Electronics Forum | Sun Sep 12 08:20:04 EDT 1999 | se
| | | | hi, i m college student. i m currently doing my Final year project in PCB drilling. the main task is to design auto feeder which allign the PCB properly in position before drilling take place. the close tolerance becomes a big problem to the
Electronics Forum | Thu Aug 09 12:36:26 EDT 2001 | Michael Parker
Adam- Mikie here. I too am placing 2 PBGA sockets on an assembly but they aren't mirror imaged. Thanks to the SMT Gods for that one. You say you added more paste to solve for open solder. Do you have x-ray? Were the alignments perfect? Also the part
Electronics Forum | Mon Mar 12 18:14:44 EST 2001 | reconsales
We stock over 3000 used Panasert feeders and have many parts in stock. We can also repair / calibrate your feeders with our PFA factory alignment fixture. Please provide us with an accurate description of the parts you need. Give an accurate descri
Electronics Forum | Wed Aug 20 14:16:57 EDT 2014 | jax
I have a few questions: Why are you unable to panelize an aluminum board? We run aluminum boards all the time utilizing both V-Score and Routed designs. Panelization aside, what are the issues that you run into at printing? Are you trying to print
Electronics Forum | Fri Feb 21 10:59:15 EST 2020 | slthomas
I used to work for an OEM that made professional audio equipment (studio monitors, mixing boards, etc.). The mixers required precise alignment of LEDs, switches, and pots in the sheet metal so we used aluminum alignment fixtures during wave solder. T
Electronics Forum | Thu Apr 29 10:49:05 EDT 2004 | pjc
Yes, using an illuminated magnifing glass helps. How well your board fixuring is on the table will effect print alignment on other boards loaded. 0.5mm & 0.4mm will require very good fixuring, like you can get with tooling pins if the board has non-p
Electronics Forum | Mon Dec 22 10:24:06 EST 2008 | ck_the_flip
Yes I agree with Emil that the Jig/Fixture design is crucial for alignment. The hot-bar machine I worked with came with a digital camera and monitor to aid with alignment. Other than that, the right profile (heat, pressure and dwell), and a good fl
Electronics Forum | Mon Dec 29 07:23:57 EST 2008 | ghenning
Watch out for workmanship specs. I don't believe this is covered under IPC-A-610. You may have to write your own. Alignment of the fixture and coplanarity of the bar and substrate are key. Also, pay close attention to stencil aperture and thicknes
Electronics Forum | Tue Mar 05 11:08:31 EST 2019 | mrk
Hi all, We have an assembly which features non-plated tooling holes used to align the board in a bed of nails style test fixture. This assembly is rather small, and as such, the test points are pretty small as well. We have found that some variation
Electronics Forum | Wed Dec 15 19:31:26 EST 2004 | Thomas Denison
We have a ceramic BGA that the component supplier has misaligned the spheres in the fixture so they slant .007" out of alignment from the substrate pads. When the devices are tested at the component manufacturer this alignment issue also causes the
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