Electronics Forum | Wed Oct 17 02:53:36 EDT 2001 | dszeto
The fine pitch QFP is a 240 pin one being loaded with other components on a 2.0mm thick FR4 PCB. There are 6 of this Qfp's on this PCB showing the same charactristic of bowing therfore the solder fillets are vary from the center to the end of the pa
Electronics Forum | Mon Feb 25 15:09:06 EST 2002 | jax
Kelvin, You can find the Standard acceptable levels and testing procedures from IPC. Here's a little advice from the fellas' over at PCFAB: As a guideline, we recommend that for assemblies processed with low-solids flux technology and that are not cl
Electronics Forum | Wed Sep 11 01:05:02 EDT 2002 | Brian Sloth Bentzen
Hi Again. It's funny, but the Fuji manual "SMD3 Vision Processing Referance Manual - REF-SMD3-2.0E" discribe specifically that for vision type 11 and 12 the nozzle should not protrude from the component. I believe that it should be correct then! As
Electronics Forum | Thu Mar 31 19:41:36 EST 2005 | Dreamsniper
Can anyone guide me to what test do I need to be able to identify the strength of my fine pitch component solder joint? What value is available that I can use as a reference? Say 1.5 kg, 2.0 kg, 2.5 kg etc. I would like to have my fine pitch compone
Electronics Forum | Thu Oct 08 11:33:16 EDT 2009 | cab
We are currently wirebonding MCMs with surface components located in very close proximity to wirebond pads, which are gold plated. We are ball bonding with 99.99% Au wire. Normally we do not have problems, however if product has been reflowed seve
Electronics Forum | Thu Oct 29 20:19:43 EDT 2009 | 89jeong
Hi. We are doing Au bonding on Al bond pad not Au plated. If pull strength is less than 2.0g, i think that the ball or stich may be lifted from bond pad. And the value become lower after several reflow. I expect that the surface of bond pad may be c
Electronics Forum | Fri Mar 26 23:07:07 EDT 2010 | dekhead
Just a guess: Are you printing your fiducials on the fiducial side of the board? Fidicial Side is for Vision Calibration, Bare Copper Side is for Offset Calibration (Step 5 of procedure says "copper side uppermost"). After printing 25 fiducials o
Electronics Forum | Thu Dec 20 12:14:37 EST 2012 | dhopps
If you go with MCS I would recommend using an MCS30. You would have to make sure that the E-Proms for host communication are installed in the MCS and the host module (software)as well. You would then need CadConvert to program and transfer programs
Electronics Forum | Tue Apr 21 02:28:54 EDT 2015 | dinhhuunam
Juki GL-1.... Any thoughts? I'm New to the > industry and I'm trying to buy a new screen > printer. I have two in mind, DEK and Juki. Hi Sir, I'll advise you the SJ INNOTECH Vision Screen printer Best Solution & Service for You Model HP-520S Hi
Electronics Forum | Fri Oct 01 06:02:43 EDT 1999 | Bach Huss
Hi, We are running 0402 component on the TCM1000 and we find that teher will be missalignment on 0402 Capositor. We have identified that the missalignment is caused by the wrong information from the vision system while doing vision centering. The sy