Where can I get PCB design standards?

Question

Printed circuit boards

I am designing a printed circuit board (for the first time) and I have a question. Where to take for example the dimensions of the holes for the pads in increments of 2.54. What units to use for design, mil or mm? I want to make sure that on my device a battery charge board is soldered on top of the main board (that is, without wires). And for this, I need to accurately mark all the holes and the absence of a mask on the board. Are there any sensible videos, articles about design standards, it’s trivial in which direction to round the units of measurement for a more accurate device in the future.

Answer 1

The standards describe completely different aspects of design, not at all what you write. But for starters, you can read on the first Google issue: GOST R 55490-2013, GOST R 55693-2013, GOST R 53429-2009
If you don’t know how to draw a component’s footprint, then google the datasheets for the components used. Most normal manufacturers write about it. Here is the datasheet for the PSL-1 comb , for example. It says about diameters. Whatever step you write in CAD, everything will be rounded during production, so you just need to take this into account.
Units of measurement depend on the production facility where the board will be manufactured. If we have, then definitely in the metric system. Usually the manufacturer himself can translate the units of measurement as he sees fit.
Google individual questions, there are articles about almost everything.