Transistor Replacement 2 – Pack ZTX450-ND

PNP 200 mA transistor. As used in the MSStim V2.2 and later.

Transistor replacement 2 - pack ZTX553-ND MSx30 Q22, Q23

2 pack of TIP125TU-ND transistorsMSx30 Q9 and Q12These are part of the flyback circuit on the V3.0 and V3.57 boards. The V2.2 flyback board also uses these, and it replaces the TIP125 high side driver on the DIYPNP V1.5 board as well.

9 pack of 2N3904FS-ND transistorsMSx30 Q6, Q7, Q8, Q10, Q13, Q14, Q15, Q19, Q20These transistors are used as general purpose switching transistors at many points in the V3.0 board.

Package of 2 TIP42COS-ND transistors.These go in the Q3 and Q11 slots on the V3.0 board and are part of the active flyback circuit.

5 pack of PN2222AD26ZCT-ND NPN transistors. Replacement for V2.2 Q3, Q5, Q9-Q11