The 2SK2881D from Isahaya Electronics is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 2.5 to 6.0 mA, Gate Source Voltage -50 V, Forward Transfer Admittance 8 mS, Continous Drain Current 20 mA, Drain Source Resistance 70 Ohm. Tags: Through Hole. More details for 2SK2881D can be seen below.