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The Crystalline Electronic Unit is an upgrade material in Arknights, introduced alongside Episode 08.


An expensive Originium industry product. Can be used for major upgrades.

A crystallization of Terra's Originium technology. A symbol of Terra's industrial modernization. From Originium Casting units to intercity network servers, their making all starts with inventions like these.


The third of the Crystalline-type upgrade materials, Crystalline Electronic Units are an electronic control unit that integrates a Crystalline Circuit and used as one of the major components of advanced Originium-based electronic devices in Terra, from high-performance Arts catalysts to mainframes and supercomputers. Crystalline Electronic Units are required for the skill Mastery training and Elite 2 promotion of certain Operators introduced from Episode 08 onwards.



Product Material(s) LMD Morale Requires
Crystalline Electronic Unit.png
Crystalline Circuit.png
Polymerized Gel.png
Incandescent Alloy Block.png
400 LMD icon.png Morale icon.png Level 3 Workshop
Clear S5-9


  • Before the Who is Real update in the Global server, the material is named Crystalline Electroassembly.
  • The Crystalline Electronic Unit is currently considered the hardest material to acquire by the Arknights community because:
    • It is the only T5 upgrade material that are part of an upgrade material type (Crystalline).
    • Along with Bipolar Nanoflake.png Bipolar Nanoflake, the Crystalline Electronic Unit is the only T5 upgrade material that requires two of a particular T4 material (in this case, two Polymerized Gel.png Polymerized Gel) to produce one.

See also