Electronics Forum | Tue May 21 15:36:22 EDT 2019 | gregoireg
Thanks to @davef and @Evtimov for trying to help. It's useful but not exactly the answers I would like to get. I'm going to reformulate my question. I'm writing in mm so that it's more precise: I have a 0.12mm-thick stencil for some 0.4mm-pitch QFN
Electronics Forum | Thu Jul 25 16:20:59 EDT 2019 | bobpan
Top red led is on or off depending on version of tep board. The green leds light when the transport sensor that it communitcates with is seeing a board over it. Tep controller init failure can be one of the following. 1. Check reseat tep card and
Electronics Forum | Wed Sep 04 13:32:22 EDT 2019 | bobpan
Try these things: 1. Do a function 30....your nozzle height should consistently be around 200 +/-20....but whatever number it does find it shouldn't change. (with nozzle on) 2. Most times its the z-bellows....an old z bellows that has a worn out spri
Electronics Forum | Thu Sep 26 11:53:40 EDT 2019 | scotceltic
Experiencing some solder balls on an SSO-36 package. Things I am planning on checking are as follows: (not necesarilly in this order) I am just looking for a sanity check to see if you would try other things to help ? 1) Reflow profile. I have he
Electronics Forum | Fri Sep 27 15:14:04 EDT 2019 | dilogic
Just one more thought - we had an issue with +12V supply for VME rack. One tantalum cap in the DC/DC converter module for linear encoder interpolator shorted it out, but oddly enough - not always. We ended up hooking scope to all PSU voltages and whe
Electronics Forum | Mon Oct 07 23:04:05 EDT 2019 | SMTA-David
Hi, I have a semi-Auto paste stencil machine and use laser cut stainless stencil with T4 paste. When I start pasting boards the paste covers the pads and is well defined. Throughout the job we have been having some issues with feeder on pick and pl
Electronics Forum | Fri Nov 22 10:24:28 EST 2019 | rgduval
When you swapped the MOT card, did the proble move to another axis? I'm guessing no, but, wanted to clarify. If the problem did not move, you either have an x-motor problem, x-motor counter problem, or x-transducer problem as noted. Or, a cable pr
Electronics Forum | Thu Dec 05 05:39:05 EST 2019 | oxygensmd
I know your application isn't BGA but the data sheet also mention about the peak temperature - 235 Celsius. For the LEDs you can reach higher temperature and I recommend to reach 225-235 Celsius. You will get significantly better results because the
Electronics Forum | Wed Dec 11 06:47:33 EST 2019 | ameenullakhan
Dear Friends, Need your valuable feedback on how to identify the component is ok or not for manufacturing. Issue : We have parts which are more than 5 years old.And management want us to qualify this parts for production. We presently use below me
Electronics Forum | Mon Dec 30 12:55:37 EST 2019 | emeto
We saw your profile, which in my opinion looks alright based on the guideline from the vendor. Can you tell us more about the joints that you cleaned? Are they showing nice wetting and nice and shiny finish? How about your stencil thickness? From my
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