The MMBT2222A from Diotec Semiconductor is a Bipolar Junction Transistor with Collector Emitter Voltage 40 V, Continuous Collector Current 600 mA, DC Current Gain 375, Power Dissipation 0.25 W, Operating Temperature -55 to 150 Degree C. Tags: Surface Mount, NPN Transistor. More details for MMBT2222A can be seen below.