Electronics Forum: corners (Page 8 of 66)

Component Pin 1 marking

Electronics Forum | Tue Mar 04 20:47:48 EST 2008 | davef

Available on the web, JEDEC PUBLICATION 95, DESIGN GUIDE 4.14, Ball Grid Array Package (BGA), Figure 4.14-3, Note 10: A1 corner must be identified by chamfer, ink, mark, metalized markings, indentation or other feature of package body, lid or integra

Gemline PPS help PLEASE

Electronics Forum | Mon Jun 30 00:50:57 EDT 2008 | benefon

Hi There are many ways of doing this but I usually transpose the coordinates to the lower right hand corner of the sub-panel that is situated at the lower right hand corner, because the reference point of the machine is the right hand side locate pi

Regarding BGA Pad Lifting

Electronics Forum | Tue Feb 09 17:11:14 EST 2016 | vaghelarajeshh

I have pad lift issue during the rework on Motorola box DSR600 which has the fault of No log and No boot. Pad lifting pattern is on four corners. I have checked the temeprature difference between the corners which is sam as center. I have attache

Has anyone done breakaway tabs with v-score on both sides instead of mouse-bites?

Electronics Forum | Wed Jul 26 11:13:06 EDT 2017 | jdengler

It can be done and is done all the time. You need to check with your customer about this since you will not have clean square corners along the edge. If they are snapping the boards into a holder they may need the square corners to securely hold th

SMT Connectors: Corner legs lifts.

Electronics Forum | Thu Jan 16 05:10:46 EST 2020 | soupy

Hej, we have some connectors placed on our PCB. 2*30legs 0.5 After reflow we detect lifted legs in the AOI. Always on the outer corners. Is this something ye have experienced? And any possible solutions? Stuff we have tried: Checking the cop

Polarity for SMT Devices

Electronics Forum | Tue May 28 21:00:59 EDT 2002 | davef

That is the rub here, isn�t it? For those posting, it�s easier [but much slower] to start a new thread than to search the archives. [And posters could view their issue so unique and novel that it could never have been discussed several years earlie

Re: Wavesoldering of PLCC44 package

Electronics Forum | Fri Feb 25 16:06:51 EST 2000 | Dave F

Istv�n: Given a choice, I�d run second side PLCC44s at 90� to the wave. As far as thieves are concerned, I�d have two, mirror images of each other. Unlike most, these thieves are not connected to pads. They are out-side of the last pad on the sid

PCB snap-offs

Electronics Forum | Tue Aug 29 10:44:01 EDT 2000 | Dougie

Hi, This a dull question I know, but I have a boss who want's an answer... PCB snap-offs: * Design keep them to a minimun to save cost on the PCB * Production want more to stabilise the board when it goes through the process as some PCBs partially

Re: Wavesoldering of PLCC44 package

Electronics Forum | Fri Feb 25 16:06:51 EST 2000 | Dave F

Istv�n: Given a choice, I�d run second side PLCC44s at 90� to the wave. As far as thieves are concerned, I�d have two, mirror images of each other. Unlike most, these thieves are not connected to pads. They are out-side of the last pad on the sid

Missalingment 0402 Capasitor by Vision on TCM1000

Electronics Forum | Fri Oct 01 06:02:43 EDT 1999 | Bach Huss

Hi, We are running 0402 component on the TCM1000 and we find that teher will be missalignment on 0402 Capositor. We have identified that the missalignment is caused by the wrong information from the vision system while doing vision centering. The sy


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