15 CFR § 231.118 - Semiconductors critical to national security.

---
identifier: "/us/cfr/t15/s231.118"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "15 CFR § 231.118 - Semiconductors critical to national security."
title_number: 15
title_name: "Commerce and Foreign Trade"
section_number: "231.118"
section_name: "Semiconductors critical to national security."
chapter_name: "NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, DEPARTMENT OF COMMERCE"
subchapter_number: "C"
subchapter_name: "CHIPS PROGRAM"
part_number: "231"
part_name: "CLAWBACKS OF CHIPS FUNDING"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "15 U.S.C. 4651,"
regulatory_source: "88 FR 61614, Sept. 25, 2023, unless otherwise noted."
cfr_part: "231"
---


# 231.118 Semiconductors critical to national security.

*Semiconductors critical to national security* means:

(a) Semiconductors utilizing nanomaterials, including 1D and 2D carbon allotropes such as graphene and carbon nanotubes;

(b) Compound and wide- and ultra-wide bandgap semiconductors;

(c) Radiation-hardened by process (RHBP) semiconductors;

(d) Fully depleted silicon on insulator (FD-SOI) semiconductors, other than with regard to semiconductor packaging operations with respect to such semiconductors of a 28-nonometerer generation or older;

(e) Silicon photonic semiconductors;

(f) Semiconductors designed for quantum information systems;

(g) Semiconductors designed for operation in cryogenic environments (at or below 77 Kelvin); and

(h) Any other semiconductors that the Secretary, in consultation with the Secretary of Defense and the Director of National Intelligence, determines is critical to national security and issues a public notice of that determination.