This part is a kind of semiconductor called 3.0SMCJ36A.

Function of this product has Surface Mount Transient Voltage Suppressor.

Manufacturers : Taiwan Semiconductor

Image and pinout :

Some of the text within the PDF file :

3.0SMCJ SERIES Surface Mount Transient Voltage Suppressor Features For surface mounted application Low profile package Built-in strain relief Glass passivated junction Excellent clamping capability Fast response time: Typically less than 1.0ps from 0 volt to BV min. Typical IR less than 1μA above 10V High temperature soldering guaranteed: 260OC / 10 seconds at terminals Plastic material used carries Underwriters Laboratory Flammability Classification 94V-0 3000 watts peak pulse power capability with a 10 X 1000 us waveform by 0.01% duty cycle Voltage Range 5.0 to 170 Volts 3000 Watts Peak Power SMC/DO-214AB .129(3.27) .118(3.0) .245(6.22) .220(5.59) .103(2.62) .079(2.00) .280(7.11) .260(6.60) .012(.31) .006(.15) Mechanical Data Case: Molded plastic Terminals: Solder plated Polari [ ... ]

3.0SMCJ36A PDF Datasheet Download