In various high-current, low-voltage application scenarios such as switch-mode power supplies, motor drives, battery management systems, and DC-DC converters, TOSHIBA's TPH8R008NH, with its low on-resistance and high power dissipation, has been a popular choice for engineers worldwide. However, in the post-pandemic era, global supply chain disruptions and trade frictions have led to unstable lead times, fluctuating costs, and delayed technical support for this imported component, posing challenges for downstream companies in production scheduling and cost control. Therefore, domestic substitution has become a necessity for ensuring supply chain security and enhancing competitiveness.
VBsemi, leveraging years of expertise in power semiconductors, introduces the VBQA1806 N-channel power MOSFET based on independent R&D. This product is precisely designed to replace the TPH8R008NH, offering superior parameters, technological parity, and full package compatibility. It can be directly used as a drop-in replacement without circuit modifications, providing a more stable, cost-effective, and locally supported solution for high-current electronic systems.
Comprehensive Parameter Surpassing, Ensuring Enhanced Performance.
Tailored as a domestic alternative to the TPH8R008NH, the VBQA1806 achieves significant improvements in key electrical parameters. First, the continuous drain current is increased to 60A, substantially higher than the original model's current rating, enabling robust performance in high-power applications. Second, the on-state resistance is reduced to 5mΩ (@10V gate drive), compared to the TPH8R008NH's 8mΩ (@10V, 17A)—a 37.5% reduction that lowers conduction losses, improves efficiency, and minimizes heat generation. Additionally, the VBQA1806 supports a ±20V gate-source voltage, offering strong gate protection and noise immunity. The 3V gate threshold voltage ensures easy drive compatibility with mainstream driver ICs, facilitating seamless substitution without circuit adjustments.
Enhanced with Advanced Trench Technology, Reliability and Stability Upgraded.
The TPH8R008NH relies on Toshiba's process for low on-resistance. The VBQA1806 employs advanced Trench gate technology, which not only achieves lower RDS(on) but also optimizes switching performance and reliability. The device undergoes rigorous testing, including 100% avalanche testing and high-temperature screening, ensuring excellent robustness under high-current conditions. With optimized capacitance design, it reduces switching losses and enhances dv/dt tolerance, suitable for high-frequency applications. The operating temperature range from -55°C to 150°C ensures adaptability to harsh environments. Long-term reliability tests, such as 1000-hour high-temperature/high-humidity aging, confirm a low failure rate, making it ideal for critical applications like automotive, industrial control, and power tools.
Fully Compatible Package, Enabling Direct and Risk-Free Replacement.
The VBQA1806 uses a DFN8(5X6) package, which is fully compatible with the TPH8R008NH's package in terms of pinout, dimensions, and thermal pad design. Engineers can replace the original component without any changes to the PCB layout or thermal management, achieving "plug-and-play" substitution. This compatibility reduces verification time to 1-2 days, avoids redesign costs, and accelerates time-to-market, allowing enterprises to swiftly adopt domestic alternatives without operational disruption.
Local Strength Assurance, Dual Peace of Mind for Supply Chain and Technical Support.
Unlike imported components, VBsemi leverages domestic manufacturing bases in Jiangsu and Guangdong, ensuring stable mass production and short lead times. The standard lead time for VBQA1806 is within 2 weeks, with expedited options for urgent needs, mitigating risks from international logistics and trade policies. Moreover, VBsemi provides dedicated technical support, including comprehensive documentation, substitution reports, and application guidance. The technical team offers 24-hour response for any issues, eliminating communication barriers with foreign suppliers and ensuring a smooth, worry-free substitution process.
From motor drives and power tools to server power supplies and automotive systems, the VBQA1806, with its "lower RDS(on), higher current capability, package compatibility, controlled supply, and responsive service," has become the preferred domestic alternative to the TPH8R008NH. It has been successfully adopted by leading companies in various industries, gaining market recognition. Choosing VBQA1806 is not just a component replacement but a strategic move to secure supply chains, reduce costs, and enhance product competitiveness—without R&D risks, while enjoying better performance, stable supply, and local support.