Murphy's friend Guru Joined: 04/10/2019 Location: AustraliaPosts: 674
Posted: 10:04am 20 Apr 2021
And another tip for PCB layout for the home designer. Try to make the component pads as big as possible, I find those in the PCB program libraries useless for home soldering - unnecessarily small. Make the pads for connectors rectangular (with rounded corners perhaps), you get maximum surface are which will be appreciated if that part ever has to be unsoldered. Ditto for IC sockets. I usually make component pads (resistors, etc,) square for the same maximum surface reason. Double check all component pin diameters so they fit easily through the pad hole but also are not too loose so the component falls out when you turn the board over to solder the legs.
The manufacturer will make track corners anyway you like, I see nothing wrong with 90 degrees. But the track separation in the above PCB is unnecessarily close, IMO, at some parallel tracks.