Electronics Forum | Wed Jan 26 21:35:54 EST 2000 | Dave F
Hey Nanc: Don't go rushing into this up-dating you spec thing now. ;-) Those books must look worse than a "Playboy" centerfold at Attica. Try: http://www.lmco.com/workmanship/index.html Ta Dave F
Electronics Forum | Wed Jan 26 13:43:06 EST 2000 | Tuan Bui
221 degree C) to achieve good wetting and shiny filet. Comments and recommedations are welcome.
Electronics Forum | Wed Jan 26 13:18:51 EST 2000 | Tom Ravener
It will be interesting to hear from customers (users) "Brokers" and "Rebuilder/Sellers" alike. Feedback please and no spams.
Electronics Forum | Wed Jan 26 10:23:33 EST 2000 | John Luckham
Having only just started to deal with BGA packages, I was wondering if anyone could advise me on possible aperture reductions when screen-printing boards for BGA placement
Electronics Forum | Wed Jan 26 13:02:13 EST 2000 | Wolfgang Busko
We don�t distinguish between BGA, finepitch or other parts; they all get the same aperture reduction of 15% which is determined by the finepitch process. We use only PBGAs with eutectic balls. Wolfgang
Electronics Forum | Wed Feb 02 12:55:32 EST 2000 | David Brown
I have used a 15 to 20 % reduction on PBGAs to reduce the possibility of shorting. On CBGAs and CCGAs I use a One to One aperture.
Electronics Forum | Wed Jan 26 07:55:17 EST 2000 | Dave F
Mikel: There's a lot of ways to break a glass diode. Poor material handling High placement force Thermal stress Board flex So, where is this damage occuring? Dave F
Electronics Forum | Wed Jan 26 09:01:31 EST 2000 | Roni H.
I recommend you to test at least 2 other vendors for the diode; you can find that the problem is diode manufacturing, or else, you will find out that you have a proccess problem for sure. There is no use to start investigating your proccess before y
Electronics Forum | Wed Jan 26 07:48:37 EST 2000 | Dave F
Maddog: Most placement machines require shutting-down the placement process to exchange a feeder. Dave F
Electronics Forum | Wed Jan 26 19:28:53 EST 2000 | k.s park
sorry.I didn't mention what kind of machine. it 's a machine for inspection of printing condition after printing machine.
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