On 08/09/16 21:24, Robin wrote:
On 08/09/2016 18:45, ARW wrote:
I know that it is a 30mm by 4mm glass capusle with some electronics
inside it.

But other than that I have no idea.

http://wiki.diyfaq.org.uk/images/2/2f/Wtf1.jpg



As others have said, looks like a low frequency transponder. TI do a
31x4 mm one:

http://elcodis.com/parts/1758759/RI-TRP-RR2B-20.html

An interesting data sheet - thanks for the link. I see that although
made of glass for biocompatibility, it will withstand 300g! It is also
hermetically sealed. I wondered how it could be sealed (as it appears to
be made completely of glass) without heat damaging the electronics
inside. Answered at
http://www.schott.com/epackaging/eng...ansponder.html where it
says the glass has a high iron content and can be sealed with a Nd:YAG
laser. Obviously the iron content isn't high enough to interfere with
the signal.

--

Jeff