This part is a kind of semiconductor called STR-A6252M.

Function of this product has Universal-Input 20 W 67 kHz Flyback Switching Regulators.

Manufacturers : Sanken Electric

Image and pinout :

Some of the text within the PDF file :

Sanken Power Devices from Allegro MicroSystems STR-A6252M Universal-Input 20 W 67 kHz Flyback Switching Regulators S Re w it gu chi lat ng ors Package DIP-8 Approximate Scale 1:1 FEATURES AND BENEFITS 67 kHz PWM with ±5% frequency jittering for EMI noise filtering and cost reduction Rugged 650 V avalanche-rated MOSFET: • Simplified surge absorption • No VDSS derating required Low RDS(on) : 2.8 Ω maximum Auto-burst mode for stand-by operation or light loads; less transformer audible noise Built-in leading edge blanking Soft start and low start-up current; start-up circuit disabled in operation Auto-burst stand-by (intermittent operation) input power <0.1 W at no load Built-in constant-voltage/constant current (CV/CC) Multiple protections: • Pulse-by-pulse o [ ... ]

STR-A6252M PDF Datasheet Download