Electronics Forum | Thu Jul 14 04:28:45 EDT 2005 | lloyd
Folks, Thanks for all the info and suggestions but let me add a bit more to the pot. Our products work in a harsh environment and are classed as safety critical. Customer returns are our biggest concern, we don't get very many and feeling here seem
Electronics Forum | Fri Oct 14 09:58:13 EDT 2005 | patrickbruneel
Here's what I believe is happening. The main difference between the HASL boards and the gold plated boards is that HASL boards are pre-soldered. HASL boards need very little flux activity to get good hole fill and the machine settings have a wide pro
Electronics Forum | Mon Feb 27 17:08:15 EST 2006 | GS
3,5 ugr/cm2 NaCl) or power components, or Raw PCB. Nothing with the solder process or fluxes. Ion Chromatography analysis was necessary to help understanding of contamination origin. When occasionally we run TIC on a NC assembled PBA (Paste ROL0 or
Electronics Forum | Sat Mar 24 05:25:07 EDT 2007 | mika
Thanks aj, Ohh I wish that there was a way to post a picture in this forum or a possibility to attach the datasheet... Which BTW does not have any recommendation of "how to". This package does not have the "center thermal pad" like a QFN or MLF pack
Electronics Forum | Thu Mar 29 13:15:18 EDT 2007 | adrian_nishimoto
We always apply solder paste to either the PCB pads or the BGA balls. I have found that only using liquid or tacky flux does not always ensure proper wetting of the pads. Also The BGA sits closer to the PCB making cleaning and endoscopic inspection
Electronics Forum | Wed May 06 08:15:39 EDT 2009 | xinxi
Hi all, I understand that this forum is more to surface mount discussion. But I am eager in sorting out the spray fluxer problem. Please provide me with any ideas that you think might cause it. I have a problem in starting up/initialising the wave
Electronics Forum | Thu Feb 18 14:42:38 EST 2010 | djsmith1000
Hi everyone, First post here. I am completely new to smt as well. We are a small startup and would like improve our in-house smt assembly capability from manual assembly. We are looking at small production runs, initially about a total of 200 board
Electronics Forum | Wed May 22 14:17:13 EDT 2013 | ericrr
As the subject says, the trouble started when the computer (Windows 98) drove me nuts starting up in the morning. The Engineer comes along NEVER ASK ME ANYTHING, and thinks the network should have some network protocol (Example equivalent to TCP/IP
Electronics Forum | Mon Sep 24 12:58:31 EDT 2018 | vincentl
We are attaching 0.50mm diameter SAC 305 solder balls onto 0.38 diameter Au plated pins placed at a 0.80mm pitch (pins are pressed into a plastic insulator). A tacky flux is then stenciled onto the pins using a stencil with.a 0.38mm diameter aperture
Electronics Forum | Wed Oct 17 17:36:32 EDT 2018 | davidsmullins
Thanks for all the input! I should clarify a couple things. We are a contract manufacturer; we simply build to our customer's design prints. This particular board, we outsourced because of some requirements for processes we don't do in-house. So, we
