Electronics Forum | Mon Nov 15 02:45:15 EST 2010 | 89jeong
Hello. We encountered a SMD problem on PCB. It is that the lead of photocoupler is shifted after reflow and don't meet the minimum requirement of side joint length. I know this is a defect but what i want to hear the reason and the solution to prev
Electronics Forum | Sun May 27 17:27:22 EDT 2012 | jlawson
I would suggest that the pad size vs lead length vs lead pitch are helping cause issue if rest of PCB is ok From DFM , yes reducing lead length - experiement or reducing pad diameter could help. Also flux can still be issue, try fluxing part prior
Electronics Forum | Mon Jul 08 08:29:14 EDT 2013 | emeto
You can use any metric ruler to do that. Examples: Pitch 2mm x 200parts = 400mm length or Pitch 4mm x 100parts = 400mm length You can also calculate approximately how many parts you have on the tape by using formula. I don't have the formula but
Electronics Forum | Mon Dec 21 10:14:53 EST 2015 | jax
Many Manufacturers make Large board capable machines. A quick way to find them is to look for LED machines, the lengths should range from 32" to 52", although some simply manipulate the staging (clamping) area to achieve length. The trick is finding
Electronics Forum | Thu Aug 22 22:19:13 EDT 2019 | sssamw
From the picture you present, it is a pin in paste part with pin length 2.2mm (a good length for 1.6mm PCB thickness), and seems the pin tilted and touch on PCB surface, thus causes up-part. Sorry I cannot image pin tilted not before placement but i
Electronics Forum | Fri Sep 08 16:09:42 EDT 2000 | Erv
We do one of two things here; 1. We have cut up a bar of solder to different lengths, wieghts, etc. and place them on top of the offendinding floater, or 2. On selective wave pallets we will build a jig/clamp to hold down the part.
Electronics Forum | Tue Aug 22 11:25:43 EDT 2000 | Steve Thomas
Just out of curiosity, what's the maximum length print the Pro Flo is capable of? I think the Cross Flow option for the EKRAs that we use only goes up to 350mm, which is way short of what we'd need.
Electronics Forum | Fri May 19 16:47:46 EDT 2000 | Socheat Khun
Hi Ramot; I have some sugestion for you, you may want to look at part data, like lead width, pitch , length. Good Luck socheatk
Electronics Forum | Mon Feb 19 12:25:18 EST 2001 | Donnie D.
One other thing you may want to look at is your nitrgen settings and the difussers. If you don't have them correct, you can also see bridging and icicles.
Electronics Forum | Fri Jan 14 15:02:16 EST 2000 | John Thorup
Second the motion for the Stevens Products covers. They call them Gold Fingers Gloves and they are a pull-truded fibreglass product that comes in sticks. You hacksaw them to the length needed. We have many that have been through the wave thousands o
