Erm.. I contacted Digikey and it seems they ran out of these.. I wouldn't bet my hopes too high if I were you.
Inform us if you manage to buy it. You'd be doin' me a favor for that, man.
I am working on lightning research using a low light camera. We have a GPS that calculates UTC timing and embeds the timing on the video (OSD). In addition, I would like to add an electronic compass that I can add to the video using OSD to know the direction the camera is pointing.
Dinsmore makes 'em as well, since the KMZ51/52 is discontinued from production. Otherwise, Farnell/Digikey offers better ones at much higher prices. Anyway, start a new thread for your question next time...