FETS for most applications?

Every circuit design needs parts to be chosen for task. However it is also nice to have something in box for use in experiment has born in ones head a minute ago. So lets start collect most widely used parts any starting hobbyist might want to have on hand.

Most common are:
- BS170 small signal, 60V, 500mA
- MPF109 small signal, 20V, 100mA
- BF245 small signal, 30V, 100mA
- IRF350 power, 400V, 15A
- BUZ11 power, 50V, 30

IRLML2502 for <20V applications, and IRLML0030 for <30V applications.
 They can be directly switched from a microcontroller output in many cases.
IRLML2502:
 80mΩ @ 2.5V
 45mΩ @ 4.5V
IRLML0030:
 40mΩ @ 4.5V

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If the device you choose has 0.05ohm Vds(on) and carries 10A then it will dissipate I^2R watts, ie 10x10x0.05 = 5W.  This will need a good heatsink if for more than a second or two, but not at issue if millisecond pulses every few seconds.  These days on resistances of 0.2 to 0.001 ohms are available (though less than 0.005ohms gets expensive).

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