In medium-high voltage switching applications such as power adapters, motor drives, industrial controls, and inverter circuits, RENESAS's 2SK1157-E has been a widely adopted power MOSFET for its balanced performance. However, in the face of global supply chain uncertainties, prolonged lead times, and cost volatility, dependence on imported components like the 2SK1157-E increasingly poses risks to production stability and cost control. Driven by the urgent need for domestic substitution, VBsemi introduces the VBM15R08 N-channel power MOSFET—a fully compatible, performance-enhanced alternative designed to seamlessly replace the 2SK1157-E, offering superior supply chain security and cost efficiency without circuit modifications.
Comprehensive Parameter Enhancement, Delivering Higher Performance Margins.
As a direct domestic alternative to the 2SK1157-E, the VBM15R08 achieves meaningful upgrades in several key electrical parameters, providing stronger reliability and adaptability:
The drain-source voltage is raised to 500V, exceeding the original 450V by 50V, which offers greater overvoltage margin in applications with input voltage fluctuations or inductive switching surges.
The continuous drain current is increased to 8A, outperforming the 7A rating of the 2SK1157-E, enabling support for higher load currents and improved power handling capability.
Although the on-state resistance is 1100mΩ (@10V gate drive) compared to the 800mΩ of the 2SK1157-E, the VBM15R08 compensates with higher voltage and current ratings, making it suitable for applications where voltage ruggedness and current capacity are prioritized. The ±30V gate-source voltage rating ensures strong gate durability and noise immunity, while the 3.4V typical threshold voltage ensures reliable switching and easy drive compatibility with standard gate drivers.
Advanced Planar Technology, Ensuring High Reliability and Switching Robustness.
The VBM15R08 utilizes advanced Planar gate technology, delivering excellent switching performance and thermal stability. It undergoes rigorous avalanche energy testing and high-voltage screening, ensuring reliable operation under voltage transients and inductive switching conditions. The device is characterized by low gate charge and optimized internal capacitance, reducing switching losses and improving efficiency in high-frequency circuits. With an operating temperature range of -55°C to 150°C and validation through extended reliability tests, the VBM15R08 meets the demands of harsh environments including industrial, automotive, and outdoor applications.
Full Package Compatibility, Enabling Drop-In Replacement.
The VBM15R08 is offered in the industry-standard TO-220 package, which is fully compatible with the 2SK1157-E in footprint, pinout, and mounting dimensions. This allows engineers to replace the component directly on existing PCB layouts without redesigning circuits or heat sinks, significantly reducing substitution time and cost. Validation and sampling can be completed quickly, accelerating time-to-market for upgraded products.
Local Supply Chain Assurance, Stable Delivery and Responsive Support.
VBsemi's domestic manufacturing and streamlined logistics ensure short lead times—typically within 2 weeks—eliminating the uncertainties associated with international procurement. The company provides comprehensive technical support, including substitution guides, application notes, and circuit design assistance, with fast response times to resolve integration challenges. This local advantage reduces dependency on imported components and strengthens supply chain resilience.
From power supplies and motor drives to industrial inverters and lighting systems, the VBM15R08 serves as a reliable, high-performance alternative to the RENESAS 2SK1157-E. With its enhanced voltage and current ratings, robust technology, package compatibility, and secure local supply, it enables manufacturers to improve product reliability while reducing costs and supply chain risks. Choosing VBM15R08 is a strategic step toward supply chain independence, offering a worry-free substitution path with no redesign overhead.