This part is a kind of semiconductor called 3N90.

Function of this product has N-CHANNEL POWER MOSFET.

Manufacturers : Unisonic Technologies

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD 3N90 3A, 900V N-CHANNEL POWER MOSFET  DESCRIPTION The UTC 3N90 provides excellent RDS(ON), low gate charge and operation with low gate voltages. This device is suitable for use as a load switch or in PWM applications.  FEATURES * RDS(ON) < 4.8 Ω @ VGS = 10 V * Fast Switching Capability * Avalanche Energy Specified * Improved dv/dt Capability, High Ruggedness  SYMBOL Power MOSFET  RDERING INFORMATION Note: Ordering Number Lead Free Halogen Free 3N90L-TA3-T 3N90G-TA3-T 3N90L-TC3-T 3N90G-TC3-T 3N90L-TF3-T 3N90G-TF3-T 3N90L-TF1-T 3N90G-TF1-T 3N90L-TF2-T 3N90G-TF2-T 3N90L-TQ2-T 3N90G-TQ2-T 3N90L-TQ2-R 3N90G-TQ2-R Pin Assignment: G: Gate D: Drain S: Source Package TO-220 TO-230 TO-220F TO-220F1 TO-220F2 TO-263 TO-263 Pin Assignm [ ... ]

3N90 PDF Datasheet Download