ROHM DTC124EUAT106 NPN Transistor, 100 mA, 3-Pin SOT-323

These are the standard products of "digital transistors".

Standard digital transistor
Built-In Biasing Resistors
Small Surface Mount Package
Pb Free
Applications:
Portable Data Terminal
Coin Processing Machines
Digital Multimeter: Handy Type
Motor Control: Brushless DC
PLC (Programmable Logic Controller)
AC Servo
Network Attached Storage
DVR/DVS
Motor Control: Stepper Motor
Motor Control: Brushed DC
POS (Point Of Sales System)
Electric Bike
Smart Meter
Embedded PC
X-ray Inspection Machine for Security
Surveillance Camera
Intercom / Baby Monitor
Surveillance Camera for Network
Machine Vision Camera for Industrial
Fingerprint Authentication Device
GFCI(Ground Fault Circuit Interrupter)
Display for EMS
Digital Multimeter: Bench Type
Solar Power Inverters