For (impedance-controlled) high-frequency PCBs, Multi-CB offers Rogers 4350B material with improved dielectric properties. Rogers-4000 materials are based on ceramics, are more homogeneous in the material mix and thus more reliable in terms of signal integrity (e.g. significantly lower loss factor, tan d).
A hybrid layer buildup of Rogers 4350B and FR4 material combines several advantages. The critical layers are built up with a high-tech Rogers core and then pressed with common FR4 prepreg.
Your advantages with hybrid buildup:
- Optimised low loss material properties in the high-frequency layers
- Lower price due to material mix
- Time saving, due to high material availability
- Fixed distance from outer- to reference-layer thanks to thickness-stable Rogers cores
- Defined layer structure with impedance examples
- Improved adhesion between the layers, thanks to higher resin content in FR4 prepreg (cf. Rogers/Rogers construction)
- Greatly improved mechanical stability compared to a plain Rogers buildup
- High reliability of the PCBs due to high-quality, process-safe and proven buildups
Defined hybrid layer buildup Rogers 4350B/FR4
Use our impedance layout examples to approximate your desired impedance values.
4 layers: 4L-H01 Hybrid Rogers 4350B - 168µm core / FR4 (1.55mm)
4 layers: 4L-H02 Hybrid Rogers 4350B - 254µm core / FR4 (1.55mm)
* Prepreg thicknesses after pressing, at approx. 80% copper utilization on the inner layers.
The defined layer buildup does not yet include impedance control! Impedance control comes with an extra charge in the PCB calculator.
Custom layer buildup
The custom layer buildup is special production. You can choose from the following cores and prepregs for a Rogers only layer construction.
For hybrid buildups or FR4-only multilayers, you find here: Our available prepregs and cores for FR4 material
Rogers prepregs
We have the following Rogers prepregs in stock:
| Type | Typical thickness | After pressing* |
|---|---|---|
| RO4450F | approx. 100µm | approx. 100µm |
Rogers cores
We have the following Rogers cores in stock:
| Type | Typical thickness | Copper thickness |
|---|---|---|
| RO4350B | 168µm | 18µm/18µm; 35µm/35µm |
| RO4350B | 254µm | 18µm/18µm; 35µm/35µm |
| RO4350B | 508µm | 18µm/18µm; 35µm/35µm |
| RO4350B | 1524µm | 18µm/18µm; 35µm/35µm |
The following Rogers cores are partially in stock, or are available for order:
| Type | Typical thickness | Copper thickness |
|---|---|---|
| RO4350B | 101µm | 18µm/18µm; |
| RO4350B | 338µm | 18µm/18µm; 35µm/35µm |
| RO4350B | 762µm | 18µm/18µm; 35µm/35µm |
For high-frequency applications, you can also use our range of other PCB materials, such as Panasonic Megtron6. Contact us, we will be happy to advise you!