Electronics Forum | Tue Jul 24 10:29:10 EDT 2007 | ed_faranda
Is there a reason why you want to wash the board before wave?!?!? What is your process flow? I run bottom side of my boards first, then top just to make it easier to setup (easier to put those support pins around those smaller components). But,
Electronics Forum | Thu Aug 02 15:15:52 EDT 2007 | realchunks
Yes I have. Leaded toys, anti-freeze toothpaste, cardboard biscuits, glue-less tires... the list goes on. And it's only about 1/1000th of what is caught. But in China's defense, why not sell this stuff to the U.S.? They boost their economy and ki
Electronics Forum | Tue Jul 31 08:05:12 EDT 2007 | aj
Hi all, I was just wondering if everyone has experienced a significant rise in cost of solder bar & paste over the last 6 months or so. I use Alpha SACX and we have seen roughly 50% increase in cost . Just wondering what others are paying per kg?
Electronics Forum | Fri Aug 10 14:43:27 EDT 2007 | judym
When running some double sided reflow boards through the Heller oven, some of the caps/ res's are falling off the bottom side of the board. I understand if the parts are too heavy they wont stay in the molten solder, but these particular parts are no
Electronics Forum | Mon Aug 20 09:33:25 EDT 2007 | stepheniii
Your lighting would have to be pretty bad for it to be an issue. My gut instinct tells me you have bigger systemic issues. Operators will either be your best friend or your worst enemy. What percentage of boards have contamination? You might have t
Electronics Forum | Thu Aug 16 22:12:41 EDT 2007 | davef
There is limited benefit to silk screen legends. They cost ~$45 a side per batch. There is benefit to some board users in having reference designator and orientation markings as an aid in test and repair actions. There is no reason these markings
Electronics Forum | Fri Aug 17 10:15:54 EDT 2007 | jdengler
Good documentation would allow you to make the product without silkscreen. Our operators are trained to use our documentation and not the silkscreen. Silkscreen can be hard to use on many boards and could actually lead to mistakes. Silkscreen is m
Electronics Forum | Fri Aug 24 12:20:41 EDT 2007 | petep
I have an MSL3 part (a relay) supplied in tape and reel. From what I am able to determine, these parts require baking at 257 degrees F for a minimum of 8 hours once the integrity of the seal is broken for over 168 hours. How are parts baked at th
Electronics Forum | Fri Aug 24 15:06:11 EDT 2007 | stepheniii
What kind of boards are they? Unless they are very simple boards, you won't be able to just replace every TH component with a SM equivalent. The inherent LCR characteristics of the board will change I think the normal way would be not to change the
Electronics Forum | Wed Aug 29 02:21:42 EDT 2007 | jgrootkoerkamp
It is a lead free process with sac305. We use goldfinish FR4 boards. Preheat is between 110 and 115 degrees. I am sure it is a moisture problem because longer stored boards have more blowholes. What is the maxium period to store the boards without
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