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
| Category | Specification |
|---|---|
| Base Material | RO4350B |
| Layer Count | 2-layer |
| Board Dimensions | 80 mm × 75 mm = 1PC, ±0.15 mm |
| Minimum Trace/Space | 4/4 mils |
| Minimum Hole Size | 0.3 mm |
| Via Type | Through-hole only (No Blind Vias) |
| Board Thickness | 1.6 mm |
| Copper Weight | 1 oz (1.4 mils) |
| Via Plating Thickness | 20 μm |
| Surface Finish | Immersion Gold (ENIG) |
| Top Silkscreen | White |
| Bottom Silkscreen | None |
| Top Solder Mask | None |
| Bottom Solder Mask | None |
| Quality Testing | 100% electrical test prior to shipment |
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
