Nexperia
Nexperia PDTC123YT,215 NPN Digital Transistor, 50 V, 3-Pin SOT-23, Mounting Type: Surface Mount, Maximum Power Dissipation: 250 mW, Transistor Configuration: Single, Maximum Emitter Base Voltage: 5 V, Dimensions: 3 x 1.4 x 1.1mm, Minimum Operating Temperature: -65 °C, Maximum Collector Emitter Saturation Voltage: 0.15 V, Typical Resistor Ratio: 0.22