ECCN.DEV by Cancelli

3A228 Category 3A

Switching devices, as follows (see List of Items Controlled).

Category 3: Electronics

Reasons for control

Country chart

ControlColumn
AT applies to entire entryAT 1
NP applies to entire entryNP 1

List-based license exceptions

ExceptionAs stated in the entry
GBS N/A
LVS N/A

Items

  1. (2) Also see ECCN 3A991.k.
  2. Items: a. Cold-cathode tubes, whether gas filled or not, operating similarly to a spark gap, having all of the following characteristics:
  3. a.1. Containing three or more electrodes;
  4. a.2. Anode peak voltage rating of 2.5 kV or more;
  5. a.3. Anode peak current rating of 100 A or more; and
  6. a.4. Anode delay time of 10 µs or less.
  7. b. Triggered spark-gaps having both of the following characteristics:
  8. b.1. An anode delay time of 15 µs or less; and
  9. b.2. Rated for a peak current of 500 A or more.
  10. c. Modules or assemblies with a fast switching function having all of the following characteristics:
  11. c.1. Anode peak voltage rating greater than 2 kV;
  12. c.2. Anode peak current rating of 500 A or more; and
  13. c.3. Turn-on time of 1 µs or less.

Related controls

(1) See ECCNs 3E001 (“development” and “production”) and 3E201 (“use”) for technology for items controlled under this entry.

Notes

Technical Note: 3A228.a includes gas krytron tubes and vacuum sprytron tubes.

Source: eCFR, version 2026-08-01, retrieved 2026-08-20T04:04:59+00:00.