Electronics Forum | Thu Dec 07 03:21:54 EST 2006 | Guest
Materials you see are corner bond adhesive, main purpose of this is mechanical shock absorber , it promotes additional adhession to lessen stress to solder joints incase device subjected to mechanical stress like dropping.By function, corner bond
Electronics Forum | Wed Jan 30 02:50:33 EST 2019 | electronics101
Hi Steve Thanks for coming back to me, you are correct IPC class 3 is required. We are getting great wetting onto the device but not as per IPC 3 with the wetting rising about 0.25mm. I am questioning whether it is actually possible with such a (re
Electronics Forum | Mon Jan 29 11:11:29 EST 2001 | Casey Scheu
The solder ball collapse is associated with overheating. Of coarse there's no problem taking it off, your nuking it. The problem, as your aware, is in the replacement. The machine your using is overdriving the process. The key to this repair is in
Electronics Forum | Wed Feb 28 00:01:47 EST 2007 | Muhammad Haris
Hi, The distance between the two terminations/endings/pads of 0603 (0201)is 0.15mm i.e. lesser than than the distance between the 0603 and through hole i.e. 0.5mm My ques is that, then why its termination doesnot short as it has a minimum distance.A
Electronics Forum | Fri Oct 24 20:53:53 EDT 2003 | pranav
I am re-designing a MLB Printed Circuit Board which has thro' hole chips and a BGA. I am planning to go for reflow soldering for the BGA on one side and wave soldering for the thro' hole parts on the opposite side. Is there any concern or any sequenc
Electronics Forum | Thu Mar 29 02:46:25 EDT 2012 | johndoe0222
My company is doing a project with a lot of QFN. The question that we are not sure is how to properly solder a QFN on a PCB. QA says The alignment tab on the side of the QFN should have a physical solder from the board, like a leaded chip. After refl
Electronics Forum | Mon Mar 12 13:08:17 EST 2001 | johnwatt
Daniel, what type of wave set up do you have ?, are you rnning a chip wave and what are your preheat's / fluxes that your using. One thing I was wondering is at what angle your running onto the wave, perhap's you PGA is shadowing your components in
Electronics Forum | Mon May 25 21:10:28 EDT 2009 | padawanlinuxero
Hello !! I have a problem with my wave solder oven, in one of the products we made has connectors on one side of the pcb and in the other one has SMT components the process is kinda tricky on the SMT components we use an adhesive and put to the refl
Electronics Forum | Tue May 26 06:56:40 EDT 2009 | xinxi
Hi! From your post, it seem like the wave did not really touch the component. You probably need to get the both wave height correct and that it hits the component.It is normal for solder to come through the PCB when using chip wave. The through-hole
Electronics Forum | Sat Sep 06 05:11:21 EDT 2014 | padmalathab
Hi Thanks for responding to my query. Our PCB Assembly consists of both SMD and THD components. Also,assembly will be done by machine as well as Hand soldering based on the requirement. I request you to suggest Poka yoka tool to read the value of
