Electronics Forum | Fri Oct 17 16:55:30 EDT 2003 | russ
Okay, I'm here in Colorado and I used indium 92J and loved it. My test dept. hated it! It leaves a pretty large amount of residue that apparently increased the pin maintenance. The company I worked for actually switched from this paste to another b
Electronics Forum | Mon Sep 27 06:43:59 EDT 2021 | sophyluo1985
Some thoughts of GOLDLAND: We recommend that you choose Vitronics or Heller brands. They are the most popular machines in the world. According to the long-term plan, your equipment needs maintenance and replacement parts in the future, so their parts
Electronics Forum | Tue Aug 11 17:36:44 EDT 2009 | dyoungquist
You are looking for a complete SMT assembly line plus possible X-Ray inspection and rework equipment. The 3 components of the SMT line are stencil printer, pick-n-place machine and reflow oven. How small are your components? 0603? 0402? What is the
Electronics Forum | Fri Aug 04 13:47:20 EDT 2006 | pemea1
apples to apples. 20 boards 80 parts top and 10 parts bottom. these boards are done on a semi regular basis (you know the boards are coming to you from an OEM at least three times a month, just no exact schedule). All that is required is pasting..mo
Electronics Forum | Tue Jun 11 11:25:57 EDT 2019 | don_julio
> If the board is just not reaching the temps you > need, you could place them in an oven to > "preheat" them. When I was building a > rather thick board with a copper core I had to do > this. Since we were only doing sma
Electronics Forum | Mon Mar 20 22:08:24 EDT 2023 | tey422
For reflow oven to "auto off" it has to go through the cool down; it should be off went the cool off temperature is reached. Perhaps you need to 1st check if something prevent the oven reach the cool off temp (both hardware & software).
Electronics Forum | Thu Mar 25 23:23:00 EDT 2021 | llawrence
The QFP pitch is 0.5mm. Pad size is 1.475 x 0.3mm, and the new aperture size is 1.32 x 0.22mm. I'm not sure about whether or not it is lasered, but on the newly ordered stencil I selected the polishing option. Looks like the pad width is already 2/3
Electronics Forum | Thu Jun 13 09:39:43 EDT 2019 | don_julio
Problem is I don't have a mesh belt (lesson learned). Our conveyor is pins. If I laid some scrap pcb's spanning the conveyor pins on the long dimension of the board, I'm confident it would sag. We get a bit of sag today in our 1.6mm thick boards whi
Electronics Forum | Fri Sep 24 15:04:29 EDT 2021 | dwl
A few random thoughts: Nitrogen in reflow is mostly cosmetic, to get shiny joints on lead free. If you are getting good results without nitrogen now, there's no need to add it on your new line. Since power consumption is important, I would get spec
Electronics Forum | Fri Mar 14 14:46:25 EDT 2008 | hussman
If it works on paper, it has to work in the real world.
