Electronics Forum | Tue Sep 26 09:42:38 EDT 2000 | Chris May
I have to agree with Wolfgang & Jacko. Two months ago, I decide to run a lead free paste trial. The paste was supplied by company "X", and they stayed on site to witness evaluation. I trialled the paste using EXACTLY THE SAME equipment, stencil and
Electronics Forum | Thu Sep 21 05:46:34 EDT 2000 | Wolfgang Busko
Once you know what your print should look like, means you have found the right apertures, stencil thickness, stencil finish and the right printer adjustments and alignments, the main things to watch for or better to control when printing is in progre
Electronics Forum | Wed Sep 20 19:43:35 EDT 2000 | David Harper
We have the very same problem.. In our next job our assemblers will be placing 2 million PTH LEDs. Fortunately we get all out LED's from the same manufacturer and hope they come in bags. If not we gotta cut them off the tape.. and well... that just m
Electronics Forum | Wed Sep 20 19:44:04 EDT 2000 | David Harper
We have the very same problem.. In our next job our assemblers will be placing 2 million PTH LEDs. Fortunately we get all out LED's from the same manufacturer and hope they come in bags. If not we gotta cut them off the tape.. and well... that just m
Electronics Forum | Wed Sep 20 19:46:31 EDT 2000 | David Harper
We have the very same problem.. In our next job our assemblers will be placing 2 million PTH LEDs. Fortunately we get all out LED's from the same manufacturer and hope they come in bags. If not we gotta cut them off the tape.. and well... that just m
Electronics Forum | Thu Sep 14 13:34:43 EDT 2000 | Boca
Of course the others have great answers, try NOT to do it, for all of their reasons. However, had to do it in the past, OEM, custom chip, die wouldn't fit in a SM package, volume wouldn't support a second package type ...... and on and on. So we us
Electronics Forum | Mon Sep 11 14:07:26 EDT 2000 | Steve
Hi ya'll!! We've got some PCB's in receiving inspection that has these little nodules in plating inside all of the barrels. These are microwave PCB's and have almost all of the surface area on both sides covered with with solid metal planes, and no
Electronics Forum | Tue Sep 05 16:04:43 EDT 2000 | Dave F
Pascal: Responding to your questions: 1 Do we have to dry the PCB after cleaning (sic)? Generally, nothing says you have dry the PCB after aqueous cleaning. Along this line, I received several thoughtful responses when I posted a similar thread.
Electronics Forum | Wed Aug 30 00:16:15 EDT 2000 | Craig
We are reflowing ceramic resonators and are finding their tops falling/popping off when handling the pcbs during final assy. The epoxy seems to be coming off the components base and adherring to the lid. The components are "RFM resonators", case type
Electronics Forum | Thu Aug 31 04:25:03 EDT 2000 | Chris May
Dougie, If you have square, rectangular etc; shaped PCB's maybe you could have routing between circuits. "V" shaped grooves top and bottom. I found this extremely good especially if the assemblies are wave soldered. No gaps for flowing up and over.
