Electronics Forum | Tue Dec 15 17:02:35 EST 1998 | Earl Moon
| Okay here is the deal. I am fairly new to the company here, but one thing I have noticed is that we read way to many fiducials, in my opinon anyway. One for example is this. One assembly was reading 17 fids. Smallest pitch was .25mil I say you
Electronics Forum | Thu Jun 16 08:31:15 EDT 2005 | jh0n!
The most part I have the most difficulty with is a 16mil QFN. We found that reducing stencil thickness to 4mil, and reducing aperatures for the IC by 20%, and setting local fiducials to the IC helped immensely. We used to get 75% or more bridged ou
Electronics Forum | Thu Oct 15 14:43:58 EDT 2009 | dilogic
I assume your global fiducials are on the panel, but outside circuit area. If you circuits are not placed exactly as in the program, globals would be located, but locals won't. At least, older UPS versions work like that. - Deni P.S. By the way, as
Electronics Forum | Tue Nov 05 08:17:54 EST 2013 | bdamico
Hello Irene, My name is Brian D'Amico, I am the president of MIRTEC USA. I noticed your posting on this forum and I would like to offer some guidance. First, I would like to ask which camera is installed on your machines. The MV-2HTL could either b
Electronics Forum | Wed Nov 02 08:57:34 EST 2005 | russ
Don't have any graphics but they are relatively simple. 1. They do need to be put into the copper. 2. We usually use a 1mm circle but many other shapes and sizes are useable but I know that all machine will take a circle. 3. Maintain a keepout area
Electronics Forum | Sat Feb 20 09:41:51 EST 1999 | Andy
| We are using .040" diameter fiducials (global and local) on our boards. They are solder covered and HASL. I get batches of boards where the p&p vision system has trouble reading the fiducial. The fiducial looks dark on the screen. The board ven
Electronics Forum | Thu Oct 19 16:12:59 EDT 2006 | sliebl
Our machines can't use 'cad data' for fids. I'm intimately familiar with these machines as I've been using them for 11 years. Most likely, it's a limitation of our machines/software, whereby it requires symetrical local fids. When we place a PCB on t
Electronics Forum | Tue Dec 05 13:34:51 EST 2000 | NickMata
Hello all, at the present I have some product onto which I glue backside components. I dispense a pattern of "witness" to use as a visual cue as to the quality of the dispensed glue dots. A problem which I have encountered is that operators will oft
Electronics Forum | Thu Dec 12 00:36:11 EST 2002 | Frank
We had one of these years ago. We had trouble with it recognizing fiducials consistently, but other than that it ran good. This assumes that the left head, which is mechanical centering, is working good. And I believe that the minimum component
Electronics Forum | Mon Feb 16 01:26:30 EST 2004 | Frank
The 575 was based on the 570 machine. The 570 was Juki's first laser centered machine. It can do 0402 and ICs with a pitch of 0.65mm or greater. The 575, was a re-vamped 570 that Zevatech came up with. Juki played no part in the 575. Zevatech ad
