The MMDT3904-EVL from Venkel is a Bipolar Junction Transistor with Collector Cut off Current 50 nA, Collector Emitter Breakdown Voltage 40 V, Continuous Collector Current 200 mA, DC Current Gain 100, Power Dissipation 225 mW. Tags: Surface Mount, NPN Transistor. More details for MMDT3904-EVL can be seen below.