View dtc143ze datasheet:

Transistors Digital transistors (built-in resistors) DTC143ZE / DTC143ZUA / DTC143ZKA DTC143ZCA / DTC143ZSA 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 (Built-in resistor type) FEquivalent circuit (96-334-C143Z) 429 DTC143ZE/DTC143ZUA/DTC143ZKA/ Transistors Transistors DTC143ZCA /DTC143ZSA FAbsolute