Electronics Forum | Wed Mar 30 15:15:03 EST 2005 | chunks
This is a pet peeve of mine. The paste height requirement is generally asked because the customer has no clue about screen printing, but knows to ask this question. If he did know even a little about printing, he�d ask you to assure the �volume� of
Electronics Forum | Thu Sep 14 06:18:00 EDT 2023 | deniseburton
Hello, mcdvoice It seems like your Juki RS-1R machine's laser height calibration may be off. When measuring a 0402 resistor, it consistently reports heights around -0.60 to -0.70, causing pickup issues during production. Manually adjusting it to -
Electronics Forum | Tue May 19 12:09:08 EDT 2020 | greezmky
Thank you all that contributed to the troubleshooting! I measured the height of 10+ parts with calipers and found the average to be around 2.15mm. In the program height was set to 2.42mm. I reduced the height to 2.15mm. I have since ran 561 boards
Electronics Forum | Fri May 08 17:55:37 EDT 2020 | cyber_wolf
The squish is determined by the spring in the nozzle. If Z0 or table level is out, you would see it on more than one component..most likely Make sure board thickness and component height are correct. Also make sure you have board support installe
Electronics Forum | Thu Dec 11 23:38:44 EST 2003 | liang
Thank you Stefan for your help! our machine is hs50.you are right we means components are not placed on board.we can found the part around the loctation.i found bearing is dirty.i clean it with threebond.it can work well. but i want to know the rootc
Electronics Forum | Thu May 07 16:10:37 EDT 2020 | greezmky
Being new to the industry, the question is how much squish should I see once the part is pushed into the paste? Is there a recommended offset to create the perfect impression in the paste? I did notice yesterday that the height called out in the pro
Electronics Forum | Wed May 06 18:15:03 EDT 2020 | travishemen
I thought i posted this last night. The easiest way I can think of to see what nozzle is being used is to put the machine in step mode and do one part at a time. Also the levelness of the table and Z0 could be suspect. On a CP643 this can get out
Electronics Forum | Wed Jan 30 03:01:39 EST 2019 | robl
You could use a stepped stencil around the parts you're having issues with to add a greater paste deposit to them and not the rest, or slightly elongate the apertures and overprint, but this may lead to solder balling.
Electronics Forum | Wed Jan 30 13:17:22 EST 2019 | slthomas
In addition to robl's suggestions, I would look at the footprint on the board to make sure it meets the recommended dimensions. Abnormal layouts, particularly when pads extend under the component too far, can be problematic both by lifting the part
Electronics Forum | Wed Nov 12 04:34:17 EST 2008 | kywl
Hi all, Assuming that i were to design a PCB and there are multiple components, what is the minimum spacing required to ensure that i won't have problems in my SMT process later on? Also, is there a minimum component stand-off height spec as well?
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