This part is a kind of semiconductor called MUR20200.

Function of this product has (MUR20100 / MUR20120) Ultra Fast Recovery Diodes.

Manufacturers : Sirectifier Semiconductors

Image and pinout :

Some of the text within the PDF file :

MUR20100, MUR20120 Ultra Fast Recovery Diodes Dimensions TO-220AC A C(TAB) A C C Dim. A B C D E F G H J K L M N Q A=Anode, C=Cathode, TAB=Cathode VRSM V 1000 1200 VRRM V 1000 1200 MUR20100 MUR20120 Inches Min. Max. 0.500 0.580 0.560 0.650 0.380 0.420 0.139 0.161 2.300 0.420 0.100 0.135 0.045 0.070 0.250 0.025 0.035 0.190 0.210 0.140 0.190 0.015 0.022 0.080 0.115 0.025 0.055 Milimeter Min. Max. 12.70 14.73 14.23 16.51 9.66 10.66 3.54 4.08 5.85 6.85 2.54 3.42 1.15 1.77 6.35 0.64 0.89 4.83 5.33 3.56 4.82 0.38 0.56 2.04 2.49 0.64 1.39 Symbol IFRMS IFAVM IFRM Test Conditions TVJ=TVJM TC=85oC; rectangular, d=0.5 tp<10us; rep. rating, pulse width limited by TVJM TVJ=45oC t=10ms (50Hz), sine t=8.3ms (60Hz), sine t=10ms(50Hz), sine t=8.3ms(60Hz), sine t=10ms (50Hz), sine [ ... ]

MUR20200 PDF Datasheet Download