Used at higher frequencies than traditional shielding and can also be used with other EMI/RFI shields to extend frequency range
These absorbers can be used at higher frequencies than traditional shielding and can also be used with other EMI/RFI shields to extend frequency range.
The microwave absorbers can be installed easily with Pressure-sensitive Adhesive (PSA), often directly onto high-frequency board-level components, to absorb unwanted radiated and surface-wave EMI/RFI and to meet FCC requirements without shielding.
Our 3500 series Microwave absorber foam is RoHS compliant. It is a coated open-cell foam and used as a microwave absorbing material, especially for applications with frequencies of 1 to 17 GHz. The product acts like a free-space resistor to incoming electromagnetic energy.
The 3500 series Microwave absorber foam is available in a soft (3500) and a hard (3501) variant. The type you choose depends on the force you want the foam to withstand, if necessary.
Microwave absorber products can solve EMI/RFI problems without additional shielding and enable advanced technologies including automotive radar, military, and commercial wireless applications.
Typical applications:
Versions:
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Microwave absorber foam, soft version:
Standard sheet
Temperature specification: – 40°C to +100°C
Hardness shore: 40 +/- 20
Die-cut: Material can be cut into any shape according to customer’s drawing. For a quote, please send a drawing with the desired quantities to info@japanhomeland-security.jp .
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Part number examples:
| Part number | Features |
| 3500/3501-555-355 or 3500/3501-355-255 | Standard sheet size: 555×355 mm or 355×255 mm |
| 3500/3501-x-x | Foam customized settings Max. sheet size 1000×1000 mm |
3500 series – Reflection loss
| 15mm |
| 5mm |
| 3mm |
Please note: These values are measured under laboratory conditions. Results may vary in other situations; please read our Guarantee.
Product specifications
| Property | ISO | Unit | IP 45 |
| Density | 845 | Kg/m3 | 42 – 48 |
| Tensile strength | 1798 | kPa | 298-337 |
| Elongation strength | 1798 | % | 30 – 41 |
| Compression deflection strength | 844 | kPa | |
| 25% | 844 | kPa | 55 – 75 |
| 50% | 844 | kPa | 123 – 145 |
| 24h | 1856 | % | 6.0 |
| Working temperature range | Celcius | -60/+80 | |
| Thermal conductivity at 0 degrees Celcius | 8301 | W/mK | 0.04 |
| Water absorption 7 days | Vol. % | <1 | |
| Flammability | FMVSS302 | Pass | |
| Surface resistivity | IEC-61340 | Ohm | 10^7 |
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