This part is a kind of semiconductor called BAV23C.

Function of this product has SWITCHING DIODE.

Manufacturers : JCET

Image and pinout :

Some of the text within the PDF file :

JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD SOT-23 Plastic-Encapsulate Diodes BAV23A/C/S SWITCHING DIODE FEATURES z Fast Switching Speed z High Conductance z For General Purpose Switching Applications BAV23A BAV23C BAV23S SOT-23 MARKING: KT7 MARKING: KT6 MARKING:KL31 KT7 KT7 KT6 KT6 KL31 KL31 Solid dot = Green molding compound device, if none, the normal device MAXIMUM RATINGS ( Ta=25℃ unless otherwise noted ) Symbol Parameter VRRM VRWM Peak Repetitive Reverse Voltage Working Peak Reverse Voltage VR(RMS) IO IFSM RMS Reverse Voltage Average Rectified Output Current Non-repetitive Peak Forward Surge Current @ t= 8.3ms PD RΘJA Tj Tstg Power Dissipation Thermal Resistance from Junction to Ambient Junction Temperature Storage Temperature Value 250 175 225 1.7 350 [ ... ]

BAV23C PDF Datasheet Download