This part is a kind of semiconductor called HS16-102CS.

Function of this product has HIGH SPEED LAN 10/100BASE-TX MAGNETIC MODULE.

Manufacturers : THCOM

Image and pinout :

Some of the text within the PDF file :

THCOM HIGH SPEED LAN 10/100BASE-TX MAGNETIC MODULE(SMD) F eature: M Operating Temperature -40 ℃ To 85 ℃ M Designed To Meet IEEE802.3, ANSI X3.263 Standards M 16 PIN SMT Designed For Reflow Soldering Temperatures Up To 245 ℃ M Low Leakage Inductance And Winding Capacitances of Fast Rise Time High Isolaion Voltages To Comply With International Safety. M Requirement For LAN . M Half Port and Single Port Designs for Maximum Layout Flexibility. M Compatible With INTEL ,TDK,QSI and Lcs Transiversce. M For ROHS Part add postfix G. T Isolation Voltage :1500Vrms. E LECTRICAL CHARACTERISTICS @25 ℃ Rise Time & Fall Time @ 5.0nS(Max),Isolation Hi-pot:1500Vrms(pri/sec),Pri.OCL:TX&RX:350uH Min@Idc=8mA Return Loss Common Mode Cross Talk Cw/w DC Turn Ratio Insertion Loss (dB Min) Rejection Rati [ ... ]

HS16-102CS PDF Datasheet Download