View dtc115te datasheet:

DTC115TH / DTC115TUA / DTC115TKA / DTC115TSA Transistors Digital transistors (built in resistor) DTC115TH / DTC115TUA / DT115TKA / DTC115TSA External dimensions (Units : mm) Features 1) Built-in bias resistors enable the configuration of an DTC115TH 1.6 inverter circuit without connecting external input 0.85 (1) resistors. (2) (3) 2) The bias resistors consist of thin-film resistors with complete isolation to allow negative biasing of the (1) Emitter ROHM : EMT3H input, and parasitic effects are almost completely (2) Base EIAJ : SC-89 (3) Collector eliminated. 3) Only the on / off conditions need to be set for DTC115TUA operation, making device design easy. 4) Higher mounting densities can be achieved. 1.25 2.1 Equivalent circuit C 0.1to0.4 B R1 E