LAIRD SF4.5
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- 4.5 GHz Narrow-Band Absorption
- Flexible Metal-Surface Conformability
- 163 deg C Service Capability
Product Description
Eccosorb SF-4.5 is a black, silicone-based free-space resonant absorber sheet for narrow-band microwave reflection control at a 4.5 GHz design frequency. The 305 x 305 mm sheet is 2.30 mm thick and can be bonded to flat or curved metallic surfaces. Its flexible construction combines 73 Shore A hardness with a maximum service temperature of 163 deg C. The material addresses reflections, echoes, surface currents and cavity resonances in microwave assemblies. It is supplied as a free-space elastomer for metallic microwave structures.
Key features
- 4.5 GHz resonant response: Targets narrow-band free-space absorption at the exact design frequency.
- Flexible silicone sheet: Bonds to flat or curved metallic surfaces for reflection control.
- Maximum service temperature: Operates to a maximum of 163 deg C.
Applications
Applications include avionics; base stations, power amplifiers, active antenna units and small cells; naval and maritime systems; radar; and satellites.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Values describe the supplied silicone elastomer absorber sheet.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Black | Typical | |
| Density | 3.90 | g/cm^3 | Typical |
| Nominal thickness | 2.30 | mm | Exact part |
| Sheet dimensions | 305 x 305 | mm | Exact part |
| Hardness | 73 | Shore A | Typical |
| Shelf life | Minimum 720 | days | From date of shipment |
After-processing / final-state properties
Mechanical and power-handling values are typical for the Eccosorb SF family.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Design frequency | 4.5 | GHz | Exact part |
| Maximum service temperature | 163 | deg C | Typical |
| Power handling | 0.2 | W/cm^2 | Typical |
| Tensile strength | 1.0 to 6.0 | MPa | Typical family range |
| Elongation at break | 20 to 100 | % | Typical family range |
| Tear strength | 0.2 to 2.0 | N/mm | Typical family range |
