What circuit boards do we do?(5)
RO4350B High Frequency PCB
Brief introduction
Rogers RO4350B laminates are a proprietary blend of woven glass reinforced hydrocarbon/ceramics that offer electrical performance comparable to PTFE/woven glass and the manufacturability advantages of epoxy/glass.
RO4350B materials exhibit precise control over dielectric constant (Dk) while maintaining low loss, using the same processing method as standard epoxy/glass laminates. They are a cost-effective alternative to traditional microwave laminates and eliminate the need for specialized through-hole treatments or handling procedures required by PTFE-based materials. These materials have achieved UL 94 V-0 rating, making them suitable for active devices and high-power RF designs.
Features
One of the key features of RO4350B is their low dielectric constant of 3.48 at 10 GHz. A low dielectric constant is desirable in high-frequency applications as it aids in minimizing signal loss and improving signal integrity.
RO4350B exhibits a dissipation factor of 0.0037 at 10 GHz. A low dissipation factor is crucial for minimizing signal loss and maintaining high signal quality in high-frequency circuits.
Another advantage of RO4350B is its excellent dimensional stability. It has a low Z-axis coefficient of thermal expansion at 32 ppm/°C. The expansion coefficient is similar to that of copper, which make the board's dimensions remain consistent even under varying temperature conditions.
RO4350B materials also have a high glass transition temperature (Tg) of over 280°C (536°F). The high Tg ensures that the PCB retains its structural integrity and dimensional stability even during the elevated temperatures experienced during the circuit assembly process.
PCB Capability
| PCB material: | Glass reinforced hydrocarbon ceramic laminates |
| Designator: | Rogers RO4350B |
| Dielectric constant: | 3.48 ±0.05 (process) |
| 3.65 (design) |
| Layer count: | Single Layer, Double Layer, Multi-layer, Hybrid Designs |
| Copper weight: | 1oz (35µm), 2oz (70µm) |
| Laminate thickness: | 4mil (0.102mm), 6.6mil (0.168mm), 10mil (0.254mm), 20mil (0.508mm), 30mil (0.762mm), 60mil (1.524mm) |
| PCB size: | ≤400mm X 500mm |
| Solder mask: | Green, Black, Blue, Yellow, Red etc. |
| Surface finish: | Bare copper, HASL, ENIG, Immersion Silver, Immersion tin, OSP, ENEPIG, Pure gold etc. |
For RO4350B PCBs, we can offer single-sided, double-sided, multi-layer, and hybrid boards.
The available thicknesses include standard options like 10 mils, 20 mils, 30 mils, and 60 mils, as well as non-standard thicknesses like 4 mils, 6.6 mils, 13.3 mils, and 16.6 mils.
The finished copper on the PCBs can be either 1oz or 2oz.
The maximum PCB size we can provide is 400mm by 500mm.
Additionally, we offer a range of solder mask colors, including green, black, red, and yellow etc.
For pads plating, we offer various options of bare copper, HASL, immersion gold, immersion silver, immersion tin, OSP, ENEPIG, pure gold and so on.
Applications
RO4350B PCBs have demonstrated remarkable success in various applications over the past decades. They have been widely utilized in high-power amplifiers, microwave power amplifiers, cellular base station antennas, and more.
Thank you. See you next time!
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Rogers RO4350B DK 3.48 the laminates are a proprietary blend of woven glass reinforced hydrocarbon/ceramics Images
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