In various high-current, high-efficiency application scenarios such as DC-DC converters, switching regulators, power management systems, and server power supplies, Toshiba's TPH1R403NL1,LQ(M, with its high-speed switching capability, low gate charge, and ultra-low on-resistance, has long been a key choice for engineers worldwide during design selection. However, against the backdrop of global supply chain uncertainties and trade volatility, this imported component has gradually exposed pain points: extended lead times, cost fluctuations due to currency exchange, and delayed technical support. These issues challenge production schedules and cost control for downstream companies. Given this demand, domestic substitution has evolved from an "option" to a "necessity," becoming a critical path for enterprises to ensure supply chain security and enhance competitiveness.
VBsemi, leveraging its expertise in power semiconductors, introduces the VBQA1301 N-channel MOSFET based on independent R&D. This product precisely aligns with the TPH1R403NL1,LQ(M, offering core advantages of parameter equivalence, technological advancement, and full package compatibility. It serves as a direct drop-in replacement without circuit modifications, providing a stable, cost-effective, and locally supported solution for high-current electronic systems.
Comprehensive Parameter Match with Enhanced Features, Ensuring Robust Performance.
Designed as a domestic alternative to the TPH1R403NL1,LQ(M, the VBQA1301 delivers comparable or improved electrical parameters, guaranteeing reliability in high-current applications:
First, the drain-source voltage is maintained at 30V, matching the original model, ensuring suitability for low-voltage, high-current environments like DC-DC conversion and battery management.
Second, the continuous drain current is 128A, slightly lower than the original 150A but still ample for most high-power designs, with optimized thermal performance to sustain stable operation under heavy loads.
Third, the on-state resistance is as low as 1.2mΩ (@10V gate drive), identical to the TPH1R403NL1,LQ(M's 1.2mΩ. This minimizes conduction losses, boosting overall efficiency and reducing heat generation in high-frequency switching applications.
Additionally, the VBQA1301 supports a ±20V gate-source voltage, offering robust ESD and noise immunity to prevent false triggering in noisy environments. The gate threshold voltage of 1.7V ensures compatibility with mainstream driver ICs, simplifying drive circuit design and lowering substitution barriers. Key characteristics like low gate charge (QSW) and low output charge (QSS) are optimized for fast switching, reducing switching losses and enhancing response speed in regulators and converters.
Advanced Trench Technology, Delivering Superior Reliability and Switching Performance.
The TPH1R403NL1,LQ(M excels with high-speed switching and low charge features. The VBQA1301 employs advanced Trench technology, refining device reliability and switching efficiency. It undergoes rigorous testing, including avalanche energy and high-temperature screening, to handle surge currents and transient events in demanding applications. Through optimized capacitance design, switching losses are reduced, and dv/dt tolerance is enhanced, ensuring stable performance in high-frequency scenarios like switching regulators. The device operates over a wide temperature range and has passed long-term reliability tests, such as high-temperature/high-humidity aging, with a failure rate below industry averages. This makes it ideal for critical applications requiring durability, such as data centers, automotive systems, and industrial power supplies.
Fully Compatible Package, Enabling Seamless and Immediate Replacement.
For downstream enterprises, substitution ease is paramount. The VBQA1301 addresses this with its package design. It uses a DFN8(5x6) package, which is fully compatible with the TPH1R403NL1,LQ(M in pinout, dimensions, and thermal interface. Engineers can replace the component directly without PCB layout changes or thermal system adjustments, achieving "plug-and-play" convenience. This compatibility slashes verification time—sample validation typically completes in 1-2 days—and avoids costs from redesign or retooling. It also preserves original product certifications and外观, accelerating supply chain cycles and helping enterprises swiftly adopt domestic alternatives.
Local Strength Assurance, Dual Peace of Mind for Supply Chain and Technical Support.
Compared to imported components plagued by logistics delays and trade risks, VBsemi leverages China's robust semiconductor ecosystem, with production bases in Jiangsu and Guangdong ensuring full-process control and stable mass production. The VBQA1301 boasts a standard lead time under 2 weeks, with emergency orders allowing 72-hour fast delivery, mitigating risks from global disruptions. As a local brand, VBsemi provides dedicated technical support: comprehensive documentation (substitution reports, datasheets, thermal guides), application-specific circuit advice, and 24-hour rapid response for troubleshooting. This eliminates slow support and high communication costs associated with imports, making substitution smooth and worry-free.
From high-efficiency DC-DC converters and switching regulators to server power supplies and automotive electronics, the VBQA1301, with its "parameter match, enhanced reliability, package compatibility,可控 supply, and responsive service," is the preferred domestic alternative to the TPH1R403NL1,LQ(M. It has gained traction in leading companies across industries, earning market recognition. Choosing the VBQA1301 isn't just a component swap—it's a strategic move to secure supply chains, optimize costs, and boost product competitiveness, offering superior performance, stable supply, and local support without R&D overhead.