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ECCN reference · Category 3: Electronics

ECCN 3B903

Scanning Electron Microscope (SEM) equipment designed for imaging semiconductor devices or integrated circuits, having all of the following

Test, inspection and production equipment. Reasons for control: NS (National security), RS (Regional stability), AT (Anti-terrorism).

Does 3B903 need a license to your country?

Enter the full classification (for example 3B903.a) and a destination. The check reads the Country Chart, the end-use and embargo rules, and shows the rule and source behind the answer.

License requirement check

Item classification and destination. No account needed.

An ECCN (such as 5A992.c) is an exact match and works best. Word search matches the official CCL wording and a reviewed list of everyday names as you write them; it does not guess what you mean or fix spelling. Don’t know the ECCN? Use Find the ECCN.

License requirements

Each control below comes from the entry’s License Requirements table. Where it names a Country Chart column, the countries with an X in that column need a license for the items the control covers, unless a License Exception applies.

  • NS (National security): NS applies to entire entry. Worldwide control. See § 742.4(a)(5) and (b)(10) of the EAR.
  • RS (Regional stability): RS applies to the entire entry. Worldwide control. See § 742.6(a)(10) and (b)(11) of the EAR.
  • AT (Anti-terrorism): AT applies to entire entry. No Country Chart country has an X in column AT1; the destinations this control targets are under “Not decided by the Country Chart” below.

Not decided by the Country Chart: Covered Donetsk region of Ukraine (DNR), Covered Luhansk region of Ukraine (LNR), Crimea region of Ukraine, Cuba, Iran, Korea, North, Syria. These destinations are under embargoes or other special controls in 15 CFR Part 746, which require a license for most items whatever the chart shows. Russia and Belarus also have broad Part 746 controls in addition to the chart.

A blank on the Country Chart is not permission to ship. End-use and end-user rules (15 CFR Part 744), embargoes and sanctions (Part 746), and the parties to the transaction still apply. Use the check above for your item and country.

List-based License Exceptions

As the entry lists them. Each exception has its own conditions in 15 CFR Part 740, and § 740.2 bars or limits most of them for Russia, Belarus, Country Group D:5 and embargoed destinations, so an entry’s “Yes” does not mean it is available everywhere.

  • LVS: N/A
  • GBS: N/A
  • IEC: Yes, see § 740.2(a)(22) and § 740.24 of the EAR.
  • Special Conditions for STA
  • STA: License Exception STA may not be used to ship any item in this ECCN to any of the destinations listed in Country Group A:5 or A:6 (See Supplement No. 1 to part 740 of the EAR).

Items in 3B903

The controls often apply to some paragraphs only, so check the full paragraph, for example 3B903.a.

Show all 7 paragraphs
  • 3B903.a Stage placement accuracy less (better) than 30 nm;
  • 3B903.b Stage positioning measurement performed using laser interferometry;
  • 3B903.c Position calibration within a field-of-view (FOV) based on laser interferometer length-scale measurement;
  • 3B903.d Collection and storage of images having more than 2 x 10^8 pixels;
  • 3B903.e FOV overlap of less than 5 percent in vertical and horizontal directions;
  • 3B903.f Stitching overlap of FOV less than 50 nm; and
  • 3B903.g Accelerating voltage more than 21 kV.

Source

Commerce Control List, 15 CFR Part 774, Supplement No. 1 (official text on eCFR), as of August 21, 2026, 1:45AM EDT. Commerce Country Chart, Supplement No. 1 to Part 738, as of August 21, 2026, 1:45AM EDT.

This page is a preliminary reference, not legal advice, a classification ruling or permission to ship. Confirm the classification against the full official text.