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RO4350B is a glass-reinforced hydrocarbon/ceramic laminate designed for high-performance RF applications. It offers excellent electrical performance at competitive prices, with a tightly controlled dielectric constant (Dk) of 3.48 ±0.05, low loss, and excellent stability across frequency and temperature ranges.
| Peel Strength (1 oz) | 6 lb/in |
| Flexural Strength | 276 MPa |
| Density | 1.86 g/cm³ |
| Moisture Absorption | 0.06% |
| Flammability | UL 94 V-0 |
These calculations use simplified approximations for quick estimates. For production designs, please use a field solver or request accurate stack-up data from your PCB manufacturer. Results are based on RO4350B's typical Dk of 3.48 at 10 GHz.
| Total Thickness | 62.8 mil |
| Dielectric Thickness (L1-L2) | 10 mil |
| Prepreg Thickness | 4 mil |
| Effective Dk (avg) | 3.50 |
| Recommended for | Up to 20 GHz |
| RO4450F | Dk 3.52, 4 mil |
| RO4450B | Dk 3.54, 4 mil |
| RO4403 | Dk 3.17, 3 mil |
💡 RO4450F is recommended for hybrid builds with RO4350B core for optimal Dk matching.
| Thermal Conductivity | 0.69 W/mK |
| Tg (Glass Transition) | >280°C |
| Td (Decomposition) | 390°C |
| CTE (X, Y) | 14 ppm/°C |
| CTE (Z) | 46 ppm/°C |
| Max Operating Temp | -40 to +85°C |
Rogers RO4350B is optimized for applications from DC to 20+ GHz. Its tight Dk tolerance (±0.05) and low loss tangent (0.0037) make it ideal for demanding RF/microwave circuits where phase consistency and signal integrity are critical.
Power amplifiers, filters, and antenna feed networks requiring stable performance across temperature variations.
700 MHz - 6 GHz77GHz ADAS radar sensors for collision avoidance, adaptive cruise control, and autonomous driving systems.
24 GHz / 77 GHzLNBs, block upconverters, and ground station equipment for VSAT and broadcast satellite systems.
Ku/Ka BandWiFi 6/6E access points, small cells, and distributed antenna systems for enterprise and industrial IoT.
2.4 / 5 / 6 GHzGaN and LDMOS PA designs for cellular, broadcast, and military communications requiring high thermal stability.
DC - 6 GHzCalibration boards, probe cards, and reference standards requiring consistent and repeatable performance.
DC - 20+ GHzGet a preliminary cost estimate for your RO4350B PCB project. Actual pricing depends on specifications, quantity, lead time, and current material availability. For accurate quotes, please use the "Request Quote" button.
| Item | Description | Est. Cost |
|---|---|---|
| RO4350B Material | 4-layer, 10 mil core | $85.00 |
| Fabrication | Standard processing | $45.00 |
| Surface Finish | ENIG | $25.00 |
| Testing | E-test, visual inspection | $15.00 |
| Estimated Total | 10 pcs @ 100×80mm | $170.00 |
Compare RO4350B with other popular RF/microwave PCB materials to select the best option for your application requirements.
| Property | RO4350B | RO4003C | FR-4 | RT/duroid 5880 | Megtron 6 |
|---|---|---|---|---|---|
| Dk @ 10GHz | 3.48 | 3.38 | 4.2-4.5 | 2.20 | 3.4 |
| Df @ 10GHz | 0.0037 | 0.0027 | 0.02 | 0.0009 | 0.002 |
| Dk Tolerance | ±0.05 | ±0.05 | ±0.3 | ±0.02 | ±0.05 |
| Thermal Conductivity | 0.69 W/mK | 0.71 W/mK | 0.3 W/mK | 0.20 W/mK | 0.4 W/mK |
| CTE (Z-axis) | 46 ppm | 46 ppm | 70 ppm | 237 ppm | 25 ppm |
| FR-4 Processing | Yes | Yes | Yes | No (PTFE) | Yes |
| Relative Cost | $$ | $$ | $ | $$$$ | $$$ |
| Max Frequency | 20+ GHz | 20+ GHz | ~3 GHz | 77+ GHz | 25 GHz |
| Best For | Cost-effective RF | Low-loss RF | Low-freq digital | mmWave/space | High-speed digital |