Electronics Forum | Tue Jan 08 11:34:23 EST 2019 | robl
Hi Mermar, you're welcome.
Electronics Forum | Thu Nov 29 01:37:30 EST 2018 | cannizzaro
I think silicone mask is ok, This is so that after soldering, you can use these holes to fit other components later. This peelable layer is needed, unless you want to solder each component manually--From ALLPCB
Electronics Forum | Thu Nov 29 12:42:18 EST 2018 | emeto
Robl, I like this underfilm. Do you think you should place it in the middle of the part? I am curious if they provided some advice to you as how to use it.
Electronics Forum | Thu Nov 29 13:22:39 EST 2018 | roblackey
Hi Evtimov, For BGA's you place 4 on each side right outside the edge balls and it pulls the case down and a bit is pulled between the balls on reflow. Not tried gluing a crystal (they only gave me a strip to play with)
Electronics Forum | Wed Nov 28 16:19:11 EST 2018 | emeto
Hello all, I have a crystal that breaks in spinning test with several G. I need to secure this part and I am wondering what kind of solution you might have. I was thinking some silicone coating that can be dispensed.Or do you think an underfill migh
Electronics Forum | Thu Nov 29 03:19:46 EST 2018 | robl
You may want to look at a product called place & bond underfilm. It is essentially a SMD tape and reel placed pad that acts like underfill when going through reflow. I got some samples from an APP tech day and had a play and it bonds very well. Y
Electronics Forum | Fri Sep 13 06:48:51 EDT 2013 | JB
Hello, anyone know whats wrong with our Pick & Place machine? we have a Samsung CP40CV and on head 3 its is getting a lot of vibrations and makes the full head vibrate, sometimes it make a noise from the vibrations.
Electronics Forum | Mon Dec 28 09:24:41 EST 1998 | Mike Zurn
Does anyone have any experience with vibration testing of BGA packages and assemblies? We are starting to design BGA's into some of our products and we have not found very much information on vibrational test results. Any information will be helpfu
Electronics Forum | Sat Aug 03 03:03:06 EDT 2019 | alexeyzb
There are no many moving parts in oven. Usially fan can give some vibration. Every heating zone have fan, so you can turn off them one by one and check vibration.
Electronics Forum | Mon Aug 05 17:50:20 EDT 2019 | travishemen
We have a Rehm oven that can vibrate hard enough to shift parts on the board. The vibration is due to flux build up on the exhaust blower. If we don't clean it regularly we start to see parts shifting in the oven.
