The CA3130A and CA3130E are op amps that combine the advantage of both CMOS and bipolar transistors. Those are used in the input circuit to provide very-high-input impedance, very-low-input current, and exceptional speed performance.
The 2SD400 2SD-400 D400 D-400 is a NPN Transistor 25V 1A 0.9W Triode Transistor TO-92L Package Silicon NPN Low Frequency Power Transistor. NPN Epitaxial Planar Silicon Transistor Absolute Maximum Ratings at Ta = 25’C.
The AOZ1046AI is a high efficiency simple to use and work from a 4.75V to 16V input voltage range, and provides up to 2A of continuous output current with an output voltage adjustable down to 0.8V. The AOZ1046 comes in an SOP-8 package.