This part is a kind of semiconductor called KIA78R05PI.

Function of this product has 4 TERMINAL LOW DROP VOLTAGE REGULATOR.

Manufacturers : KEC

Image and pinout :

Some of the text within the PDF file :

SEMICONDUCTOR TECHNICAL DATA KIA78R05PI~KIA78R15PI BIPOLAR LINEAR INTEGRATED CIRCUIT 4 TERMINAL LOW DROP VOLTAGE REGULATOR The KIA78Rᴧᴧ Series are Low Drop Voltage Regulator suitable for various electronic equipments. It provides constant voltage power source with TO-220 4 terminal lead full molded PKG. The Regulator has multi function such as over current protection, overheat protection and ON/OFF control. FEATURES ᴌ1.0A Output Low Drop Voltage Regulator. ᴌBuilt in ON/OFF Control Terminal. ᴌBuilt in Over Current Protection, Over Heat Protection Function. MAXIMUM RATING (Ta=25ᴱ) ITEM OUTPUT VOLTAGE (Typ.) KIA78R05PI 5 KIA78R06PI 6 KIA78R08PI 8 KIA78R09PI 9 KIA78R10PI 10 KIA78R12PI 12 KIA78R15PI 15 UNIT V JB GF A E LV VL K TU D M P 1234 N C O S H [ ... ]

KIA78R05PI PDF Datasheet Download