This Lot (Qty.10) is New Raychem/Tyco/TE Connectivity Polyswitch SMD Resettable Fuse, Part Number: SMD100-02 Internal part number: 434213-000. The device allow the circuit to open when exceed certain current in order to protect the circuit. It will reset to normal when current is normal.
General Spec for SMD100-02:
Data Sheet(note following data sheet is for RoHS version SMD100F-2, but part we sell here is non RoHS version without F, F stand for RoHS Version):
http://www.mouser.com/catalog/catalogusd/646/749.pdf
http://www.te.com/catalog/pn/en/RF0318-000
http://rfbayinc.com/upload/files/data_sheet/smd_polyswitch.pdf