In short: to make this component from LCSC I have two options:
1: make a bastard symbol like they did, stack multiple pins on each other for D and S
2: make a footprint with multiple pads with each padnumber.
What is the correct/best way to do it?
do it like JLC did it. But hide the pin numbers and only show D, S and G. That makes it clean and it works as intended
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Both methods are commonly used in KiCad.
A third method that some people prefer is to use symbols which have all the pins listed:
Library Link: PCM_Transistor_MOSFET_AKL:Q_NMOS-E_Generic_SSSGDDDD
The second method, of just using three unique pad numbers in the footprint is the simplest, but it has issues with flying probe testing. Listing all pads in the schematic is very verbose. In general I do not like hiding pins in the schematic, but I think that the first method of stacking the pins, and making the duplicates invisible, or hiding their pin numbers is probably the best compromise.
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Thank you, also very useful to know not to confuse flying probe.
Also on that type of package, you want all the pins connected, not just one each from source and drain. The copper to each pin is an important part of both current rating and heat dissipation.
of course, just had to ask about the best way of achieving that 