Electronics Forum | Fri Jul 21 01:50:04 EDT 2023 | auriga2001
The purpose is explained in the program 'help' - 'contents' menu. Due to viscosity and adhesion of different fluxes, paste may stick to the stencil more than the board. Using steps allows the surface tension and gravity to pull the paste down; rather
Electronics Forum | Mon Oct 02 12:22:46 EDT 2023 | carl_p
Hi, I use this Material, you can get a few different types to work with certain sensors but I've used them for a solid 12 months now for reflowing. I'm using multiple board materials down to 0.4mm & I've had zero issues. https://www.datumalloys.com
Electronics Forum | Wed Oct 11 18:12:55 EDT 2023 | alexv
I don't think it's a stencil issue. You have an identical inductor next to t=it, that's perfectly straight. You have a problem in that location. I've seen some inductors be affected by slight magnetic forces in the reflow oven. Try to rotate the boar
Electronics Forum | Wed Nov 08 10:48:34 EST 2023 | processman
Hi Was wondering what the general take is with reflow profiles to take into account differing solder paste alloy compared to the solder alloy used for the bumps of a bga device. For instance, SAC305 solder paste and BGA device with SAC105 (higher m
Electronics Forum | Mon Nov 13 18:36:32 EST 2023 | emeto
Your reflow profile should be designed towards the flux in your solder paste. To form a proper inter-metallic layer, you need to reach 20-30C above your melting point and stay in liquidus state for certain amount of time. SAC 105 has 3C difference fr
Electronics Forum | Thu Nov 30 10:05:02 EST 2023 | jineshjpr
All depends on how accuracy you require -- Incase if the PCB layers are same along with same solder paste uses -- pls segregate as batch in terms of similar pcb dimension ( within 30cm variation) attach thermo couples to maximum area -- May be you ne
Electronics Forum | Mon Dec 11 14:30:46 EST 2023 | proy
We all know that purity of nitrogen is critical for selective soldering. When it comes to wave solder- how much or what percentage reduction in oxygen is enough to make a difference in 1) at least reducing dross buildup and 2) being anble to cut ba
Electronics Forum | Wed Dec 13 04:22:58 EST 2023 | ttheis
We print 1/2" x 1" labels via desktop thermal printer for many different applications both product and internal. Fairly easy to whip up a C# or similar program to print what you need on the labels. We wrote a program that has some predefined text for
Electronics Forum | Tue Mar 19 11:38:55 EDT 2024 | jergod
Thats true. But of course there is still differences between machines even all top brands are capable of doing inspection. We are looking best machines for use and price is not critical. Seems like in general Koh Young is leader, but as we have Yamah
Electronics Forum | Tue Mar 19 13:25:53 EDT 2024 | jdengler
This was 10 years ago so the results are not valid for todays equipment. I will say that we were surprised at the range of results. We also did not limit it to 3 vendors but did 5. Our priorities were likely different than yours also. In order of
