View dtc124exx 25 sot416 323 346 23 datasheet:

Transistors Digital transistors (built-in resistors) DTC124EE / DTC124EUA / DTC124EKA DTC124ECA / DTC124ESA FFeatures FExternal dimensions (Units: mm) 1) Built-in bias resistors enable the configuration of an inverter circuit without connecting external input resistors (see equivalent circuit). 2) The bias resistors consist of thin- film resistors with complete isola- tion to allow negative biasing of the input. They also have the advan- tage of almost completely eliminat- ing parasitic effects. 3) Only the on/off conditions need to be set for operation, making device design easy. FStructure NPN digital transistor (with built-in resistors) FEquivalent circuit (96-323-C124E) 411 Transistors DTC124EE/DTC124EUA/DTC124EKA/DTC124ECA/DTC124ESA FAbsolute maximum ratings