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Apogee Semiconductor

Radiation-hardened chips for space and defense

Raised to date

$4.5M

of $5M offered across 1 Form D filing

Still open
$500K
Investors
6
Last filed
Jun 11, 2026

About

Apogee Semiconductor designs and sells radiation-hardened integrated circuits for space, aerospace and defense systems from Plano, Texas. Its parts are built for fault containment around commercial off-the-shelf components, letting designers use affordable COTS silicon while Apogee devices protect critical system boundaries in radiation environments. The catalog covers logic, buffers, flip-flops and registers, I/O expanders, level translators, transceivers and power switches, with total ionizing dose capability up to 300 krad. The company was founded in 2017 and its parts have flight heritage.

Radiation hardening designed into the architecture as fault containment rather than achieved by post-manufacture screening, so system builders get space-grade reliability while still using cost-effective commercial components elsewhere in the design.

Funding

  • EquityFiled Jun 11, 2026Form D
    $4.5M/ $5M

Product

Radiation-hardened integrated circuits

Radiation-hardened semiconductors

A family of rad-hard logic, interface and power ICs, including the TalRad family, engineered to contain faults around commercial off-the-shelf components in space and other extreme-radiation environments.

  • Fault containment designed in rather than achieved by post-screening
  • Zero-Power-Penalty Cold Sparing to eliminate current leakage on unpowered rails
  • Monolithic majority voter IC, an industry first in 2021

Built for

Space, aerospace and defense system designers building LEO and GEO satellites, constellations and other high-reliability platforms

People on file