This part is a kind of semiconductor called 79M12A.

Function of this product has IP79M12A.

Manufacturers : Seme LAB

Image and pinout :

Some of the text within the PDF file :

IP120MA SERIES IP120M SERIES IP79M00A SERIES IP79M00 SERIES 0.5 AMP NEGATIVE VOLTAGE REGULATOR !  2 1 3 FEATURES Pin 1 – Ground Pin 2 – VOUT Case – VIN Pin 1 – Ground Pin 2 – VIN Case – VOUT • OUTPUT CURRENT UP TO 0.5A • OUTPUT VOLTAGES OF -5, -12, -15V • 0.01% / V LINE REGULATION • 0.3% / A LOAD REGULATION • THERMAL OVERLOAD PROTECTION • SHORT CIRCUIT PROTECTION • OUTPUT TRANSISTOR SOA PROTECTION • 1% VOLTAGE TOLERANCE (–A VERSIONS) DESCRIPTION The IP120MA and IP79M00A series of voltage regulators are fixed output regulators intended for local, on-card voltage regulation. These devices are available in -5, -12, and -15 volt options and are capable of delivering in excess of 500mA over temperature. The A suffix devices are fully specified at 0.5A, provid [ ... ]

79M12A PDF Datasheet Download