Electronics Forum | Tue Jan 05 13:53:35 EST 1999 | Chrys
| Hi All, | I work with CNC Routers . | I use full perimeter routing of double sided populated panels, in a high volume/ mix application environment. We chose stand alone routing machines for our facility . | I'm interested in your input for bette
Electronics Forum | Thu Jun 14 02:00:01 EDT 2001 | ianchan
Hi mate, AOI seems great for : 1) missing 2) wrong parts 3) wrong orientation 4) x-y axis misalignment 5) upside down placement 6) etc.....? AOI shucks for : 7) unsolder (joint) defect 8) tombstone / tilt My guys are evaluating AOI m/c, for substi
Electronics Forum | Sat Dec 18 01:53:46 EST 1999 | sin
If i have problem with tombstone, first i would look at the placement of my components. if placement is 50% greater on the pad, it would be ok to reflow. even you have bad profile, you would have some other problem not tombstone. then i look at
Electronics Forum | Wed May 08 23:19:12 EDT 2002 | Jones
We currently use the Mitutoyo vision measuring machine Model #qv202-pr05f. We use it as a tool for measuring placement accuracy on both our chipshooters and glue machines. It also has the ability to check the glue dots for accurate sizing. As far as
Electronics Forum | Tue Jul 10 11:36:22 EDT 2007 | dyoungquist
Hi SMT Frog We are using an upgraded Mydata TP9-1 system to place 0402s. We do an electrical test plus mechanical centering and use the C14 tool. A few things we have observed/learned: 1) Is the machine not picking the part up out of the tape? Po
Electronics Forum | Tue Sep 13 12:00:57 EDT 2011 | swag
Flex circuits are assemblies that can be bent or twisted into shapes after assembly (flexible). When heald in panels for SMT assembly, it's difficult to get repeated x/y offsets so you need to consider fiducal placement in your design for placment m
Electronics Forum | Fri Dec 02 17:28:35 EST 2005 | ratsalad
We have a TCM-V822 over in the warehouse that had a severe head crash. If you suspect you have a bad servopack, contact Unidec. They can test it for you. If it tests bad they can rebuild it for you and you won't have to wait for months to have o
Electronics Forum | Thu Dec 10 09:09:31 EST 1998 | Earl Moon
| Hi everybody? | I heard that typical FR-4 would not acceptable for BGA application. | What is the main reason? | (thermal property? or CTE?) | Sombody please answer me the requirement of PCB substrate for PCB application. | Thanks. | | Youngho Son
Electronics Forum | Tue Jul 03 08:14:49 EDT 2001 | Stefan Witte
If you hold your board sideways in a 90 degree angle you apply a force of 1 g to your components. 1 g translates into 32 ft / sec. square. This is not too much acceleration for fearless roller coaster drivers but Melf�s and Tantalums can fall off at
Electronics Forum | Thu Nov 14 12:55:03 EST 2019 | SMTA-Tony
Very late but here's my 2 cents. Will require a custom fixture for every flex or semi-rigid flex. Depending on panel thickness; use 2 tooling hole to fixture on one axis, other tooling holes will have pullers to ensure proper placement. Even with the
