BPI-D1 burned part

Hi all,

I have a problem with my BPI-D1 board. One part is burned out, the sign of the part is Y1 (see the picture, in the red circle). Anybody know what is it? Transistor or zener diode?

https://drive.google.com/file/d/0B3O93m8Nf4j-QU5tQUYwbGNZUlk/view?usp=sharing

Thanks

Staycool

you can see this document:

https://bananapi.gitbooks.io/bpi-d1/content/

I checked. This is SS8050-Y1 NPN transistor, right? https://www.google.hu/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwj1n6_TrsfLAhWBE5oKHZBjCLEQFggaMAA&url=https%3A%2F%2Fjb8a8f8.com%2Fsupport%2Findex.php%3Fattachments%2Fq200-q001-q501-q401_5l0565_psu-y1-pdf.274%2F&usg=AFQjCNE88dcU5h85WOf7zyXUSUL2bVkzFg&sig2=7MB5RK5jHfZ4ZYi5tsaaPQ&bvm=bv.117218890,d.bGs&cad=rja

THX

SS8050 , yes ,it is right