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Back77 Refs 3 pin Molex connector 2.54 mm spacing Q1, Q2, Q3, Q4, Q5 R1, R2, R23, R24 R3, R21, R27, R28 | 3 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 KK254 Molex header 2.54 mm spacing Pin header 2.54 mm spacing"/>