2N3904 NPN VCBO 60V IC 0.2Amp General-Purpose Amplifier and Switching Transistor TO-92 Package with molded leads, lead layout of EBC. Wells Gardner K4600 at TR207, TR208, TR209 and Wells Gardner K7000 at Q1, Q2, Q3 and Q9 and many other monitors and locations. The 2N3904 are higher rated and can replace the 2N4123, 2N4401, MPS-A20 and FMPS-A20. These are used on many monitor and other applications. For every quantity of 1 added to your cart you will receive 5 transistors.