Electronics Forum | Sat Apr 03 19:58:53 EST 2004 | Ken
I have used tooling holes and fiucial registration since the late '80's. In fact if your maximum "vision" tolerance is +/- 0.05mm, your in the same ball-park as locating pins. It is true that fiducial registration is more accurate. However, I woul
Electronics Forum | Thu Oct 02 01:59:06 EDT 2008 | edmaya33
Obviously nobody can help you Jack. 1. its the camera for parts recognition ( enhanced CMOS ). 2. positioning system upgraded from ball screw to linear motor/gantry. before CPH=16500 new CPH=18000 using H12S
Electronics Forum | Fri Aug 07 20:07:16 EDT 2020 | emeto
Based on datasheet you can have balls with significant variation(twice volume) 0.13Sqr/0.19sqr = 0.46 I would suggest you tighten the machine recognition control. You will recognize BGA balls that are very different in size and reject the part. This
Electronics Forum | Tue May 14 08:08:04 EDT 2013 | emeto
Hi, BGAs should be placed by camera recognition if you have one(that helps to eliminate defects as missing balls...). If you don't, check the parameter for the laser level(height). In your case I think you should use the body as a measure level. If
Electronics Forum | Wed Oct 28 18:02:06 EST 1998 | Jeff Kline
| Does anyone have info on any of these systems (good or bad). We are looking at these 3 types for a new SMT pnp machine. We are low volume high mix. | | Thanks, Dave | I may be able to supply you with some valuable info on all three manufacture
Electronics Forum | Wed Feb 23 08:27:14 EST 2011 | cyber_wolf
I am going to disagree with that. Our QP242 wasn't worth a crap when it came to reliably placing BGA's. The lighting parameters and the programming will have you tearing your hair out. If you are doing outline recognition on small BGA's...then maybe.
Electronics Forum | Wed Jun 06 16:51:06 EDT 2001 | jax
Unless your placing micro-bga, board edge fiducials on alternating corners will provide more than enough placement correction ( Micro-bga's should also be fine depending on how your equipment maps the board ). The part data and vision recognition nee
Electronics Forum | Tue Jan 30 17:58:49 EST 2007 | flipit
Hi, I would not be too concerned about what the shape of your wirebonding fiducial is. Cross, Square, Diamond, Circle, will all work well for you. I use a "+" and a diamond. Your machine magnification will be great, so don't make the fiducials to
Electronics Forum | Thu Jun 07 07:11:41 EDT 2001 | stefwitt
8" ). For calculation of the theta angle, the global fiducials should be placed over the diagonal. Component recognition can be improved if your vision system has different light zones. The steep light should be turned off and the flat light turned
Electronics Forum | Tue Sep 28 10:29:11 EDT 1999 | Earl Moon
| Dear all, | | We've got a curious problem. We have had a major problem with BGA's occasionally being placed one to several rows or columns off the pads. We are using Universal's GSM2 platform for our general purpose placements. Our Universal re
