Curve tracer christmas calendar 20 – Tunnel Diode Today its time for one of the more interesting devices, a Tunnel Diode. The diode is a 3I306G off ebay. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading... Author: Thomas S. Knutsen Electronics engineer with interests in RF and analog electronics. View all posts by Thomas S. Knutsen