In high-voltage, high-frequency application scenarios such as switch-mode power supplies, industrial inverters, LED lighting drivers, welding machines, and UPS systems, TOSHIBA's TK9A65W,S5X, with its robust performance and reliability, has been a preferred choice for engineers globally. However, in the post-pandemic era marked by global supply chain disruptions and trade uncertainties, this imported component faces significant challenges: prolonged lead times (often extending to several months), cost volatility due to exchange rate fluctuations, and delayed technical support. These issues critically impact production schedules and cost control for downstream enterprises. Against this backdrop, domestic substitution has evolved from an "option" to a "necessity," serving as a vital strategy for ensuring supply chain security, reducing costs, and enhancing core competitiveness.
Leveraging years of expertise in power semiconductors, VBsemi introduces the VBMB165R09S N-channel power MOSFET, developed through independent R&D. This product is precisely aligned as a direct alternative to the TK9A65W,S5X, offering key advantages in parameter compatibility, technological advancement, and full package compatibility. It enables seamless replacement without circuit modifications, delivering a stable, cost-effective, and locally supported solution for high-voltage electronic systems.
Comprehensive Parameter Alignment with Enhanced Technological Edge, Ensuring Robust Performance.
Designed as a domestic alternative to the TK9A65W,S5X, the VBMB165R09S delivers comparable and optimized electrical parameters, providing reliable performance for demanding applications:
Firstly, the drain-source voltage is maintained at 650V, matching the original model, which ensures sufficient robustness against grid fluctuations and transient overvoltages in industrial environments.
Secondly, the continuous drain current is rated at 9A, slightly below the original model's 9.3A but with ample margin for most high-power designs. This allows for stable operation in circuits requiring high current-carrying capacity, such as power supplies and motor drives.
Thirdly, the on-state resistance is 550mΩ (@10V gate drive), which is slightly higher than the TK9A65W,S5X's 500mΩ but optimized through advanced SJ_Multi-EPI technology to minimize conduction losses. This contributes to improved efficiency and reduced heat generation, particularly in high-frequency switching applications.
Additionally, the VBMB165R09S supports a ±30V gate-source voltage, offering superior gate ESD protection and noise immunity, preventing unintended turn-on in complex electromagnetic environments. The 3.5V gate threshold voltage ensures compatibility with mainstream driver ICs, simplifying drive circuit design and lowering substitution barriers.
Advanced SJ_Multi-EPI Technology, Elevating Reliability and Stability.
The TK9A65W,S5X is known for its low on-resistance and high durability. The VBMB165R09S employs state-of-the-art SJ_Multi-EPI (Multi-Epitaxial) technology, which enhances device performance and reliability. This technology optimizes switching characteristics and improves dv/dt tolerance, ensuring stable operation under high-frequency switching and fast transient conditions. The device undergoes rigorous 100% avalanche testing and high-voltage screening, delivering excellent single-pulse avalanche energy handling to mitigate risks from energy surges during turn-off. With an extended operating temperature range of -55°C to 150°C, it withstands harsh industrial environments and extreme climates. Reliability is further validated through 1000-hour high-temperature/high-humidity (85°C/85% RH) aging tests, resulting in a failure rate well below industry averages. This makes it ideal for critical applications requiring high reliability, such as medical equipment, industrial controls, and emergency power systems.
Fully Compatible Package, Enabling "Plug-and-Play" Replacement.
A major concern in domestic substitution is the cost and effort of redesign. The VBMB165R09S addresses this seamlessly with its package design. It uses a TO-220F package, identical to the TK9A65W,S5X's TO-220F in pinout, pin spacing, dimensions, and heatsink structure. Engineers can directly replace the component without modifying PCB layouts or thermal designs, achieving "plug-and-play" convenience. This compatibility drastically reduces verification time—sample validation can typically be completed within 1-2 days—and avoids additional costs from PCB revisions or mold adjustments. It also preserves original product certifications and外观 designs, accelerating supply chain integration and helping enterprises swiftly adopt domestic alternatives.
Local Strength Assurance, Dual Peace of Mind for Supply Chain and Support.
Unlike imported components hampered by international logistics, trade policies, and currency fluctuations, VBsemi leverages China's mature semiconductor ecosystem. With modern production bases and R&D centers in Jiangsu, Guangdong, and other regions, VBsemi ensures full-process control and stable mass production of the VBMB165R09S. Lead times are compressed to under 2 weeks standard, with expedited orders enabling 72-hour delivery. This mitigates risks from supply chain volatility, tariffs, and geopolitics, ensuring uninterrupted production. As a local brand, VBsemi provides dedicated technical support with "one-on-one" services: comprehensive documentation including substitution verification reports, datasheets, thermal design guides, and application circuit references. The technical team responds within 24 hours to resolve any substitution issues, offering on-site or remote assistance. This eliminates the slow response and high communication costs associated with imported components, making substitution smooth and worry-free.
From industrial power supplies and high-frequency inverters to LED drivers and welding machines; from UPS systems and emergency power to motor drives and new energy charging equipment, the VBMB165R09S stands out with its "parameter compatibility, advanced technology, package compatibility,可控 supply, and responsive service." It has become the preferred domestic alternative to the TK9A65W,S5X, already adopted by leading companies across industries and receiving strong market recognition. Choosing the VBMB165R09S is not merely a component swap—it is a strategic move to upgrade supply chain security, optimize costs, and boost product competitiveness, offering superior reliability, stable supply, and accessible support without R&D modification risks.