RO4350B 2-Layer 1.524mm ENIG PCB for Automotive Radar and Base Station

1. Introduction

Rogers RO4350B materials are proprietary woven glass reinforced hydrocarbon/ceramic laminates that offer electrical performance comparable to PTFE/woven glass, along with the manufacturability of epoxy/glass. RO4350B laminates provide tight control over dielectric constant (Dk) and maintain low loss, all while using the same processing methods as standard epoxy/glass materials. Available at a fraction of the cost of conventional microwave laminates, RO4350B does not require special through-hole treatments or handling procedures like PTFE-based materials. These laminates are UL 94 V-0 rated, making them suitable for active devices and high-power RF designs.

2. Key Features & Benefits

Stable Dielectric Constant: 3.48 ±0.05 at 10 GHz/23°C
Low Loss Characteristics: Dissipation Factor of 0.0037 at 10 GHz/23°C
Excellent Thermal Performance: Thermal Conductivity of 0.69 W/m/K
Consistent Electrical Properties: Thermal Coefficient of Dk +50 ppm/°C (-50°C to 150°C)
Dimensional Stability: CTE X: 10 ppm/°C, Y: 12 ppm/°C, Z: 32 ppm/°C
High Temperature Resistance: Tg >280°C
Moisture Resistance: Low water absorption of 0.06%
Safety Certified: UL 94-V0 Flammability Rating
Cost-Effective RF Solution: Comparable performance to PTFE at lower cost

3. PCB Construction Details

4. PCB Stackup (2-Layer Rigid Structure)

Copper_layer_1 - 35 μm
Rogers RO4350B Core - 1.524 mm (60mil)
Copper_layer_2 - 35 μm

5. PCB Statistics:

Components: 41
Total Pads: 88
Thru Hole Pads: 61
Top SMT Pads: 27
Bottom SMT Pads: 0
Vias: 97
Nets: 2

6. Typical Applications

Cellular Base Station Antennas and Power Amplifiers
RF Identification Tags
Automotive Radar and Sensors
LNBs for Direct Broadcast Satellites

7. Quality Assurance

Artwork Format: Gerber RS-274-X
Accepted Standard: IPC-Class-2
Availability: Worldwide