Electronics Forum | Thu May 08 11:58:12 EDT 2003 | fmonette
Hi Chrissie, This might be old news to you but I just wanted to make sure that you are aware of all the implications of BGA rework relative to the control of moisture-sensitive components. For example, you need to keep track of the total exposure t
Electronics Forum | Wed Jun 18 19:26:39 EDT 2003 | gregoryyork
Rules of thumb :- 1. Never over flux - not necessary and waste's money. Never top flux neither 2. Top Board temp. around 70C - 105C or there about's pending what laminate you use. Obviously the more flux you apply the higher heat required/denser PC
Electronics Forum | Wed Jun 11 09:59:19 EDT 2003 | jgregory
Hello all, We have came into this problem that I wanted to get everyone's input on from the SMTNET. We have roughly four pieces of equipment from a major manufacturer that we purchased from various brokers. We have two reflow ovens, one wave solder,
Electronics Forum | Wed Jun 11 22:56:10 EDT 2003 | jgregory
OK Terrapin, Here it is, roughly half hour after I vented on your reply. I still don't like your attitude to "school" me on this subject. I've been doing this way too long. But I decided that I would satisfy your attempt at "learnin" me. First, I
Electronics Forum | Wed Aug 27 14:41:49 EDT 2003 | Stephen
Have you checked the temperature profile at the balls? Just because a recipe works "fine most of the time" does not mean it is optimum. Do you have a machine that can measure co-planarity? If I get time I plan on using the MPA to look at co-plana
Electronics Forum | Thu Aug 21 22:10:07 EDT 2003 | adlsmt
Well, for some reason the board house will pay for the boards but has some issue with paying for the parts on them. Why am I not supprised? Perhaps I have mis-diagnosed the problem. We have found two different board p/n's with the same type of defec
Electronics Forum | Thu Aug 21 17:09:09 EDT 2003 | justin
Wow, You're breaking into some fun stuff. Holding WIP is expensive, ineffective, and typically gives you more quality headaches than you know what to do with. What are you going to do with your partially built up boards? Are you going to hand sold
Electronics Forum | Wed Jan 28 09:46:27 EST 2004 | stefwitt
I don�t know, what you are going to do with this type of request. Are you indeed making up your mind because a few readers give their hands up or down? All the machines listed above do a good job. However, consider that you will be married for a long
Electronics Forum | Thu Feb 05 08:08:46 EST 2004 | stefwitt
To my point of view, you should be aware of some issues. Manual taping machines with a foot switch for tape advancement require quite a few adjustments before you start the job, like: Tape width adjustment, component rail adjustment, pitch setting,
Electronics Forum | Tue May 25 20:51:20 EDT 2004 | Grant
Hi, Thanks for the info, and this really helps a lot. So the change over time is really just loading the different feeders? That does not seem like too much trouble. How does the X and Y correction on the HSP effect real world placement accuracy? D
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