Transistor Replacement 2 – Pack ZTX450-ND

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

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

9 pack of 2N3904FS-ND transistors MSx30 Q6, Q7, Q8, Q10, Q13, Q14, Q15, Q19, Q20 These transistors are used as general purpose switching transistors at many points in the V3.0 board.

Set of 2 IRFIZ34G-ND FET transistors. Q1 and Q5 in the V3.0 kits. Q2 and Q7 in the V2.2 kits.

2 pack of TIP125TU-ND transistors MSx30 Q9 and Q12 These 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.