This part is a kind of semiconductor called SFI0805ML390C.

Function of this product has SMD Transient Voltage Suppressors.

Manufacturers : SFI

Image and pinout :

Some of the text within the PDF file :

SMD Transient Voltage Suppressors Table of contents Table of Contents…………………………………………..……… 1-1 Introduction…………………………………………………..….. 2-2 Transient Voltage Suppressors…………………………………. 3-3 Information for Designer…………………………………………. 4-5 Multilayer varistor introduction …………………….….……… 6-6 Part number identification ………………………………… 7-7 ML - A Series High surge protection………………………….. 8-8 ML - C Series Classification…….………………………………. 9-11 CH Series………………..………………………………….……… 12-12 ESD solution protection varistor……………… [ ... ]

SFI0805ML390C PDF Datasheet Download