This part is a kind of semiconductor called 1.5KE200CA.

Function of this product has (1.5KE Series) 1500 Watt Transient Voltage Suppressors.

Manufacturers : Fairchild Semiconductor

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Some of the text within the PDF file :

1.5KE6.8(C)A - 1.5KE440(C)A Discrete POWER & Signal Technologies 1.5KE6.8(C)A - 1.5KE440(C)A Features • • • • • Glass passivated junction. 1500W Peak Pulse Power capability at 1.0 ms. Excellent clamping capability. Low incremental surge resistance. Fast response time; typically less than 1.0 ps from 0 volts to BV for unidirectional and 5.0 ns for bidirectional. Typical IR less than 1.0 µA above 10V. 1.0 min (25.4) Dimensions in inches (mm) 0.375 (9.525) 0.265 (6.731) DO-201AE COLOR BAND DENOTES CATHODE 0.210 (5.334) 0.188 (4.775) 0.042 (1.067) 0.037 (0.940) • DEVICES FOR BIPOLAR APPLICATIONS - Bidirectional types use CA suffix. - Electrical Characteristics apply in both directions. 1500 Watt Transient Voltage Suppressors Absolute Maximum Ratings* Symbol PPPM IPPM PD if [ ... ]

1.5KE200CA PDF Datasheet Download