US bans 3nm processing technique exports on security grounds

@ 2022/08/17
China targeted

The United States is formally banning the export of four technologies tied to semiconductor manufacturing, calling the protection of the items "vital to national security."

The US Commerce Department's Bureau of Industry and Security (BIS) and enacted today, the rule will ban the export of two ultra-wide bandgap semiconductor materials, as well as some types of electronic computer-aided design (ECAD) technology and pressure gain combustion (PGC) technology.

The BIS said that the semiconductor materials gallium oxide and diamond will be subject to renewed export controls because they can operate under more extreme temperature and voltage conditions.

The Bureau said that capability makes the materials more useful in weapons. ECAD software, which aids design for a wide range of circuits, comes in specialized forms that supports gate-all-around field effect transistors (GAAFETs), which are used to scale semiconductors to 3 nanometers and below.

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