Jul 10 21:11:57 EDT 2002
Electronics Forum | Thu Jul 11 11:17:31 EDT 2002 | cyber_wolf
From reading your post, it looks like Mydata has refused to support a used machined that you purchased ? What type of Mydata is it? What Year ?
Electronics Forum | Thu Jul 11 14:02:03 EDT 2002 | lysik
Tey will support it but it is like pulling teeth. Do you service MyData machines?
Electronics Forum | Thu Jul 11 14:13:41 EDT 2002 | cyber_wolf
I know quite a bit. I have worked on Mydata's daily for about 8 years. E-mail me with your phone# and I will contact you for specifics.
Electronics Forum | Thu Jul 11 14:59:22 EDT 2002 | pjc
Right or wrong, Mydata has a "second user" registration fee policy in order to recieve support. If you paid the fee then you get support. If you are a re-seller and not the end-user, that may explain the treatment you are getting. If you are an end-
COT specializes in high quality SMT nozzles and consumables for pick and place machines. We provide special engineering design service of custom nozzles for those unique and odd components.
2481 Hilton Drive
Gainesville, GA USA
Phone: (770) 538-0411
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