The 2N4117A-E3 is an NPN bifet transistor made by Vishay. It is designed for switching and small-signal amplification applications. It has a nominal collector-emitter voltage of 80V and a collector-base voltage of 100V. The maximum collector current is 200mA and the maximum power dissipation is 500mW. It has an hFE of 60-200 and a transition frequency of 1MHz. It has two screw terminals for attaching wires and comes in a 4-pin TO-92 package.