Rogers RO4350B 2-Layer 1.524mm Immersion Silver PCB for RF Applications
1.Introduction of RO4350B
Rogers RO4350B materials are proprietary woven glass reinforced hydrocarbon/ceramics with electrical performance close to PTFE/woven glass and the manufacturability of epoxy/ glass.
RO4350B laminates provide tight control on dielectric constant (Dk) and maintain low loss while utilizing the same processing method as standard epoxy/glass. Available at a fraction of the cost of conventional microwave laminates, RO4350B laminates do not require the special through-hole treatments or handling procedures as PTFE based materials. These materials are UL 94 V-0 rated for active devices and high power RF designs.
2.Key Features (RO4350B)
Stable Dielectric Constant: 3.48 ±0.05 at 10GHz/23°C
Low Loss Performance: Dissipation Factor of 0.0037 at 10GHz/23°C
Temperature Stability: Thermal Coefficient of DK +50 ppm/°C ranging -50°C to 150°C
Thermal Management: Thermal Conductivity of 0.69 W/m/°K
Dimensional Stability: X axis CTE 10 ppm/°C, Y CTE 12 ppm/°C, Z CTE 32 ppm/°C
High Temperature Resistance: High Tg value of >280°C
Environmental Durability: Low water absorption of 0.06%
Safety Certified: UL 94-V0 Flammability
3.PCB Construction Details
| Parameter | Specification |
|---|---|
| Base Material | RO4350B |
| Layer Count | 2-layer |
| Board Dimensions | 54mm × 68mm = 1PC, ±0.15mm |
| Minimum Trace/Space | 4/6 mils |
| Minimum Hole Size | 0.3mm |
| Blind Vias | No |
| Finished Board Thickness | 1.6mm |
| Finished Cu Weight | 1oz (1.4 mils) |
| Via Plating Thickness | 20 μm |
| Surface Finish | Immersion Silver |
| Top Silkscreen | White |
| Bottom Silkscreen | No |
| Top Solder Mask | Blue |
| Bottom Solder Mask | No |
| Electrical Test | 100% tested 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: 27
Total Pads: 108
Thru Hole Pads: 72
Top SMT Pads: 36
Bottom SMT Pads: 0
Vias: 101
Nets: 2
6.Typical Applications
Cellular Base Station Antennas and Power Amplifiers
RF Identification Tags
Automotive Radar and Sensors
LNB's for Direct Broadcast Satellites
7.Quality Assurance
Artwork Format: Gerber RS-274-X
Quality Standard: IPC-Class-2
Availability: Worldwide
