ECCN 3A904
NSRSATCryogenic cooling systems and components, as follows .
What This ECCN Covers
ECCN 3A904 controls cryogenic cooling systems and components meeting the criteria in the entry — for example certain closed-cycle cryocoolers and dilution refrigerators. These systems support infrared sensors, superconducting electronics, and quantum computing, and are controlled for National Security, Regional Stability, and Anti-Terrorism reasons.
Who needs to check this?
Suppliers of cryocoolers, dilution refrigerators, and cryogenic subsystems for sensing, superconducting, and quantum-computing applications.
Compliance tip
Confirm your cooler against the specific characteristics in the entry, since general laboratory cooling may fall outside. The RS reason can add destination-specific restrictions; verify the Country Chart and apply Part 744 end-use diligence for quantum or sensor applications.
Items Covered
- a.Systems rated to provide a cooling power greater than or equal to 600 µW at or below a temperature of 0.1 K (−273.05 °C) for a period of greater than 48 hours;
- b.Two-stage pulse tube cryocoolers rated to maintain a temperature below 4 K (−269.15 °C) and provide a cooling power greater than or equal to 1.5 W at or below a temperature of 4.2 K (−268.95 °C).
Control Reasons
Items controlled for national security reasons under multilateral export control regimes.
Items controlled for regional stability reasons.
Items controlled for anti-terrorism reasons. Most items on the CCL have AT controls.
Disclaimer
This information is for reference only. For official classifications, consult BIS or a qualified export control professional.