Recently i have been working on a version of the usupply that has an isolated output and a 4 wire kelvin corrected output, and have been running into a small issue on how far components can be spaced while still being easy enough for average Joe to solder without issue
what i have so far is:
1210 size inductors 2mm tall,
0805 size resistors and capacitors, standard height
and a few ssop/ soic packages, so far routed for ssop but likely will try for soic
the spacing i have so far achieved is:
3mm pad to pad on all 0805 components,
4mm perpendicular to pins on ssop's and 3mm in line,
3.5mm perpendicular to 1210 pads and 8mm in line,
these are the clearances from the edge of the pad to the nearest object
and while i am at it, what spacing is recommended between test point groups of different voltages, the 4 at the lower left have around 1V and a short between these shall not harm the circuit while the next one across has 30V+ shall, the earth will be spaced similarly to the higher voltage one,
so far the low voltage are 1.5mm apart, with the 30V+ one separated by 3mm
For reference here is a segment of my circuit that i am most concerned about,