DIODES
| Date | Clue |
|---|---|
| 2026-03-22 | Some radio tubes |
| 2024-03-09 | Parts of LEDs |
| 2022-07-31 | Circuit board components |
| 2016-06-07 | Semiconductor devices |
| 2012-03-15 | Some electronic parts |
| 2010-11-05 | Some compact light sources |
| 2010-08-19 | Circuit components |
| 2006-09-14 | Circuit components |
| 1994-03-05 | Some semiconductors |