Electronics Forum | Mon Sep 25 09:42:45 EDT 2000 | JAX
Bulk feeding components was and is a great idea, but it seems to stop there. Many P&P equipment vendors have bulk feeding capabilities and most part suppliers sell in bulk cartriges. The problem is in the use. How do you verify resitors that are sitt
Electronics Forum | Wed Aug 30 14:57:43 EDT 2000 | John Thorup
Hello Craig Are code dates other than these two coming apart or do they stay together? If other dates stay together you should get together with RFM. Did the process work before and and the defects just start happening? These are pictured on the RFM
Electronics Forum | Tue Aug 22 14:52:55 EDT 2000 | John Thorup
Jax - absolutely right - the archives are a valuable tool and deserve to be used more than they seem to be. Caumel - Are your blobs on the solder side or the component side? Are your vias tented on the component side? What size are your vias? Is th
Electronics Forum | Fri Aug 04 10:08:18 EDT 2000 | John Thorup
Zactly...what type and size of component. Pressure sensitive or heat seal cover tape? Manufacturer or service house taped? One or all manufacturers/distributors. Are the components in the right size tape? Reasonably recent production? Are they rea
Electronics Forum | Wed Jul 26 10:30:39 EDT 2000 | Wolfgang Busko
Once having those centroid-data using a spreadsheet to convert them to what ever I needed worked fine for me in many cases over years. It just needs a little brainwork and a good knowledge of machine configuration. CAM-software might do the job as we
Electronics Forum | Thu Jul 20 10:03:30 EDT 2000 | Bob Willis
All the points raised so far are correct. Only use QFPs if rearly pushed as the yield on your process will suffer. I have wave soldered parts down to 0.020" in nitrogen with OK results but the pads and drainage pads need to be worked on. Another r
Electronics Forum | Wed Jun 14 18:21:23 EDT 2000 | Robert Moore
It has been our experience that the problem you have discribed was not solder process related. We had two such instances in the past and both were component related. The first case involved a PLCC28 that failed test. Reflowing the solder seemed to co
Electronics Forum | Sat May 27 09:45:52 EDT 2000 | Bob Willis
Many thanks for the name check from John Thorup PIHR can be done very simply and it can provide positive fillets on both sides of the board. I have just finished a line with SDSRS, Simultanouse Double Sided Reflow Soldering thats sodering both sides
Electronics Forum | Thu May 18 13:08:33 EDT 2000 | Wolfgang Busko
Chris, one question, which standard allows to put it in the drawings/dokumention? As I said in my old IPC-D-275 it says "no". Did it change with the new edition ? Referring to J-STD-001 in this case seems to me like "I followed only the orders and do
Electronics Forum | Tue May 02 21:01:21 EDT 2000 | Stefan Witte
I forgot to mention the mass placement machine from Nitto. The Nitto machine places all components out of bulkfeeders. Plastic tubes are routed above the feeders pick position and into cavities of a template. The template is made for the pattern of t