Electronics Forum | Fri Sep 04 02:09:03 EDT 2009 | sachu_70
Hi Walter, Do you refer to a sprayfluxer operation? The problem seems to be a parameter setting issue. 1. Ensure the wide angle spray reaches PCB with optimum jet pressure. You could pass a glass plate to understand flux coverage and view Jet pressur
Electronics Forum | Thu Sep 04 05:18:45 EDT 2014 | sasa29
PCB Manufacturing demands preparation of design well in advance. The finalized designs are fed into the systems and the production is carried away. If the boards are of small sizes, multiple boards are made on a single large board and separated into
Electronics Forum | Wed Jul 12 08:49:38 EDT 2017 | williamaxler
I have a few LED pcb's that have an aluminum > substrate that are ridiculous to rework. They > heat-sink like crazy and I can't reflow the bad > LED's, no matter how much heat I apply. Any > suggestions on techniques or equipment to use? > I ha
Electronics Forum | Thu Aug 31 10:38:24 EDT 2017 | jchris
Thanks for all of your suggestions. I ended up borrowing a Pace Worldwide PH100 Preheater, which worked like a charm. I'm in the process of purchasing one for our own shop. I had to place the aluminum pcb directly onto the PH100's ceramic heating pla
Electronics Forum | Fri Sep 08 21:49:24 EDT 2017 | sbar5781
Hello, I have a few PCB boards i am trying to be manufactured that are miniaturized medical devices. Thus they require IPC Class 3 Specs. However as miniature devices they have limited space, including a 0.4mm pitch BGA socket, which currently has
Electronics Forum | Thu Oct 18 18:39:15 EDT 2001 | davef
Responding to your questions ... RELIABILITY OF 1% SILVER SOLDER PASTE: It�s as good as the next solder paste, all other things the same. Look at your back articles by Jennie Hang in SMT magazine. I want to say she wrote an article on the topic i
Electronics Forum | Wed Sep 29 23:54:07 EDT 1999 | Dreamsniper
Hi everyone, Greetings! I�ve got a 2-layered through-hole PCB�s having the following problems: Solder Mask peels after wave soldering at random locations and only at the bootom side of the PCB Insufficient Solder and some solder never make it to t
Electronics Forum | Wed May 22 19:10:47 EDT 2013 | anvil1021
We do a lot of these devices and I guess I am not familiar the term "Dry Solder". The QFN device is not designed to have a drain hole, but needs to have thermal vias to control heat in most cases. We have used every possible gnd pad design and modifi
Electronics Forum | Sat Oct 03 12:33:02 EDT 2015 | rushpcbuk
Electronic digital methods of determining unsoldered leads/pins Unsoldered lead or pins in a PCB or any other electronic components leads to open circuits or faulty electrical connections thus the device does not operate. Typical inspection method
Electronics Forum | Sun Aug 08 20:59:55 EDT 1999 | Dreamsniper
| | | What oven temperature should be used to reflow solder (Sn63Pb37) on a PC board (0.075" to 0.100" thickness) in 5 to 10 minutes? | | | | Profiling - tedious but important. As said, start with the paste manufacturers recomendation which is usua
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