16 Hertz Transistor Kit - 15 Variations, 600 Transistors 15 Variations of Transistors 40 each for a total of 600 Transistors Transistors: 2N2222, 2N3904, 2N3906, 2N5401, 2N5551, A1015, C1815, C945, S8050, S8550, S9012, S9013, S9014, S9015, S9018