The 2N5912 from New Jersey Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 7 to 40 mA, Gate Source Voltage -0.3 to -4 V, Forward Transfer Admittance 5 to 10 mS, Gate Current 50 mA, Gate Reverse Current -2 to -250 nA. Tags: Through Hole. More details for 2N5912 can be seen below.