* PCBs are custom-made, picture & parameters for reference
High-Performance 4-Layer HDI PCB Using RO4350B Material
(Custom PCBs are tailored products; the images and specifications provided are for reference only.)
Introduction to RO4350B
Rogers RO4350B is a proprietary woven glass reinforced hydrocarbon/ceramic material that offers electrical performance comparable to PTFE combined with the manufacturability of epoxy/glass. This material is designed for high-frequency applications, providing low dielectric loss and tight control over dielectric constant (Dk). Unlike traditional microwave laminates, RO4350B does not require special handling or treatments for through-holes, making it a cost-effective solution for RF designs.
Key Features of RO4350B
Dielectric Constant (Dk): 3.48 ± 0.05 at 10 GHz/23°C
Dissipation Factor: 0.0037 at 10 GHz/23°C
Thermal Conductivity: 0.69 W/m·K
CTE: X-axis: 10 ppm/°C, Y-axis: 12 ppm/°C, Z-axis: 32 ppm/°C
Tg: >280°C
Low Water Absorption: 0.06%
PCB Construction Details
| Parameter | Details |
|---|---|
| Base Material | RO4350B |
| Layer Count | 4 layers |
| Board Dimensions | Outline 1: 70 mm x 50 mm (1 PCS, ± 0.15 mm) |
| Outline 2: 70 mm x 40 mm | |
| Minimum Trace/Space | 4/7 mils |
| Minimum Hole Size | 0.3 mm |
| Stepped Outline | Yes |
| Finished Board Thickness | 0.5 mm |
| Finished Copper Weight | 1 oz (1.4 mils) for outer layers |
| Via Plating Thickness | 20 µm |
| Blind and Buried Vias | L1-L2, L1-L3, L2-L3 |
| Surface Finish | Immersion Gold |
| Top Silkscreen | No |
| Bottom Silkscreen | No |
| Top Solder Mask | No |
| Bottom Solder Mask | No |
| Electrical Testing | 100% before shipment |
PCB Stackup
| Layer | Details |
|---|---|
| Copper Layer 1 | 35 µm |
| Rogers RO4350B Core | 0.762 mm (30 mil) |
| Copper Layer 2 | 35 µm |
| Prepreg (RO4450F) | 0.102 mm (4 mil) |
| Copper Layer 3 | 35 µm |
| Rogers RO4350B Core | 0.762 mm (30 mil) |
| Copper Layer 4 | 35 µm |
PCB Statistics
Components: 9
Total Pads: 32
Thru Hole Pads: 17
Top SMT Pads: 15
Bottom SMT Pads: 0
Vias: 23
Nets: 4
Artwork and Standards
Type of Artwork Supplied: Gerber RS-274-X
Accepted Standard: IPC-Class-2
Availability: Worldwide
Benefits of RO4350B
Ideal for multi-layer board (MLB) constructions
Compatible with FR-4 processing at lower fabrication costs
Excellent dimensional stability
Competitively priced
Applications
Cellular Base Station Antennas and Power Amplifiers
RF Identification Tags
Automotive Radar and Sensors
LNBs for Direct Broadcast Satellites
Get a Quick Quote
Fill in the form below and our engineers will reply within 24 hours with technical specifications and pricing for 4-Layer RO4350B HDI PCB.
