RO4350B PCB: 2-Layer, 16.6mil Core, ENEPIG Finish
(All PCBs are custom-manufactured. Reference images and parameters
may vary based on your design requirements.)
Overview of the 2-Layer RO4350B PCB
The 2-layer RO4350B PCB is a high-performance, cost-effective
laminate designed for RF and microwave applications. Built with
Rogers RO4350B material, this PCB offers excellent dielectric
properties, low dissipation factor, and dimensional stability,
making it a popular choice for cellular base station antennas,
automotive radar, and satellite communication systems.
With a 16.6mil (0.422mm) core, ENEPIG (Electroless Nickel
Electroless Palladium Immersion Gold) surface finish, and green
solder mask, this PCB ensures low signal loss, reliable
performance, and easy manufacturability at a lower cost compared to
PTFE laminates.
PCB Construction Details
| Parameter | Specification |
| Base Material | Rogers RO4350B |
| Layer Count | 2 layers |
| Board Dimensions | 42.3mm x 30.8mm ± 0.15mm |
| Minimum Trace/Space | 4/5 mils |
| Minimum Hole Size | 0.3mm |
| Blind Vias | No |
| Finished Board Thickness | 0.5mm |
| Copper Weight | 1oz (1.4 mils) outer layers |
| Via Plating Thickness | 20 μm |
| Surface Finish | ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold) |
| Top Silkscreen | None |
| Bottom Silkscreen | None |
| Top Solder Mask | Green |
| Bottom Solder Mask | None |
| Electrical Testing | 100% tested prior to shipment |
PCB Stackup
The RO4350B PCB stackup is engineered for low dissipation factor
and stable dielectric properties. Below is the detailed stackup:
| Layer | Material | Thickness |
| Copper Layer 1 | Copper (1oz) | 35 μm |
| Core Material | Rogers RO4350B | 0.422mm (16.6mil) |
| Copper Layer 2 | Copper (1oz) | 35 μm |
PCB Statistics
The compact 2-layer RO4350B PCB is designed for efficient layouts.
Below are its key statistics:
- Components: 8
- Total Pads: 10
- Thru Hole Pads: 6
- Top SMT Pads: 4
- Bottom SMT Pads: 0
- Vias: 5
- Nets: 2
Introduction to RO4350B Material
Rogers RO4350B laminates combine woven glass-reinforced
hydrocarbon/ceramic materials for high-frequency performance and
cost-effective manufacturability. These laminates are easy to
process using standard FR-4 techniques, eliminating the need for
special handling required by PTFE-based materials.
Key advantages include:
- Tight control on dielectric constant (Dk): Ensures consistent
performance across applications.
- Low Z-axis CTE: Provides reliable plated through-hole (PTH) quality
under thermal shock conditions.
- High Tg: Stable dimensional expansion throughout the processing
temperature range.
Features of RO4350B
- Dielectric Constant (Dk): 3.48 ± 0.05 at 10GHz/23°C
- Dissipation Factor (Df): 0.0037 at 10GHz/23°C
- Thermal Conductivity: 0.69 W/m·K
- Coefficient of Thermal Expansion (CTE): X-axis: 10 ppm/°C, Y-axis:
12 ppm/°C, Z-axis: 32 ppm/°C
- Glass Transition Temperature (Tg): >280°C
- Moisture Absorption: 0.06%
- Flammability Rating: UL 94 V-0
Benefits of RO4350B PCB
- High-Frequency Performance: Low dissipation factor ensures minimal
signal loss.
- Easy Processing: Processes like FR-4 at a lower fabrication cost.
- Dimensional Stability: Excellent stability for multi-layer
constructions and thermal cycling.
- High Thermal Reliability: Low Z-axis CTE ensures reliable plated
through-holes.
- Cost-Effectiveness: Offers high performance at a fraction of the
cost of PTFE laminates.
- Tight Dk Tolerance: Ensures consistent RF performance.
Applications of RO4350B PCB
- Cellular Base Station Antennas
- Power Amplifiers
- RF Identification (RFID) Tags
- Automotive Radar and Sensors
- Satellite Communication (LNB)
Why Choose the 2-Layer RO4350B PCB?
The 2-layer RO4350B PCB is a reliable and cost-effective solution
for high-frequency circuit designs requiring low loss, thermal
stability, and consistent dielectric properties. Its 16.6mil core,
ENEPIG finish, and high thermal conductivity make it an excellent
choice for RF, microwave, and automotive radar applications.
Contact us today to learn more about this high-performance PCB or
to place your order!
