The BSS123BKS3-0-T1-G from Cystech Electronics is a MOSFET with Continous Drain Current 0.2 to 0.16 A, Drain Source Resistance 4 to 7 Ohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for BSS123BKS3-0-T1-G can be seen below.