Electronics Forum | Thu Sep 13 17:57:59 EDT 2001 | davef
You're correct. It is curious. Possible angles to look at are: 1 WS609 loves moisture in the air. In high humidity shops, this paste hakes-on liquid. If this is the case, you should also see slumping, resulting in fine pitch bridging, and solder
Electronics Forum | Sat Oct 13 16:42:35 EDT 2001 | kenbliss
I agree with EMC based on what you described, and they build good pallets along with a few others, a small word of caution is that pallets are bit expensive typically several hundred dollars or more each. So if you find that is the road you go, be s
Electronics Forum | Sun Dec 09 22:54:20 EST 2001 | dburr
It sound you have already discovered to root cause, flux entrapment in the via holes. Short of changing the desing, here are sone suggestions. The main thing is you have to dry out the via holes of the wet flux. Some things to try are: slow down t
Electronics Forum | Thu Dec 20 12:27:25 EST 2001 | seand
Hello Gentlemen, Dave has a good point. Proposing to move the rails for the sake of thermal integrity doesn't seem logical to address you issue. By adding a rail set you have simply added mass (almost like big heat sinks) throughout the oven vs. w
Electronics Forum | Thu Jan 24 09:53:56 EST 2002 | davef
You didn�t tell us about your solder, wave temperature profile, or the distribution of the problem. So, let�s assume the solder is near eutectic and the problem is wide spread. Wolfgang makes good points. So, let's talk a different tact. When we
Electronics Forum | Thu Jan 24 13:23:53 EST 2002 | Shawn
Thank you all very much for the responses. The solder is eutectic and the problem, as far as I can tell, has been around before I was here, 2+ years. The flow machine is a treiber with 2 bottom preheaters and 1 top. The solder pot temp is 500F +/-4F
Electronics Forum | Mon Aug 19 11:13:18 EDT 2002 | ksfacinelli
I would like to understand what different options people are using to place low volume / odd form parts. I am very familiar with the tweezers / vacuum pen method however this can be less than desirable. I am looking into a manual pick and place to
Electronics Forum | Wed Sep 18 16:56:55 EDT 2002 | stockley
I started writing a long winded explanation about SMEMA and realised that it is just as easy to write about this as it is to talk about it on the phone. It just so happens that I have recently gone through this process so I believe that your vendor
Electronics Forum | Fri Nov 01 14:27:27 EST 2002 | kenBliss
Based on this thread Shouldn�t the handling systems allow the worker to do what is needed on the board during the stated hand operation so the worker has minimal direct contact with it. Now for the non sales pitch, sales pitch. Doesn�t it make the
Electronics Forum | Sun Nov 10 14:17:40 EST 2002 | anonname457
We just went through the same comparison shopping for our company -- and we ended up choosing Juki machines -- as our comparison was between a MY9 with a hydra head and the Juki 2010 & 2020 combo. Both machines have excellent software packages and ar
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