This part is a kind of semiconductor called DTC124ESA.

Function of this product has Digital transistors (built-in resistors).

Manufacturers : Rohm

Image and pinout :

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Transistors Digital transistors (built-in resistors) DTC124EE / DTC124EUA / DTC124EKA DTC124ECA / DTC124ESA FFeatures 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 thinfilm resistors with complete isolation to allow negative biasing of the input. They also have the advantage of almost completely eliminating 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 FExternal dimensions (Units: mm) (96-323-C124E) 411 Transistors DTC124EE/DTC124EUA/DTC124EKA/DTC124ECA/DTC124ESA FAbsolute maximum ratings (Ta = 25_C) FElectrical c [ ... ]

DTC124ESA PDF Datasheet Download