In medium-voltage power applications such as switch-mode power supplies, motor drives, industrial controls, and lighting systems, RENESAS's 2SK3455B-S17-AY, with its robust performance and stable characteristics, has been a trusted choice for engineers globally. However, in the post-pandemic era, reliance on imported components like this has revealed persistent challenges: prolonged lead times (often extending to several months), cost volatility due to exchange rate fluctuations, and delayed technical support. These issues disrupt production schedules and increase operational costs for downstream enterprises. Consequently, domestic substitution has evolved from an alternative to a necessity, offering a strategic path to enhance supply chain resilience, reduce costs, and boost competitive advantage.
Leveraging deep expertise in power semiconductors, VBsemi introduces the VBMB15R13 N-channel MOSFET, a domestically developed alternative designed to directly replace the 2SK3455B-S17-AY. With core strengths in parameter matching, technological parity, and full package compatibility, this product enables seamless substitution without circuit modifications, delivering a stable, cost-efficient, and locally supported solution for various medium-voltage electronic systems.
Precise Parameter Matching with Enhanced Current Capability, Ensuring Robust Performance.
Tailored as a domestic alternative to the 2SK3455B-S17-AY, the VBMB15R13 offers key electrical parameters that meet or exceed the original, providing reliable performance for demanding applications:
First, the drain-source voltage is maintained at 500V, fully matching the original model's rating, ensuring suitability for standard medium-voltage environments without compromise.
Second, the continuous drain current is increased to 13A, surpassing the original model's 12A—an 8.3% improvement in current-carrying capacity. This enhancement allows for handling higher power loads or improving system stability in existing designs, supporting upgrades to more demanding applications.
Third, the on-state resistance is specified at 800mΩ (@10V gate drive), which, while slightly higher than the original's 600mΩ (measured at 6A), is optimized through advanced planar technology to minimize conduction losses in typical operating conditions. This ensures efficient power handling and reduced thermal stress, contributing to overall system reliability.
Additionally, the VBMB15R13 supports a ±30V gate-source voltage, offering superior gate ESD protection and noise immunity, preventing false triggering in noisy environments. The 3.55V gate threshold voltage balances ease of drive with switching stability, compatible with mainstream driver ICs without circuit adjustments, simplifying the substitution process.
Advanced Planar Gate Technology for Inherited Reliability and Stability.
The 2SK3455B-S17-AY is known for its reliable performance in medium-voltage circuits. The VBMB15R13 employs industry-leading Planar gate technology, building on this foundation while enhancing device robustness. It undergoes rigorous pre-screening, including 100% avalanche testing, to ensure excellent single-pulse avalanche energy tolerance, reducing the risk of failure during voltage transients. Through optimized intrinsic capacitance design, switching losses are minimized, and dv/dt tolerance is maintained at high levels, matching the application scenarios of the original model. The device operates over an extended temperature range of -55°C to 150°C, adapting to harsh industrial environments and outdoor conditions. With validation from long-term reliability tests, such as high-temperature/high-humidity aging, its failure rate is kept well below industry averages, making it suitable for critical applications like industrial automation, power supplies, and motor controls.
Fully Compatible Package, Enabling Effortless and Risk-Free Replacement.
A major concern in domestic substitution is the cost and effort of redesign. The VBMB15R13 addresses this through its package design. It uses a TO-220F package identical to the 2SK3455B-S17-AY in pinout, pin spacing, dimensions, and heatsink structure. Engineers can perform a direct "plug-and-play" replacement without altering PCB layouts or thermal management systems. This compatibility slashes substitution time—sample validation typically completes within 1-2 days—and avoids additional expenses from PCB revisions or retooling. By preserving original form factors, it eliminates the need for re-certification, accelerating the supply chain transition and helping enterprises quickly adopt domestic components.
Local Strength Assurance, Dual Peace of Mind for Supply Chain and Support.
Unlike imported parts affected by global logistics, trade policies, and currency risks, VBsemi leverages China's integrated semiconductor ecosystem, with modern production bases in Jiangsu and Guangdong ensuring full-process R&D and stable mass production. The VBMB15R13 features a standard lead time of under 2 weeks, with expedited options for 72-hour delivery, mitigating supply chain disruptions and geopolitical uncertainties. As a local brand, VBsemi provides dedicated technical support, including comprehensive documentation (substitution reports, datasheets, thermal guides, and application circuits) and "one-on-one" customized assistance. Technical queries are addressed within 24 hours, offering on-site or remote solutions, thereby eliminating the slow response and high communication costs associated with imported components.
From industrial power supplies and motor drives to lighting systems and control circuits, the VBMB15R13 stands out as the preferred domestic alternative to the 2SK3455B-S17-AY, thanks to its "parameter matching, enhanced current, package compatibility, supply chain control, and responsive service." It has already gained traction in leading companies across various sectors, earning market approval. Choosing the VBMB15R13 is not just a component swap—it's a strategic move to secure supply chains, optimize costs, and enhance product competitiveness, offering superior performance, stable supply, and local support without R&D overhead.