This part is a kind of semiconductor called DMV1500M.

Function of this product has DAMPER + MODULATION DIODE FOR VIDEO.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

® DMV1500M DAMPER + MODULATION DIODE FOR VIDEO DAMPER MODULATION MAIN PRODUCT CHARACTERISTICS MODUL IF(AV) VRRM trr (max) VF (max) 3A 600 V 50 ns 1.4 V DAMPER 6A 1500 V 135 ns 1.65 V 1 2 3 1 2 3 FEATURES AND BENEFITS s s s s s Insulated TO-220AB (Bending option F5 available) s s s Full kit in one package High breakdown voltage capability Very fast recovery diode Specified turn on switching characteristics Low static and peak forward voltage drop for low dissipation Insulated version: Insulated voltage = 2500 VRMS Capacitance = 7 pF Planar technology allowing high quality and best electrical characteristics Outstanding performance of well proven DTV as damper and new faster Turbo 2 600V technology as modulation DESCRIPTION High voltage semiconductor especially designed for ho [ ... ]

DMV1500M PDF Datasheet Download