High purity (99.6%) Alumina Substrate |
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Kyocera provides Microwave Integrated Circuits (MIC)
ceramic substrates with thin film patterns. High purity (99.6%)alumina substrate and high dielectric constant ceramic substrates are available. |
 High Dielectric Constant (High K) Substrate |
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Size of microwave circuits can be reduced because of high dielectric constant. |
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High Q values at high frequencies |
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Stable circuit operation due to low thermal coefficient of dielectric constant |
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Thin film resistor (Ta2N) is available. |
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| Ceramic Material Codes |
SV380 |
SH890 |
K140 |
| Dielectric Constant |
38+/-1 |
89+/-1 |
140+/-2 |
| Q Values |
>4000
(@10GHz)
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>1800
(@2.6GHz) |
>1000
(@5GHz) |
| Thermal Coefficient of Dielectric Constant (ppm/K) 20 to 60oC |
-30+/-30 |
-35+/-30 |
900+/-200 |
| Coefficient of Thermal Expansion (ppm/K) 40 to 400oC |
10.3 |
10.1 |
10.8 |
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| Note: Material properties mentioned above are typical values. These values may change upon further improvement or modification of these materials and processes. |
| Resistor Material |
Ta2N |
| Sheet Resistance (Ω/SQ) |
10 to 100 |
| Thermal Coefficient of Resistance (ppm/K) -25 to 85oC |
-100+/-20 |
| Tolerance: without trimming |
+/-20% |
| Tolerance: with trimming |
+/-3% |
Long Term Reliability:
Resistance Change after High Temperaturte Storage
(125oC, 1000 Hours) |
0.4% max. |
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