This part is a kind of semiconductor called A2030.

Function of this product has 2SA2030.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

2SA2030 / 2SA2018 / 2SA2119K PNP -500mA -12V Low Frequency Amplifier Transistors lOutline Parameter Value VMT3 Collector Base Emitter Base Emitter EMT3 Collector Datasheet VCEO IC -12V -500mA lFeatures 1) A Collecotr current is large.General Purpose. 2) Collector saturation voltage is low. VCE(sat)  250mV At IC= -200mA, IB= -10mA 3) Complementary NPN Types : 2SC5663 (VMT3) / 2SC5585 (EMT3) 4) Lead Free/RoHS Compliant. 2SA2030 (SC-105AA) SMT3 Collector Base Emitter 2SA2018 SOT-416 (SC-75A) 2SA2119K SOT-346 (SC-59) lInner circuit Collector lApplications Base Switching circuit, Muting circuit Emitter lPackaging specifications Part No. 2SA2030 2SA2018 2SA2119K Package VMT3 EMT3 SMT3 Package size (mm) 1212 1616 2928 Taping code T2L TL T146 Basic Reel size Tape width ordering (mm) [ ... ]

A2030 PDF Datasheet Download