The MasterGaN2 from STMicroelectronics has been designed with two asymmetric gallium-nitride(GaN) transistors for delivering an integrated GaN solution suited to soft-switching and active-rectification
2SC828 is an NPN, Silicon-based AF Amplifier Transistor that is mainly used in AF based audio equipment for amplification and switching. It has a Collector-Emitter Voltage of 45 Vdc with a Collector-Base voltage of 45 Vdc.
2N5457 is an N-Channel Depletion layer Junction Field Effect Transistor. This JFET is an N- Channel - Depletion layer JFET that is widely used in audio equipment for amplification, tone modulation, and other purposes.