In high-current switching and power management applications such as motor drives, DC-DC converters, power tools, and battery management systems, the RENESAS 2SK3431-AZ N-channel MOSFET has been widely adopted for its balanced performance. However, facing challenges like extended international lead times, cost volatility, and logistical uncertainties, the need for a reliable, high-performance domestic alternative has become urgent. Addressing this critical industry demand, VBsemi introduces the VBM1405, a direct and enhanced replacement for the 2SK3431-AZ, engineered to deliver superior current handling, robust reliability, and full package compatibility—ensuring a seamless, risk-free substitution while strengthening supply chain resilience.
Enhanced Parameters for Demanding High-Current Performance
Designed as a pin-to-pin upgrade to the 2SK3431-AZ, the VBM1405 offers significant improvements in key specifications, providing greater design margin and operational stability:
- Continuous Drain Current (Id): Rated at 110A, a substantial 32.5% increase over the original 83A. This enhanced current capability supports higher power throughput and improves reliability in demanding applications.
- Drain-Source Voltage (Vdss): Maintains 40V, ensuring full compatibility with existing circuit voltage requirements.
- On-State Resistance (RDS(on)): Features a low 6mΩ (at Vgs=10V), offering excellent conduction loss comparable to the original 5.6mΩ, while the higher current rating provides overall system efficiency gains.
- Gate Threshold Voltage (Vth): Optimized at 2.5V with a ±20V gate-source voltage range, ensuring robust noise immunity and easy drive compatibility with standard controller ICs.
Advanced Trench Technology for Improved Efficiency and Reliability
The VBM1405 utilizes advanced Trench MOSFET technology, which delivers low on-resistance, reduced switching losses, and enhanced thermal performance. This technology ensures high efficiency and reliability in high-frequency switching applications. The device is fully characterized for avalanche energy rating and offers excellent dv/dt capability, making it suitable for rugged environments including motor control and high-current power supplies. With an operational temperature range from -55°C to 175°C, it meets the requirements of industrial, automotive, and consumer applications.
Full Package Compatibility for Drop-In Replacement
The VBM1405 is offered in the industry-standard TO-220 package, which is mechanically and electrically identical to the 2SK3431-AZ. This complete pin-to-pin and footprint compatibility allows engineers to replace the existing component without any PCB layout modifications, thermal redesign, or additional testing. The substitution process is thereby simplified, reducing time-to-market and eliminating re-qualification costs.
Stable Supply Chain and Local Technical Support
VBsemi’s domestic manufacturing capability guarantees consistent supply with short lead times, typically within 2–3 weeks, and flexible support for urgent orders. This eliminates dependencies on international logistics and currency fluctuations. Additionally, VBsemi provides comprehensive technical support, including detailed datasheets, application notes, and substitution validation reports. Our engineering team offers rapid, localized assistance to ensure smooth integration and optimal performance in your design.
From motor drives and power supplies to battery protection circuits and high-current switches, the VBM1405 stands out as the ideal domestic alternative to the RENESAS 2SK3431-AZ. It combines higher current capability, proven reliability, and hassle-free replacement—enabling customers to enhance product performance while securing their supply chain and reducing total cost. Choose VBM1405 for a smarter, safer, and more sustainable power solution.