transistors

Common Transistors

Bipolar transistors

2N3055: old fashioned, high power switching transistor. These days it almost never makes sense to use a 2N3055 when a MOSFET or IGBT could be used instead.

MOSFET: BS170 and 2N7000

The BS170 is nearly identical to the 2N7000, but handles over twice the power.

max voltage

60 V

max current

200 mA (2N7000) or 500 mA (BS170)

max power

400 mW (2N7000) or 883 mW (BS170)

on resistance

5 Ω at 10 V Vgs

off leakage current

10 nA (10e-9 A, or 0.00000001 Amps)

MOSFET IRF510

This is a very popular high power MOSET.

max voltage

100 V

max current

5.6 A, but at 100 ℃: 4 A

on resistance

0.54 Ω at 10 V Vgs

MOSFET BUK95/9629-100B

This is a pretty awesome MOSFET. N-channel enhancement mode field-effect power transistor

max voltage

100 V

max current

46 A

on resistance

24 mΩ

Vthreshold

2 V

ideal for 12 V, 24 V and 42 V loads

Diodes

1N4148 and 1N4001, 1N4002, etc.

BY229 (fast switching diode suitable for freewheeling diode)

Optoisolators

PC817