NEC

2SC2682 Transistor
Audio frequency power amplifier;

2SC2690 Transistor NPN
Use in audio and radio Frequency power amplifiers.
2SC2690 = 2SC2824

2SC4550 Transistor
FOR HIGH-SPEED SWITCHING

2SC945 Transistor
SI-N Uni 60V 0,1A 0,25W 250MHz
Equivalent 2SC945P

2SK1492 MOSFET
Features

Low on-state resistance RDS(on) = 0.1 Ω MAX. (VGS = 10 V, ID = 18 A)

Low input capacitance Ciss = 3000 pF TYP.

Built-in G-S gate protection diodes