PDTC124X series - NPN resistor-equipped transistors; R1 = 22 kOhm, R2 = 47 kOhm TO-236 3-Pin
NPN Transistor TO-236AB 50V 100mA 250mW Surface Mount
PDTC124T series - NPN resistor-equipped transistors; R1 = 22 kOhm, R2 = open TO-236 3-Pin
Trans Digital BJT NPN 50V 100mA 250mW Automotive 3-Pin SOT-23 T/R
PDTA124X series - PNP resistor-equipped transistors; R1 = 22 kOhm, R2 = 47 kOhm TO-236 3-Pin
PDTC124E series - NPN resistor-equipped transistors; R1 = 22 kΩ, R2 = 22 kΩ TO-236 3-Pin