Electronics Forum | Mon Oct 30 04:32:52 EST 2000 | G. English
We also use Datum Dynamics, I believe DEK are also in the market now for various tooling fixtures. G
Electronics Forum | Thu Oct 26 14:41:33 EDT 2000 | Derek Vanditmars
We are planning on replacing a SMT 100Pin QFP with a COB module that will have two dies that are functionaly equivalent to the old part that will not be available. Questions: 1)Suggestions on substrate material FR-4 or something better? 2)Are there d
Electronics Forum | Wed Nov 08 14:28:39 EST 2000 | Finepitch Services
the current design must be a die-up one, so routing for a flip-chip on board will be a bit difficult. it almost HAS to be wire bonded, to me...
Electronics Forum | Thu Oct 26 17:50:50 EDT 2000 | Dave F
Sal: Two things: 1 Duct tape the scope to the back of your customer�s head so he / she can�t find stuff like this. 2 Profile that lead.
Electronics Forum | Thu Oct 26 18:24:27 EDT 2000 | Darby
No vias or other nasties near or under pad? Check the cad file of middle layers if applicable. Not being programmed on site or by customer with contamination in programmer? Most unusual. Let us all know if ( when ) you find out.
Electronics Forum | Fri Oct 27 04:03:47 EDT 2000 | JohnW
Sal, check the spec of the components, what are the leads made of?? also check what's happening under the pad, is there a large ground plain or a heavy track running there??
Electronics Forum | Fri Oct 27 18:30:20 EDT 2000 | Dan Woodward
I can't help you with your soldering problem, but I wonder if a pressfit connector is an option for you. If this connector is available as pressfit, you can avoid the solder wave proces and associated problems. Write me if you are interested in more
Electronics Forum | Sat Oct 28 10:24:56 EDT 2000 | Ben
Try to insert thin copper plate (approx. 1.5mm thk) at the end of the flow direction. Place it approx. 2mm away from the lead. The copper will pull away the solder & thus minimise bridging problem.
Electronics Forum | Sat Oct 28 11:38:53 EDT 2000 | Dave F
This "thieving" idea is a good one. There is a SMTnet thread on connector thiefs from a coupla years ago that you might check.
Electronics Forum | Fri Oct 27 10:12:45 EDT 2000 | pr
I could be wrong but I thought they were to designate for paper or plastic feeder types.
