Electronics Forum | Tue Aug 23 13:44:46 EDT 2022 | jojoled
Can anybody recomend a (LED-safe) flux removing/cleaning liquid, which can be used in ultrasonic cleaner in immersive application? After using one product I have been told, that none of the top suppliers of chemicals have this kind of liquid (subject
Electronics Forum | Fri Apr 17 21:46:18 EDT 1998 | Matthias Mansfeld
I plan to design a multichip module which contains 1 chip with about 200 pads and 2 chips with about 50 pads, no other components.The whole module shall replace as intermediate solution a single chip CPU in QFP208. Thus, the MCM itself must have t
Electronics Forum | Fri Apr 08 09:32:09 EDT 2005 | bystrom123
We are using a low end Air vac system to place the BGA's. We have X ray we can use. Our CGA's as well use this system. They are one off parts that are above the 20K a piece range. So I have been tasked with making sure all of these procedures are the
Electronics Forum | Sat Jul 03 00:58:57 EDT 2004 | KEN
so what did we do before X-ray? sound process shouldn't need to rely on inspection. Extended soaks can be used to burn off high temp volatiles but I have never heard of 5 minutes! I have used 90-120 sec. to reduce solder splatter....but haven't do
Electronics Forum | Thu Feb 10 10:28:56 EST 2000 | Russ
Okay, Okay, here is the rest of the story! These boards were definitely plated, reworked to HASL, The component that is the most succeptable is a 160 pin QFP .5mm pitch. This component has nickel/iron lead frame. Significantly reduced apertures (1
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