The HQN2498QF from Cystech Electronics is a Bipolar Junction Transistor with Emitter Base Voltage 7 V, Base Emitter Saturation Voltage 3.7 V, Emitter Cut off Current 100 nA, Collector Base Voltage 400 V, Collector Cut off Current 100 nA. Tags: Surface Mount, NPN Transistor. More details for HQN2498QF can be seen below.