Ceramic materials with high permittivity, high Q and very good temperature stability are useful for TEM mode coaxial resonators, TE mode dielectric resonators, RF filters, special capacitors and dielectric substrates for microwave circuits. Frequency range: from 0.3 GHz to 24 GHz.
| Symbol (Unit) | Material | ||||
|---|---|---|---|---|---|
| E-37 | E-20 | E-11 | E-75 | ||
| Products | Coaxial, Cylinders, Substrates | Coaxial, Substrates, Cylinders | Substrates, Coaxial, Supports | Coaxial, Cylinders | |
| Permittivity | er | 36.5 ... 38 | 19.5 ... 21 | 10.5 ... 11.5 | 74 ... 78 |
| Unloaded Q-factor | Q0 (at 10 GHz) | 5 000 | 6 000 | 6 000 | 1 500 |
| Temperature coefficient |
TCf (ppm K-1) | - 6 ... 12 ± 1 | - 4 ... 9 ± 1 | - 40 ± 5 | |
| Density | r (g cm-3) | 5.1 | 3.7 | 3.5 | 4.8 |
| Insulation resistivity | r (W cm) | 1013 | 1013 | 1013 | 1013 |
| Color | greygreen | beige | creamwhite | brown | |