Elevate your electric vehicle powertrain designs with the RO4350B 2.4mm 3oz ENIG 18-Layer Traction Inverter PCB from PCBSync. Engineered for the high-power, high-frequency demands of modern EV propulsion, this multilayer board combines the legendary electrical stability of Rogers RO4350B with a heavy-copper, high-density architecture designed for maximum efficiency.
Engineered for Next-Gen EV Performance
The traction inverter is the heart of an electric vehicle’s drivetrain, converting DC power from the battery into AC power for the motor. Our 18-layer stackup provides the sophisticated routing required for advanced gate drivers and control logic, while the 3oz heavy copper layers handle the massive current surges typical of rapid acceleration.
Key Technical Specifications
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Base Material: Rogers RO4350B (Hydrocarbon/Ceramic)
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Layer Count: 18 Layers (High-Density Interconnect)
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Board Thickness: 2.4mm for enhanced structural rigidity
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Copper Weight: 3oz (Inner/Outer) for superior thermal and current capacity
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Surface Finish: ENIG (Electroless Nickel Immersion Gold) for flat soldering pads and oxidation resistance
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Dielectric Constant (Dk): 3.48 ± 0.05 @ 10 GHz
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Dissipation Factor (Df): 0.0037 @ 10 GHz
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Z-Axis CTE: 32 ppm/°C (Excellent via reliability)
Why Choose RO4350B for Traction Inverters?
1. Superior Thermal Management
EV inverters generate significant heat. The 3oz copper weight in this PCB acts as an integrated heat sink, spreading thermal energy across the 18 layers. Coupled with the RO4350B’s thermal conductivity (0.69 W/m/K), this board maintains lower operating temperatures, extending the lifespan of your SiC (Silicon Carbide) or GaN (Gallium Nitride) MOSFETs.
2. High-Frequency Signal Integrity
With the industry shifting toward higher switching frequencies to reduce size and weight, signal integrity is paramount. RO4350B offers a stable Dk across a wide temperature and frequency range, minimizing parasitic inductance and ensuring precise switching timing for the motor controller.
3. Automotive-Grade Reliability
The 2.4mm thickness provides the mechanical strength needed to withstand the vibrations and mechanical shocks of automotive environments. Furthermore, the low Z-axis Coefficient of Thermal Expansion (CTE) ensures that the plated through-holes (vias) remain intact during the extreme thermal cycling experienced in a vehicle’s engine bay.
4. Advanced ENIG Surface Finish
The ENIG finish provides a perfectly flat surface for fine-pitch SMT components and high-power wire bonding. It offers excellent shelf life and ensures reliable electrical connections in the harsh, humid, and corrosive environments often found in automotive applications.
The PCBSync Advantage
At PCBSync, we specialize in the “hard stuff.” Manufacturing an 18-layer board with 3oz copper on a Rogers substrate requires precision-controlled lamination and etching processes. Our facility is equipped with state-of-the-art AOI (Automated Optical Inspection) and flying probe testing to ensure 100% netlist continuity and reliability.
Applications Include:
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EV/HEV Traction Inverters
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High-Voltage DC-DC Converters
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On-Board Chargers (OBC)
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High-Power Industrial Motor Drives
Optimize Your Powertrain Today
Don’t let your PCB be the bottleneck in your EV design. Upgrade to the PCBSync RO4350B 18-Layer Inverter PCB and experience the difference that premium materials and expert fabrication make.
Order your custom stackup or request a technical consultation from our engineering team.
