In power conversion systems, motor drives, and high-current switching applications, ROHM's RSJ650N10TL N-channel MOSFET has been valued for its performance. However, global supply chain uncertainties and extended lead times pose significant challenges for production stability and cost control. In this context, domestic alternatives have evolved from an option to a necessity. Leveraging its expertise in power semiconductors, VBsemi introduces the VBL1105, a high-performance N-channel MOSFET designed as a direct, pin-to-pin replacement for the RSJ650N10TL. It offers enhanced parameters, full package compatibility, and reliable local supply, delivering a superior and secure solution for demanding applications.
Comprehensive Parameter Advancement, Delivering Higher Power Density and Efficiency.
Tailored to replace the RSJ650N10TL, the VBL1105 achieves significant upgrades in key electrical specifications, providing stronger performance and greater design margin:
The continuous drain current (Id) is dramatically increased to 140A, more than doubling the original 65A. This substantial enhancement in current-carrying capability supports higher power throughput and improves system robustness under heavy loads.
The on-state resistance (RDS(on)) is reduced to an ultra-low 4mΩ (at Vgs=10V), a major improvement over the 9.1mΩ of the RSJ650N10TL. This drastic reduction in conduction loss directly translates to higher system efficiency, lower heat generation, and reduced thermal management requirements.
The device maintains a drain-source voltage (VDS) of 100V, matching the original rating, and features a gate threshold voltage (Vth) of 3V for easy drive compatibility. The ±20V gate-source voltage rating offers robust protection against voltage spikes and noise in demanding environments.
Advanced Trench Technology for Enhanced Reliability and Switching Performance.
The VBL1105 utilizes advanced Trench technology, which optimizes cell density to achieve an excellent balance of low RDS(on) and switching performance. This technology ensures low gate charge and favorable dynamic characteristics, contributing to reduced switching losses in high-frequency applications. The device is designed for high reliability, capable of operating over a wide temperature range and suitable for industrial-grade applications. Its robust construction ensures stable operation under conditions such as high-current switching and transient loads, making it a dependable upgrade over the original model.
Full Package Compatibility for Seamless, Risk-Free Replacement.
A primary concern in component substitution is redesign effort. The VBL1105 addresses this seamlessly by adopting the industry-standard TO-263 package, which is fully compatible with the RSJ650N10TL in pinout, footprint, and mounting dimensions. Engineers can implement a direct "drop-in" replacement without modifying the existing PCB layout or thermal design. This eliminates time-consuming redesign, verification cycles, and additional certification costs, allowing for rapid product integration and significantly shortening time-to-market.
Local Supply Chain Assurance with Proactive Technical Support.
Compared to the volatile international supply chain, VBsemi provides stable, localized manufacturing and supply for the VBL1105. Lead times are shortened and predictable, shielding customers from geopolitical, logistical, and tariff-related disruptions. Backed by a local technical support team, VBsemi offers comprehensive documentation, including detailed substitution guides, application notes, and thermal design recommendations. Responsive, "one-to-one" engineering support is available to quickly resolve any application challenges, ensuring a smooth and successful transition.
From server and telecom power supplies to industrial motor drives, from uninterruptible power systems (UPS) to high-current DC-DC converters, the VBL1105 stands out as the preferred domestic alternative to the ROHM RSJ650N10TL. Its core advantages of "higher current rating, significantly lower resistance, perfect package compatibility, and secured local supply" provide a compelling value proposition. Choosing the VBL1105 is more than a component swap; it is a strategic move toward supply chain resilience, improved product performance, and enhanced market competitiveness.