Vital components used in the creation of Corpus photon-networks.

—In-Game Description

Cubic Diodes are an uncommon component that can be found on Ceres, on any Grineer Shipyard node, and only dropped by Eximus units. They are used in constructing the Railjack.

Blueprints Requiring Cubic Diodes

Blueprint Type Quantity
Railjack Fuselage Research Component (100)
Total (+100)

Last updated: Update 26.1


Gathering Tips

  • This item can only be acquired in the Grineer Shipyard tileset on Ceres, occasionally dropped by Eximus units on death. This resource will not drop from enemies in other tilesets, regardless of Eximus status. 
  • Prosecuters count as Eximus units, thus dropping Cubic Diodes, making Exta a good farming spot.
  • Kuva Lich missions can spawn Eximus units more often as a result of their higher level, allowing for easier farming.
  • Seimeni can be a good node to farm if no higher level missions are available, providing 80 Cubic Diodes in one 20 wave set in one test.
  • The Mobile Defense node Kiste can be good for a quick way to farm due to the high chance of Prosecutors spawning. These Prosecutors are considered as Eximus units and can drop the resource.


  • This item was first previewed in Devstream 133, November 2019
  • Clan Tier does not affect the research cost of the Railjack Fuselage repairs.



Patch History

Update 26.1
  • Introduced.
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