This part is a kind of semiconductor called BCR30AM.
Function of this product has Triac 30 Ampere/400-600 Volts.
Manufacturers : Powerex Power Semiconductors
Image and pinout :

Some of the text within the PDF file :
BCR30AM Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (412) 925-7272 Triac 30 Ampere/400-600 Volts OUTLINE DRAWING C D лG E H J K L M A Description: A triac is a solid state silicon AC switch which may be gate triggered from an off-state to an on-state for either polarity of applied voltage. Features: □ Planar Passivation F B P K N Q R □ Selected for Inductive Loads Applications: □ Contactless AC Switches CONNECTION DIAGRAM □ Microwave Ovens □ Motor Controls □ Lighting Controls Ordering Information: Example: Select the complete eight, nine or ten digit part number you desire from the table - i.e. BCR30AM-8 is a 400 Volt, 30 Ampere Triac. Type VDRM Volts 400 600 Code -8 -12 Inductive Load* L T1 TERMINAL T2 TERM [ ... ]
BCR30AM PDF Datasheet Download
