all home built solar system

Author	Message
Haxby Guru Joined: 07/07/2008 Location: Australia Posts: 423	Posted: 11:53pm 16 Apr 2021         poida said   the FET spacing is 24.5mm. This is to allow those of us who have used Madness's boards to reuse the heat sinks. Ok never mind the MOSFET spacing. Heatsink mounting holes in the PCB are always a good idea though especially if you are still in the first version of the board. If you put some conveniently spaced 3.3mm holes 10mm north of the centre of the MOSFET pads then other builders will be able to have a choice of heatsink mounting options. If you choose the 10mm dimension then it will suit a popular heatsink profile that many Chinese inverters use.