Dielectric Material Lookup
Search common PCB substrates to find standard Dielectric Constant (Dk) and Dissipation Factor (Df) values for your RF and high-speed designs.
| Manufacturer | Material Name | Design Dk (Er) | Loss Tangent (Df) |
|---|---|---|---|
| Rogers | RO4350B | 3.48 | 0.0037 |
| Rogers | RO4003C | 3.55 | 0.0027 |
| Rogers | RO4835 | 3.48 | 0.0037 |
| Rogers | RO3003 | 3.00 | 0.0010 |
| Rogers | RO3006 | 6.15 | 0.0020 |
| Rogers | RO3010 | 10.20 | 0.0022 |
| Rogers | RT/duroid 5880 | 2.20 | 0.0009 |
| Rogers | RT/duroid 5870 | 2.33 | 0.0012 |
| Rogers | RT/duroid 6002 | 2.94 | 0.0012 |
| Rogers | RT/duroid 6010.2LM | 10.20 | 0.0023 |
| Rogers | TMM 3 | 3.27 | 0.0020 |
| Rogers | TMM 4 | 4.50 | 0.0020 |
| Rogers | TMM 10 | 9.20 | 0.0022 |
| Rogers | TMM 10i | 9.80 | 0.0020 |
| Rogers | RO4450T (Prepreg) | 3.23 | 0.0039 |
| Isola | 370HR | 4.04 | 0.0210 |
| Isola | IS410 | 4.10 | 0.0140 |
| Isola | FR408 | 3.66 | 0.0117 |
| Isola | FR408HR | 3.68 | 0.0092 |
| Isola | Astra MT77 | 3.00 | 0.0017 |
| Isola | Tachyon 100G | 3.02 | 0.0021 |
| Isola | Tachyon 100GZ | 3.04 | 0.0017 |
| Isola | I-Speed | 3.30 | 0.0071 |
| Isola | I-Tera MT40 | 3.45 | 0.0031 |
| Isola | I-Tera MT40 RF | 3.38 | 0.0028 |
| Isola | TerraGreen | 3.44 | 0.0030 |
| Isola | TerraGreen 400G | 3.10 | 0.0018 |
| Isola | IS400 | 4.15 | 0.0140 |
| Isola | IS550H | 4.10 | 0.0170 |
| Isola | IS300MD | 4.00 | 0.0200 |
| Panasonic | Megtron 4 | 3.80 | 0.0050 |
| Panasonic | Megtron 6 | 3.71 | 0.0020 |
| Panasonic | Megtron 6G | 3.46 | 0.0015 |
| Panasonic | Megtron 7 | 3.30 | 0.0010 |
| Panasonic | Megtron 8 | 3.10 | 0.0010 |
| Panasonic | R-1566W | 4.60 | 0.0140 |
| Panasonic | Felios (LCP) | 2.90 | 0.0020 |
| Panasonic | R-5775 | 4.10 | 0.0130 |
| AGC (Taconic) | RF-35 | 3.50 | 0.0018 |
| AGC (Taconic) | TLY-5 | 2.20 | 0.0009 |
| AGC (Taconic) | TLX-8 | 2.55 | 0.0019 |
| AGC (Taconic) | CER-10 | 10.00 | 0.0035 |
| AGC (Taconic) | TRF-43 | 4.30 | 0.0035 |
| AGC (Taconic) | TLC-27 | 2.75 | 0.0022 |
| AGC (Taconic) | RF-60A | 6.15 | 0.0028 |
| Nelco | N4000-13 | 3.70 | 0.0090 |
| Nelco | N4000-13 EP | 3.20 | 0.0080 |
| Nelco | Meteorwave 1000 | 3.28 | 0.0028 |
| Nelco | Meteorwave 2000 | 3.30 | 0.0020 |
| Nelco | Meteorwave 8000 | 3.26 | 0.0016 |
| Shengyi | S1000-2 | 4.30 | 0.0140 |
| Shengyi | S1141 | 4.40 | 0.0150 |
| Shengyi | S7439 | 3.20 | 0.0035 |
| Shengyi | SCGA-500 | 3.00 | 0.0015 |
| Shengyi | S7338 | 3.38 | 0.0030 |
| Ventec | VT-901 | 4.00 | 0.0150 |
| Ventec | VT-4B5 | 4.20 | 0.0120 |
| Ventec | tec-speed 20.0 | 3.00 | 0.0015 |