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Cubic Diodes Farming in Warframe (2026): Corpus Proxima and Europa Eximus
Break Corpus containers in Proxima, or kill Eximus on Larzac
Last Updated on September 30, 2026
The short answer
Cubic Diodes come from two places: Corpus Proxima Railjack missions and Eximus units on the Corpus Ice Planet tileset. On foot, run Larzac (Europa), a Dark Sector Defense full of Eximus units. In Railjack, break every Corpus storage container, with Xaku doing the reach.
Reviewed September 29, 2026, current through Update 44 (Iceblade of Narin); node and mission types checked against the live star chart. This page is re-checked after every major patch.
| Where | Mission | Why |
|---|---|---|
| Corpus Proxima (Venus, Neptune, Pluto) | Railjack missions | Every finished mission rolls two Extra bundles, one entry is 200 Cubic Diodes |
| Larzac (Europa) | Dark Sector Defense | Corpus Ice Planet tileset, +25% resource bonus, many Eximus |
| Ose (Europa) | Interception | Endless mode on the Corpus Ice Planet tileset |
| Nereid (Neptune) | Spy | Corpus Ice Planet tileset, a recommended run |
| Cholistan (Europa) | Dark Sector Excavation | Corpus Ice Planet tileset, Dark Sector bonus |
Table of Contents
Every place it drops
Cubic Diodes drops on: Europa, Neptune, Venus Proxima, Neptune Proxima, Pluto Proxima.
The fast route
- Pick a Corpus Proxima mission (Venus, Neptune or Pluto) and launch your Railjack.
- Board the Corpus segments and break every storage container. They carry Cubic Diodes.
- Finish the mission. It rolls two Extra resource bundles, and 200 Cubic Diodes is one entry.
- No Railjack yet? Run Larzac (Europa) Defense and kill every Eximus unit.
- Stay past wave 15. Eximus units get more common as waves climb.
Best farming frames
| Frame | Role | Why |
|---|---|---|
| Xaku | Container popper | The Vast Untime blast destroys objects in range, so containers pop as you run. |
| Frost | Defense anchor | Snow Globe shields the Larzac objective while you hunt Eximus units. |
Tips that save runs
- Loot abilities do not raise Cubic Diodes from Eximus units. The drop is a fixed 50% roll.
- Storage containers give ordinary loot, so a retriever mod can double what you take.
- Endless modes on Europa spawn more Eximus units at higher waves.
Mistakes that waste runs
- Bringing Nekros or Hydroid for the Eximus drop. Loot abilities do not apply to it.
- Farming the Ceres Shipyard tileset. Its Eximus units drop Carbides, not Cubic Diodes.
- Skipping containers in Proxima ground segments. They are the fastest source there.
What it builds
| Item | Note |
|---|---|
| Railjack armaments and reactors | The main resource for building and upgrading them |
| Railjack Fuselage | Needed for the Rising Tide build |
| Protea Neuroptics | 1,250 Cubic Diodes |