The J210 from New Jersey Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 2 to 15 mA, Gate Source Voltage -25 V, Forward Transfer Admittance 4000 to 12000 mS, Gate Current 10 mA, Gate Reverse Current -100 pA. Tags: Through Hole. More details for J210 can be seen below.