This part is a kind of semiconductor called SD965.

Function of this product has Bipolar Junction Transistor.

Manufacturers : Sinyork

Image and pinout :

Some of the text within the PDF file :

Mini size of Discrete semiconductor elements Diode Rectifier Schottky SOD-723 / SOD-523 / SOD-323 TO-252 / TO263 SOT-23-6 / TSSOP-8 / SOP-8 mini-MELF / MELF SMA / SMB / SMC Switching SOT-523 / SOT-323 / SOT-23 Bridge (Single phase / Three phase) RF ( low capacitance ) & Varactor SOT-323 SOT-23 TO-252 / TO-263 / TO-220 / TO-3P TSSOP-8 / SOP-8 Switching Regulator / Charger pump DC-DC converter / PWM IC Step-up/down (Boost / Buck) LDO Regulator Ultra LDO Regulator SOT-323 / SOT-363 (Dual N , Dual P , P+N) SOT-23 / SOT-89 TO-252 / TO-263 TO-92 / TO-220 / TO-3P Triac / SCR / RF (1GHz ~ ) Digital - P1 - MOSFET P2 P3 P4 P5 P6 P7 P8 P9~ P11 P12 P13 P14 P15 P16~ P18 Regulator Transistor (Digital) [ ... ]

SD965 PDF Datasheet Download