All Questions
5
questions
4
votes
1
answer
284
views
SMT Reflow solder quality issue with SN42/BI58 paste
I have been doing hardware design and PCBA prototyping for a while and I have issues with quality of reflow soldering. I have a small lab including a pick'n'place machine, stencil printer (eC-stencil-...
- 453
1
vote
0
answers
189
views
Do I need to alter my reflow profile for a PCB with thicker copper?
I have always been working with pretty standard 1 oz. copper PCBs and using a Controleo3 reflow oven with great success. However I am now working on boards that will potentially have 3oz or 4oz copper ...
- 1,197
1
vote
0
answers
53
views
Can I expect a solderpaste circle to reliably reflow onto a smaller circlular pad?
For various reasons, I need to pad a bit more solder paste onto a fixed-size pad, and I cannot change the stencil thickness without messing up other footprints.
The pad is a 1.2mm diameter circle, and ...
- 327
8
votes
1
answer
2k
views
Solder paste stencil application
I am trying to do reflow soldering with a stencil for the first time. I have done some reflow soldering before, but every time I manually applied the paste using a small syringe + needle. These ...
- 135
12
votes
3
answers
6k
views
Soldering heatsink pad on bottom of IC
I am attempting to make a board for the tlc5951 24-channel led driver to drive an 8x8 rgb led array. I have made what I think is a good eagle library for the sop-38 package, but I am not sure what to ...
- 2,054