This part is a kind of semiconductor called TA7812F.

Function of this product has (TA78xxF) Three Terminal Positive Voltage Regulators.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

TA7805,057,06,07,08,09,10,12,15,18,20,24F TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA7805F,TA78057F,TA7806F,TA7807F,TA7808F,TA7809F, TA7810F,TA7812F,TA7815F,TA7818F,TA7820F,TA7824F Three Terminal Positive Voltage Regulators 5 V, 5.7 V, 6 V, 7 V, 8 V, 9 V, 10 V, 12 V, 15 V, 18 V, 20 V, 24 V Features l Suitable for CMOS, TTL, the other digital IC's power supply. l Internal thermal overload protection. l Internal short circuit current limiting. l Maximum output current of 1 A. l Packaged in POWER MOLD. Pin Assignment Marking side 1 3 2 IN COMMON OUT (CASE) Weight HSIP3-P-2.30B: 0.36 g (Typ.) HSOP3-P-2.30A: 0.36 g (Typ.) 1 2001-06-08 TA7805,057,06,07,08,09,10,12,15,18,20,24F Equivalent Circuit Maximum Ratings (Ta = 25°C) Characteristics TA7805F TA78057F TA7806F T [ ... ]

TA7812F PDF Datasheet Download