Electronics Forum | Mon Oct 26 14:20:49 EST 1998 | Paul Brydges
Hi, My question is how close can you place smd 0603 chip resistors to each other with having an assembly problem? I know the pick and place machines don't need a lot of clearance, Iam more concerned about the court yard area around the component to
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
Electronics Forum | Mon Mar 20 13:05:23 EST 2000 | aldo r. maldonado
i am getting a lot of dimension variation in some chip parts (like coils). Using Panasonic MVII-F chip shooter, I am inspecting the part with transmissive lighting (back ligth)centering with the square shape of the part. I attempted to trick the mach
Electronics Forum | Thu Nov 30 08:09:19 EST 2006 | INGE
Hi everybody, The matter is this: after reflow, on top side leads of chip components (resistor 0805)appear some empty balls of solder. In some cases this thing is only on the lead and the solder joint seems good, in other cases this empty ball is als
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 | Fri Oct 13 07:34:49 EDT 2000 | Wolfgang Busko
If it�s in reflow, do you see where the solder is going? If it�s in wavesoldering, how�s the orientation of the parts? Wolfgang
Electronics Forum | Tue Oct 17 18:36:49 EDT 2000 | Philip Reyes
Yeo, These are possible rootcause of that defect and you can evaluate. 1. Orientation of the capacitor, maybe the cap is located behind big component. 2. Reflow profile, check the profile on that side. 3. Yes, check also the mounting force. Philip
Electronics Forum | Thu Apr 12 02:30:18 EDT 2001 | zam_bri
Thanx for your valuable feedback,Eric. Do you mind sharing with me the pad size change that you have made. I mean from what size to what size. I'm measuring mine now...cheers
Electronics Forum | Sun Apr 15 23:12:00 EDT 2001 | Eric Chua
The size i had changed from 55 x 20 mils to 42 x 20 mils. The component size i have is 40 x 20 mils ( 1mm x 0.5mm ).
Electronics Forum | Wed May 27 07:53:41 EDT 2009 | padawanlinuxero
Thanks ! I will try your recommendations, about the flux and the preheaters, yes they seems to be ok I will bring down de conveyor speed because it looks like if it is to fast is set to 3.6ft thanks again!
