Electronics Forum | Fri Sep 25 05:03:26 EDT 2020 | ameenullakhan
Hi Srini, Thanks a lot. Please share me the design you will be implementing. It will be very helpful. Regards, Ameen
Electronics Forum | Tue Sep 14 05:46:51 EDT 2021 | denism
To measure two 0201 pads, you need to solder two thermocouples for each component pin on different segments. Thermocouple wire should be 36AWG.
Electronics Forum | Mon Jan 09 12:34:00 EST 2023 | stephendo
Molten metal has a high surface tension. If the pads are uneven you can have uneven forces. Decades ago if part were not placed exactly right, they would come out of the oven centered. (or tombstoned)
Electronics Forum | Tue Jan 10 18:46:30 EST 2023 | cyber_wolf
Check your 500 nozzles under a microscope very closely for tip damage, clogs, or un-smooth spring action. 1 bad nozzle can make it seem like you have a chronic problem. If you have knock off nozzles (chinese reproductions) that can be an additional i
Electronics Forum | Tue Jan 10 19:02:55 EST 2023 | crystalw4280
Okay that makes sense actually. I was under that impression anyways but just wanted some verification from other people and places. Yeah then also are not all jukey nozzles. Working on trying to get some juicy approved at least or authentic if the pr
Electronics Forum | Thu Jan 12 11:26:48 EST 2023 | leeg
We have issues with different Juki machines needing different nozzles for 0402 and 0201 components, some 0402s need a 502 and then on another machine it needs a 503. We went away from the 500 nozzle series
Electronics Forum | Wed Apr 09 17:39:30 EDT 2008 | diesel_1t
Hi. I know that this is one of the mos common threads here, I have been doing some research, but i didn't find any similar. The main issue is that I have seen tombstoning since two weeks ago, it is more characteristic on 0603 resistors (Stackpole e
Electronics Forum | Fri Dec 08 11:08:03 EST 2000 | Antonio
Ok fellas, tell me how you'd fix this! I'm having melf connectors that are tombstoning in the wave, NOT the reflow, the wave. I've never seen this before. All other parameters are the same...solder, preheats, placements, the board, building humidi
Electronics Forum | Thu Aug 24 09:41:46 EDT 2000 | Dr. Ning-Cheng Lee
The optimal profile to choose is determined by the following factors, (1) thermal mass and distribution across the board, (2) reflow temperature range needed for a particular alloy, (3) the nature of flux. When the thermal mass is small, such as cell
Electronics Forum | Sun Jun 10 11:31:27 EDT 2001 | nifhail
Everybody aware of the tomb-stone problem on 0402 package. I've done everything I could i.e. Profile, placement, 10 Deg placement, stencil design, but still this culprit exist. One things for sure is taht I have a very bad pad size for 0402 ( 25 mil
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