Pyralux AP Dk and Df
DuPont Pyralux AP: Dk 3.2 and Df 0.003 at 10 GHz (All-polyimide double-sided copper-clad laminate. Typical construction AP9121, ASTM D2520). In the pcbplanner material library it is listed under flex materials materials.
Datasheet values
| Entry | Dk | Df | at | Tg | Construction and test method |
|---|---|---|---|---|---|
| Pyralux AP polyimide (AP9121) | 3.2 | 0.003 | 10 GHz | — | All-polyimide double-sided copper-clad laminate. Typical construction AP9121, ASTM D2520. |
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 |
|---|---|---|---|---|---|
| Pyralux AP polyimide (AP9121) | 3.21 / 0.0031 | 3.21 / 0.0031 | 3.20 / 0.0031 | 3.20 / 0.0030 | 3.20 / 0.0029 |
Each cell is Dk / Df.
Use it in a calculation
Similar materials
- DuPont Pyralux HP – Dk 2.8 and Df 0.0035 at 10 GHz
Other datasheet pages: Panasonic MEGTRON 6 · Panasonic MEGTRON 4 · Panasonic MEGTRON 7 · Rogers RO4350B · Rogers RO4003C · Rogers RO3003 · Rogers RT/duroid 5880 · Isola 370HR · Isola FR408HR · Isola I-Speed · Isola Tachyon 100G · TUC TU-872 SLK · Shengyi S1141 · Shengyi S1000-2M · Nan Ya NP-155FR · Taiyo PSR-4000 solder mask
Sources
- DuPont Pyralux AP data sheet EI-10124. AP9121: Dk 3.2, Df 0.003 at 10 GHz, ASTM D2520.