The BCW33 from Nexperia is a Bipolar Junction Transistor with Emitter Base Voltage 5 V, Base Emitter Saturation Voltage 750 to 850 mV, Emitter Cut off Current 100 nA, Collector Base Voltage 32 V, Collector Cut off Current 0.1 to 10 uA. Tags: Surface Mount, NPN Transistor. More details for BCW33 can be seen below.