The PAM8403 is an Amplifier Board that can be powered using simple 5V input and could drive two 3W + 3W stereo speakers. It is an excellent choice for, who wants a Class-D stereo audio amplifier in a small board space.
The 2SK1507, 2SK-1507, K1507, 1507 is a 600V 9A 50W High speed switching MOSFET, Low on-resistance No secondary breakdown Low driving power High voltage VGSS = ±30V Guarantee Avalanche-proof Applications.
The 2SA-1266, 2SA1266-Y is 50V 150mA 400mW PNP Bipolar Transistor, manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor.
The PCA9685 is a 16-channel I2C-bus controlled LED controller optimized for Red/Green/Blue/Amber (RGBA) color backlight. Each LED output has individual 12-bit resolution (4096 steps) PWM controller with a fixed frequency.