RO4350B Dk and Df
Rogers RO4350B: design Dk 3.66 and Df 0.0037 at 10 GHz (Design Dk (process Dk 3.48 ± 0.05); Tg > 280 °C). In the pcbplanner material library it is listed under rf laminate materials.
Datasheet values
| Entry | Dk | Df | at | Tg | Construction and test method |
|---|---|---|---|---|---|
| RO4350B | 3.66 | 0.0037 | 10 GHz | — | Design Dk (process Dk 3.48 ± 0.05); Tg > 280 °C. |
Dk and Df depend on the glass style, the resin content and the test method, so the same product has different values in different constructions. Compare materials at the same frequency and, where possible, with the same method; for a construction not listed here, use the manufacturer’s construction table.
Dk and Df from 1 to 20 GHz
The datasheet gives one frequency. The table extends that point with the Djordjevic–Sarkar wideband Debye model, the same model the impedance and trace-loss calculators use: it keeps Df nearly flat and lets Dk fall slowly with frequency. These are model values, not measurements.
| Entry | 1 GHz | 2 GHz | 5 GHz | 10 GHz | 20 GHz |
|---|---|---|---|---|---|
| RO4350B | 3.68 / 0.0038 | 3.67 / 0.0038 | 3.67 / 0.0038 | 3.66 / 0.0037 | 3.65 / 0.0036 |
Each cell is Dk / Df.
Use it in a calculation
Similar materials
- Rogers RO4003C – design Dk 3.55 and Df 0.0027 at 10 GHz
- Rogers RO3003 – design Dk 3.0 and Df 0.001 at 10 GHz
- Rogers RT/duroid 5880 – Dk 2.2 and Df 0.0009 at 10 GHz
Other datasheet pages: Panasonic MEGTRON 6 · Panasonic MEGTRON 4 · Panasonic MEGTRON 7 · Isola 370HR · Isola FR408HR · Isola I-Speed · Isola Tachyon 100G · TUC TU-872 SLK · Shengyi S1141 · Shengyi S1000-2M · Nan Ya NP-155FR · DuPont Pyralux AP · DuPont Pyralux HP · Taiyo PSR-4000 solder mask
Sources
- Rogers RO4000 series data sheet (RO4003C, RO4350B), 2022. Design Dk 3.66 (RO4350B) / 3.55 (RO4003C) for 8–40 GHz; Df 0.0037 / 0.0027 at 10 GHz.