It is the SAMSUNG HS12UHE with a LIF (low insertion force) connector.
As far as getting disks (ssd/hdd) with the sata lif connector, it is near impossible...
The only option at this point is to either somehow get the SSD from a broken mba rev. b off ebay, or hacking up a connector for micro sata.
I have examined the hdd in my mba and think I can separate the strands of the ribbon. This would allow to solder the leads onto a micro-sata connector on, say, an intel x18-m SSD.
Regarding dimensions, drives with the micro-sata connector will need some modding to fit, either shifting the drive cage or removing part of the connector.
Good luck