The J271 from New Jersey Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current -6 to -50 mA, Gate Source Voltage 30 V, Forward Transfer Admittance 8 to 18 mS, Gate Current -50 mA, Gate Reverse Current 5 nA. Tags: Through Hole. More details for J271 can be seen below.