Electronics Forum | Tue Jun 15 22:31:06 EDT 2010 | Mag10
Depending on the how you plug the via, the void level can significantly affected. If you have via plugged from the bottom side; i.e. opposite side of the component, you will see alot of void due to entrapped air in the via hole. I found work best wh
Electronics Forum | Fri Dec 03 12:16:58 EST 2010 | vmorina
Hi Jack, I haven't progressed that much on the reflow project.I'll be working on it in two weeks. Although, I have few vendors that I've been communicating for more info about vapor phase reflow ovens. See the following list: Wenesco Sintronex AICT
Electronics Forum | Thu Jul 05 16:19:49 EDT 2012 | jorge_quijano
The PCB has 9 QFNs, distributed arround the whole board, but the ones in the edges are the ones with the problem. My stencil is 0.005" (I use to have a 0.006"), yesterday I realize after talking to my vendor that the stencil is manufactured in 2 step
Electronics Forum | Sat Jan 30 16:42:32 EST 2016 | davef
Many board fabs help their customer understand the importance of copper balance. Copper balance * http://www.multi-circuit-boards.eu/en/pcb-design-aid/copper-balance.html * http://electronics.stackexchange.com/questions/85633/what-is-copper-thiev
Electronics Forum | Wed Jul 26 11:56:40 EDT 2017 | rgduval
Ah...the joys of subjective analysis! At a glance, these pictures look fine to me. Other than the IC's, which you've indicated were masked, and, maybe R12 in the last picture and CC1384 in the first image, coating looks uniform and well distributed
Electronics Forum | Fri Jan 04 09:34:45 EST 2019 | ameenullakhan
Hi , thanks.. yes you are right.Its bot and top side. Decreasing the lower heaters and increasing the top heaters for secondary side. will this matter in convection reflow ovens. Since the heat at the end will get equally distributed. We were s
Electronics Forum | Tue Jul 21 05:08:16 EDT 2020 | arty vesna
Hi there. I am currently kinda in the same spot as the author of the thread. My choice is between Rehm VXC and Heller 1809. I am a little concerned about Heller advertising their 25cm/10 in zones. I am used to large ovens designed for high throughput
Electronics Forum | Tue Dec 22 00:11:41 EST 2020 | ttheis
Well it seems you are onto something with the vme power supply. The issue has resurfaced and I did notice the LED's on the keyboard went out when the issue occurs. I looked at the power distribution board to the left of the vme and it shows the +12V
Electronics Forum | Wed Dec 23 12:57:59 EST 2020 | ilavu
Check Power Distribution Panel Power Supply. No output or output too low for 24V, 15V, and 12V. Also, LED's on PDP LT6, LT7, LT8 , LT9, LT10, LT11 don't turn on at all, even though all fuses test OK for continuity.
Electronics Forum | Tue Jul 14 07:23:50 EDT 2020 | researchmfg
There is a misunderstanding that people think the IMC layer grows the thicker the stronger soldering strength. The IMC layer can be grown and distributed evenly at the interface location will be good enough. Once the IMC layer grows too thick and ove
