This part is a kind of semiconductor called BT134-600.

Function of this product has 4Q Triac.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

TO-220AB BT134-600 4Q Triac 21 November 2013 Product data sheet 1. General description Planar passivated four quadrant triac in a SOT82 plastic package intended for use in general purpose bidirectional switching and phase control applications. 2. Features and benefits • Compact package • High blocking voltage capability • Less sensitive gate for improved noise immunity • Planar passivated for voltage ruggedness and reliability • Triggering in all four quadrants 3. Applications • General purpose low power motor control • Home appliances • Industrial process control 4. Quick reference data Table 1. Quick reference data Symbol Parameter Conditions VDRM repetitive peak offstate voltage ITSM non-repetitive peak on- full sine wave; Tj(init) = 25 °C; state current [ ... ]

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