This part is a kind of semiconductor called B41303.

Function of this product has Snap-In Capacitors.

Manufacturers : EPCOS

Image and pinout :

Some of the text within the PDF file :

Snap-In Capacitors Standard – 85 °C B41303, B43303 General-purpose grade capacitors Applications I Switch-mode power supplies in industrial and B41303 B43303 entertainment electronics Features I High ripple current capability I Different case sizes available for each capacitance value Construction I I I I I I Charge-discharge proof, polar Aluminum case, fully insulated Snap-in solder pins to hold component in place on PC-board Minus pole marking on case surface Minus pole not insulated from case Overload protection (safety vent) Terminals I Standard version with 2 terminals 2 lengths available: 6,3 and 4,5 mm I 3 terminals: length 4,5 mm (terminal arrangement ensures correct insertion) 210 10/02 B41303 / B43303 Standard – 85 °C Specifications and charact [ ... ]

B41303 PDF Datasheet Download