Electronics Forum | Fri Jun 02 17:19:56 EDT 2000 | Big K
I am currently experiencing several problems with QFP's on one of our IP3's. The first problem is with QFP240 devices. We are experiencing a high reject rate with these parts when using vision type 100. What appears to happen is that the vision syste
Electronics Forum | Mon Jun 18 01:09:03 EDT 2001 | Dean Stadem
Igmar, If these parts are epoxied in place, and subsequently wave soldered, I would bet you a cup of coffee that they are cracking due to the thermal shock of the wave. Typically there is a valley or dip in the temperature after the pre-heat in the w
Electronics Forum | Fri May 24 11:49:55 EDT 2002 | stefwitt
Again, I would like to refer to the tape dimensions and their deviations. In an 8 mm tape the distance from the sprocket holes to the tape pocket is 3.5 mm +/- 0.05 mm. This tolerance is easy to achieve, because in the manufacturing process of the ta
Electronics Forum | Wed Nov 09 07:31:41 EST 2005 | smtspecialist
The part I'm having problem with is a simple 0805 resistor 0R the inspection is done optical not mechanical and 75% of the rejects rate has the message: one or too many bad leads found. and the other 25% the messages will give a Background or Contras
Electronics Forum | Mon Sep 28 09:31:43 EDT 2015 | proceng1
Proc > > My field service back ground included > Electrovert so I know reflow electrical quite > well. I've worked on Heller, Conceptronic and > Vitronics over the last few years and really > there isn't a huge difference if you can read a > sc
Electronics Forum | Thu Sep 26 23:14:25 EDT 2013 | zsoden
We picked up this old (circa late 80s) Seho 1135 machine last year for next to nothing. It needed a bit of TLC to bring it back to working order but it's 99% working now. The only problem left is that we cannot get sufficient height from the delta wa
Electronics Forum | Mon Jun 25 20:47:09 EDT 2001 | davef
Much of the focus of pick & place machine supplier development efforts seems to directed towards either: * Head location detection, adjustment, and control. OR * Component location prior to pick-up. OR * Component position error correction after pick
Electronics Forum | Thu Apr 25 05:56:32 EDT 2019 | pdrirrework
Hello, Have you had a look into our Focused IR Rework systems? A popular alternative to the convectional Rework systems. Our IR-E3M (Micro) would be perfect for your applciation and on one machine you will have the capability of Reworking BGAs up to
Electronics Forum | Thu Aug 06 09:51:20 EDT 1998 | Bob Willis
This text may be of interest to any one with tin lead spots Guide to Solder Spots - A New Plague in Manufacture ? So what are solder spots ? They appear to be the next big problem in modern reflow assembly in fact in any process that involves solder
