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. They drop from 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 24.8


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. 
  • Kuva Lich missions can spawn Eximi units more often as a result of their higher level, allowing for easier farming.


  • 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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