SQUID3 Space™ ITO Coated Silver AlphaFEP is a conductive flexible film radiator technology capable of mitigating differential charging and electrostatic discharge (ESD). This product combines the proven thermo-optical performance of Ag/FEP with a transparent Indium Tin Oxide (ITO) conductive coating on the top surface.

Also known as Silver Teflon® or Ag/FEP, SQUID3's Silver AlphaFEP is commonly implemented as a Flexible Optical Solar Reflector (FOSR). From LEO small satellites to mega constellations, Silver AlphaFEP is optimized for bonding on wide-profiled structural panels. On-orbit degradation is well-characterized by NASA, ESA, and JAXA in flight literature. Silver AlphaFEP incorporates FEP film exclusively extruded from Teflon® FEP 100 resin.

The ITO layer provides a dissipative surface that can help reduce charge accumulation on exposed dielectric surfaces when properly bonded to spacecraft electrical ground. This configuration is particularly beneficial for missions operating in charging-prone environments such as polar LEO, Sun-synchronous orbit (SSO), MEO, auroral-crossing trajectories, and other high-radiation plasma environments.

For spacecraft charging mitigation, the ITO layer should be intentionally electrically bonded to spacecraft ground. A floating conductive coating may provide limited charging mitigation benefits depending on the spacecraft electrical architecture.

Applications

• Spacecraft Thermal Control

• Second Surface Mirrors

• Electrostatic discharge (ESD) mitigation

• Sensitive avionics and RF payload environments

• Polar-orbiting spacecraft

• High-voltage space systems

Optical Performance

• Solar Absorptance: <15%

• Infrared Emittance: 70-85% (depending on film thickness)

Customization

• Film thickness is available in 5 and 10 mil

• Maximum film width is 48 inches

Qualification & Testing

• This product meets NASA requirements for low thermal vacuum outgassing (ASTM E-595) where TML <1.0% and CVCM <0.1%