3A904 Category 3A
Cryogenic cooling systems and components, as follows (see List of Items Controlled).
Category 3: Electronics
Reasons for control
- NS: National security
- RS: Regional stability
- AT: Anti-terrorism
Country chart
| Control | Column |
|---|---|
| AT applies to entire entry | AT 1 |
| NS applies to entire entry | None |
| RS applies to the entire entry | None |
List-based license exceptions
| Exception | As stated in the entry |
|---|---|
| GBS | N/A IEC: Yes, see § 740.2(a)(22) and § 740.24 of the EAR. |
| LVS | N/A |
Items
- Related Controls: See ECCN 3E901 for related technology controls for the “development” or “production” of this ECCN.
- Related Definitions: N/A
- 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).
Source: eCFR, version
2026-08-01, retrieved
2026-08-20T04:04:59+00:00.