BC556B PNP Epitaxial Silicon Switching and Amplifier High Voltage Transistor TO-92 Package CBE. This transistor is found on the Hantarex Polo arcade monitor chassis at location T107, T108, T109, T110, T111, T112, T113, T114, T115, T116 and T117 and any other locations that require this transistor. The BC556B is higher rated and can replace all of the following transistors BC556A, BC556C, BC557, BC557A, BC557B, BC557C, BC558, BC558A, BC558B, BC558C, BC559, BC559A, BC559B, BC559C, BC560, BC560A, BC560B, BC560C. These are used on many other models of monitors and other applications. For every quantity of 1 added to your cart you will receive 3 transistors.