Electronics Forum | Fri Nov 25 15:52:40 EST 2011 | davef
"IPC-2221 - Generic Standard On Printed Board Design" talks to fiducials. Anther take on fiducials says they shall meet the following requirements. * Make fiducials 1 - 1.5 mm diameter circle. * Cover fiducials with tin. * Keep solder mask opening at
Electronics Forum | Mon Dec 05 09:04:25 EST 2011 | haiae
I just buy a used Contact 3AV machine. Afer fixed some things I think the machine can be ready to run and in fact for first time the machine power up, pass all self testing, homing is done, moving of table, heads, actuator is good, pneumatic function
Electronics Forum | Sun Mar 04 02:21:40 EST 2012 | eadthem
Most PNP machines and AOI machines shuld have a X out feature. For us we use to use whiteout pens to mark the badsense spot. Now atm we use white lables, becuase there is no dry time. The lables have there own issues, They cause overpasteing issues
Electronics Forum | Sun Mar 04 02:39:27 EST 2012 | eadthem
I don't have our DEK printer part numbers memorized, In general we have a older machine running NT4.0 . It has 2Di inspection but we never use it because you can only inspect/setup 1 camera shot at once, making for very long programming. Our newer D
Electronics Forum | Fri May 18 10:43:32 EDT 2012 | davef
Umar Chapter 7 of IPC-HDBK-830, Guidelines for Design, Selection and Application of Conformal Coatings deals with compatibility of the different materials in the chain. Have you: * Tested your bare boards at incoming for cleanliness with your Omega
Electronics Forum | Fri Sep 14 19:28:53 EDT 2012 | jlawson
Another oven maker not so famous in USA probably but very strong in EU and high end Asia companies is Rehm Thermal Systems (germany), you should take a look..... They have many years in Reflow same time as Heller been in business, but they use highe
Electronics Forum | Sat Sep 29 02:58:18 EDT 2012 | ericrr
I tried to look for "H890" on Internet and went nuts, (Thanks to Google) I would think H890 is part of a diode manufacturer part number. Have you tested it for a diode function? or maybe you have this is why you want a replacement. Tantalum capacito
Electronics Forum | Thu Feb 07 12:37:42 EST 2013 | phase1
Resistor/Caps using package library Match-45% White pixel solder-25% search window-25% Tant caps custom teach checking for pattern/value Do you also put a polarity band check in there or just check the value and click the polarity box? same passing
Electronics Forum | Thu Feb 28 10:22:46 EST 2013 | rway
If your silkscreen is too close to the toes of your leads, you can bring the lead bank inspection box in a little bit to compensate. I haven't had many issues with tantalum caps. I inspect those under white light with no filter just fine, but then
Electronics Forum | Thu Aug 08 11:58:25 EDT 2013 | rway
I am not that familiar with the older systems. The software should be supported on both old and new alike unless you are limited by the operating system, but the camera will obviously have a lower resolution and perhaps the filtering is not quite as