That looks like a "Phillips I2C" FET levelshifter based board.
I'd suggest to use BSS138 , hve a look @ Adafriut for the schematic , or the Philips I2C AppNote.
But TI (and other) makes some nice IC based ones
that doesnt look like a FET in the ebay listing, it looks like some kind of chip.
does anyone know the chip number for TI for such chip, digikey cant find any.
i also want a chip based solution to this .