In high-performance switching power applications including Power Factor Correction (PFC), server/telecom power supplies, FPD TV power supplies, ATX power supplies, and industrial power systems, onsemi's FCH110N65F-F155 SuperFET® II MOSFET has been a benchmark for designers. Leveraging advanced superjunction (SJ) technology and charge balance techniques, it offers low on-resistance, superior switching performance, and high avalanche energy. However, in today's global landscape marked by supply chain volatility and extended lead times for imported components, reliance on such parts introduces significant risks—procurement delays, cost unpredictability, and logistical uncertainties. This environment has accelerated the shift toward domestic substitution from a strategic consideration to an operational imperative for ensuring supply chain resilience, cost control, and project timelines.
Responding to this critical market need, VBsemi introduces the VBP165R36S—a high-performance N-channel superjunction MOSFET developed through independent innovation. This device is meticulously designed as a direct, pin-to-pin replacement for the FCH110N65F-F155, delivering not only parameter-to-parameter compatibility but also measurable performance enhancements, full package interchangeability, and the reliability of a localized supply chain. It enables engineers to seamlessly upgrade their designs with a higher-performance, more accessible solution.
Performance Excellence: Key Parameters Surpassed for Demanding Applications
Engineered as a premium domestic alternative, the VBP165R36S achieves significant improvements across core electrical specifications, providing greater design headroom and enhanced system reliability:
1. Higher Current Handling: The continuous drain current (Id) is rated at 36A, exceeding the original's 35A. This increase in current-carrying capacity supports more robust power stages, facilitates potential power density upgrades, and improves operational stability under high-load conditions.
2. Lower Conduction Losses: The VBP165R36S features a remarkably low on-resistance (RDS(on)) of just 75mΩ (max @10V Vgs), a substantial 31.8% improvement over the FCH110N65F-F155's 110mΩ. This reduction directly translates to higher system efficiency, lower power dissipation, and reduced thermal stress—critical factors for high-efficiency power supplies and thermal management.
3. Robust Voltage Ratings: It maintains the same 650V drain-source voltage (Vdss) rating, ensuring full compatibility in high-voltage bus applications. The gate-source voltage (Vgs) is rated at ±30V, offering strong noise immunity and robustness against gate voltage spikes.
4. Optimized Switching Characteristics: With a standard 3.5V gate threshold voltage (Vth), the device ensures easy drive compatibility with mainstream controller ICs. The advanced superjunction multi-epitaxial (SJ_Multi-EPI) technology platform underpinning the VBP165R36S is engineered to deliver an excellent figure-of-merit (FOM), balancing low gate charge with low RDS(on) for efficient high-frequency switching.
Advanced SJ_Multi-EPI Technology: Delivering Reliability and Switching Performance
The FCH110N65F-F155 derives its strengths from onsemi's SuperFET II technology. The VBP165R36S harnesses VBsemi's proprietary SJ_Multi-EPI (Superjunction Multi-Epitaxial) process technology. This advanced platform achieves the crucial charge balance necessary for superior high-voltage performance, resulting in:
Minimized Switching Losses: Optimized internal capacitance and gate charge characteristics ensure fast switching transitions and reduced losses during turn-on and turn-off.
Enhanced Robustness: The device is designed for high dv/dt capability and strong avalanche energy endurance, ensuring reliable operation in demanding environments with inductive loads and voltage transients.
Exceptional Body Diode Characteristics: The technology provides improved reverse recovery performance of the intrinsic body diode, contributing to higher system reliability and reduced stress in hard-switching or bridged topologies.
Fully validated across an operating junction temperature range from -55°C to 150°C, and subjected to rigorous reliability testing (including HTGB, HTRB, and temperature cycling), the VBP165R36S is built to meet the stringent demands of industrial and commercial applications.
Seamless Replacement: TO-247 Package Compatibility Enables Drop-In Upgrade
A primary concern in component substitution is the engineering effort required for integration. The VBP165R36S eliminates this hurdle through complete mechanical and footprint compatibility. It is offered in the industry-standard TO-247 package, identical in pinout (G-D-S), physical dimensions, and mounting hole placement to the FCH110N65F-F155. This allows for a true "drop-in" replacement on existing PCB layouts without any modifications to the board, heatsink, or mechanical design. The benefits are immediate:
Zero Redesign Cost: Eliminates need for PCB respins or circuit re-simulation.
Accelerated Validation: Qualification and testing cycles are drastically shortened, often to just a few days.
Simplified Logistics: Enables dual sourcing with minimal inventory and process changes.
Localized Supply Chain Assurance and Expert Technical Support
Beyond component performance, VBsemi provides decisive advantages in supply chain stability and responsiveness. Unlike the extended and uncertain lead times often associated with imported brands, VBsemi's domestic manufacturing capability ensures reliable supply with significantly shorter lead times, typically within 2-4 weeks, mitigating risks related to global logistics and trade policies.
Furthermore, as a local partner, VBsemi offers dedicated, responsive technical support. Engineers have direct access to comprehensive documentation—including detailed datasheets, application notes, and SPICE models—as well as prompt assistance from a local FAE team for design-in support, troubleshooting, and optimization advice tailored to specific application needs.
Conclusion: The Strategic Choice for Performance and Supply Chain Security
From high-efficiency server PFC stages and industrial power supplies to advanced lighting and motor drive systems, the VBP165R36S stands as the intelligent alternative to the onsemi FCH110N65F-F155. It combines superior electrical parameters (lower RDS(on), higher Id), proven reliability through advanced SJ_Multi-EPI technology, effortless drop-in compatibility, and the security of a localized supply chain.
Choosing the VBP165R36S is more than a component swap; it is a strategic upgrade that enhances product performance, secures your production line, and provides the peace of mind that comes with local expertise and dependable supply.