This part is a kind of semiconductor called BCR12LM-14LB.

Function of this product has Triac.

Manufacturers : Renesas Technology

Image and pinout :

Some of the text within the PDF file :

Preliminary Datasheet BCR12LM-14LB Triac Medium Power Use Features     IT (RMS) : 12 A VDRM : 800 V (Tj = 125C) IFGTI, IRGTI, IRGTIII : 30 mA Viso : 1800 V  The Product guaranteed maximum junction temperature 150C  Insulated Type  Planar Type  UL Recognized: File No. E223904 R07DS0059EJ0100 Rev.1.00 Jul 27, 2010 Outline RENESAS Package code: PRSS0003AF-A) (Package name: TO-220FL) 2 1. T1 Terminal 2. T2 Terminal 3. Gate Terminal 3 1 1 2 3 Applications Washing machine, inversion operation of capacitor motor, and other general controlling devices Maximum Ratings Parameter Repetitive peak off-state voltageNote1 Non-repetitive peak off-state voltageNote1 Symbol VDRM VDSM Voltage class 14 800 700 840 Unit V V V Conditions Tj = 125C Tj = 150C R07DS0059EJ0 [ ... ]

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