This part is a kind of semiconductor called TC1100H.

Function of this product has (TC1100H - TC1800H) SURFACE MOUNT THYRISTOR SURGE PROTECTIVE DEVICE.

Manufacturers : Lite-On

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Some of the text within the PDF file :

LITE-ON SEMICONDUCTOR TC0640H thru TC3500H Bi-Directional VDRM IPP - 58 to 320 Volts - 100 Amperes SURFACE MOUNT THYRISTOR SURGE PROTECTIVE DEVICE FEATURES Oxide Glass Passivated Junction Bidirectional protection in a single device Surge capabilities up to 100A @ 10/1000us or 400 @ 8/20us High off state Impedance and low on state voltage Plastic material has UL flammability classification 94V-0 SMC SMC A DIM. A B C B C D E MIN. 6.60 5.59 2.92 0.15 7.75 0.05 2.01 0.76 MAX. 7.11 6.22 3.18 0.31 8.13 0.20 2.62 1.52 MECHANICAL DATA Case : Molded plastic Polarity : Denotes none cathode band Weight : 0.093 grams G H E F D F G H All Dimensions in millimeter MAXIMUM RATINGS CHARACTERISTICS Non-repetitive peak impulse current @ 10/1000us Non-repetitive peak On-state current @ 8.3ms (one half [ ... ]

TC1100H PDF Datasheet Download