There are two groups using the name Diode on last.fm, a drum and bass outfit and this one:
Diode formed in 2001 in Perth. The group has previously released several independent recordings including "Messages" (2001). Their album “Diode” (2007) builds on these outings adding a tighter, more developed sound. Diode has played at the Tote bar in Melbourne as part of “Octopus 7, Don’t Show Me Your Poetry” and was feature in “Old Skool” at the Perth Institute of Contemporary Art.

Read more about Diode on Last.fm.