In today’s ultra-connected world of 5G, IoT and automotive radar systems, achieving signal integrity and low loss in PCB designs has never been more critical. That’s why a two-layer Rogers ENIG PCB built on premium laminate materials is no longer a luxury—it’s a necessity. At HH Circuits, our 2-layer Rogers ENIG PCB delivers the performance your high-frequency design demands.
What Is a 2-Layer Rogers ENIG PCB?
A 2-layer Rogers ENIG PCB uses Rogers RO4000-series laminates, a high-frequency substrate developed by Rogers Corporation, to replace conventional FR-4 materials.
These laminates are composed of ceramic-filled hydrocarbon with a dielectric constant (Dk) of about 3.48, providing outstanding electrical stability across a wide frequency range.
The ENIG surface finish enhances solderability, corrosion resistance, and contact reliability, making it ideal for advanced RF, microwave, and 5G applications.
Why Choose Rogers RO4350B Material?
Compared to FR-4, rogers 4350b pcb offers:
Low Dielectric Loss (Df ≈ 0.0037) — reduces signal attenuation in GHz ranges.
Stable Dielectric Constant (Dk ≈ 3.48) — maintains tight impedance tolerance.
Excellent Thermal Management — supports stable performance under reflow or high-temperature operation.
Low Moisture Absorption (< 0.06%) — ensures consistent performance even in humid environments.
Dimensional Stability — with low coefficient of thermal expansion (CTE).
Key Advantage: RO4350B’s ceramic-filled hydrocarbon composition provides optimal balance of:
- Cost (40% cheaper than pure PTFE)
- Machinability (compatible with FR4 lamination processes)
- Temperature stability (±50ppm/°C from -50°C to +150°C)
HHCircuits’ Precision Fabrication Process
1. Laser Direct Imaging (LDI)
- 15µm trace/spacing accuracy for mmWave designs
- Eliminates phototool alignment errors
2. Plasma Etching
- ±2% dielectric thickness control
- Prevents resin smear in microvias
3. ENIG Surface Finish
- Ni 3-5µm/Au 0.05-0.1µm thickness
- Wire bondable for RF IC attachments
Storage Tip: Rogers laminates maintain performance when stored at 18-30°C/50% RH – no shelf-life degradation.
Design Guidelines for Optimal Performance
Critical DFM Checks
- Copper roughness: ≤1µm RMS for minimal skin effect losses
- Via spacing: ≥3X dielectric thickness to prevent coupling
- Corner chamfering: 45° bends reduce reflections
Applications Where RO4350B Excels
1. 5G Massive MIMO Antennas
- 64T64R antenna arrays require ultra-low loss (<0.004 @28GHz)
- Our boards enable 256-QAM modulation with EVM <-35dB
2. Automotive Radar PCBs
- 77GHz ACC systems demand Dk stability across -40°C to +125°C
- HHCircuits’ process achieves 0.02dB/inch loss @76-81GHz
3. Satellite Phased Arrays
- Beamforming networks benefit from εr tolerance <±0.05
- Gold wire bonding compatibility simplifies RFIC integration
Why Partner with HH Circuits?
- Top pcb board manufacturer China Brand with 20 + Years Experience
Global Clients in 20 + Countries
Dedicated Rogers PCB Production Line
Quick Turnaround & On-Time Delivery
Comprehensive Testing: Flying Probe, AOI, and Impedance Verification
Expert DFM Support for Complex RF Designs
HH Circuits is not just a PCB supplier — we are your engineering partner for next-generation high-frequency solutions.
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