This part is a kind of semiconductor called 16S.

Function of this product has PHASE CONTROL SCR.

Manufacturers : International Rectifier

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Some of the text within the PDF file :

Previous Datasheet Index Next Data Sheet Bulletin I2115 16TTS.. SERIES PHASE CONTROL SCR VT Description/Features The 16TTS.. new series of silicon controlled rectifiers are specifically designed for medium power switching and phase control applications. The glass passivation technology used has reliable operation up to 125° C junction temperature. Typical applications are in input rectification (soft start) and these products are designed to be used with International Rectifier input diodes, switches and output rectifiers which are available in identical package outlines. <1.4V @ 10A = 200A ITSM VR/ VD = 1200V Output Current in Typical Applications Applications Capacitive input filter TA = 55°C,TJ = 125°C, common heatsink of 1°C/W Single-phase Bridge 13.5 Three-phase Bridge Un [ ... ]

16S PDF Datasheet Download