In various high-frequency, high-efficiency application scenarios such as switch-mode DC-DC converters, power management systems, and industrial power supplies, ROHM's HP8K24TB, with its low on-resistance and dual N-channel design, has been a preferred choice for engineers globally. However, against the backdrop of post-pandemic global supply chain disruptions and trade uncertainties, this imported component faces growing pain points: extended lead times (often unpredictable), costs vulnerable to exchange rate fluctuations, and delayed technical support. These issues severely impact production schedules and cost control for downstream enterprises. Thus, domestic substitution has evolved from an "option" to a "necessity," becoming a critical strategy for ensuring supply chain security, reducing costs, and enhancing core competitiveness.
VBsemi, leveraging years of expertise in power semiconductors, introduces the VBQA3303G N-channel MOSFET pair based on independent R&D. This product is precisely engineered to replace the HP8K24TB, offering core advantages of parameter upgrades, technological parity, and full package compatibility. It serves as a direct drop-in replacement without any circuit modifications, delivering a more stable, cost-effective, and locally supported high-quality solution for DC-DC converter and related systems.
Comprehensive Parameter Surpassing, Ample Performance Redundancy, Adapting to Demanding Conditions.
Tailored as a domestic alternative to the HP8K24TB, the VBQA3303G achieves significant, leapfrog improvements in key electrical parameters. Firstly, the continuous drain current is boosted to 60A, substantially higher than the original model's rated current of 27A—a 122% enhancement in current-carrying capacity. This enables support for higher power densities and improved system stability in demanding applications. Secondly, the on-state resistance is as low as 3.4mΩ (@10V gate drive), comparable to the HP8K24TB's low resistance, while offering better overall efficiency and reduced conduction losses. Additionally, the VBQA3303G supports a ±20V gate-source voltage, providing robust gate ESD protection and noise immunity, preventing false triggering in complex electromagnetic environments. The 1.7V gate threshold voltage balances driving ease and switching reliability, seamlessly matching mainstream driver ICs without requiring drive circuit adjustments.
Enhanced with Advanced Trench Technology, Reliability and Stability Inherited and Upgraded.
The HP8K24TB relies on low on-resistance for high efficiency. The VBQA3303G employs advanced Trench technology, optimizing device performance and reliability across multiple dimensions. It features excellent switching characteristics, low gate charge, and high dv/dt tolerance, ideal for high-frequency switching in DC-DC converters. The device undergoes 100% avalanche testing and rigorous screening, ensuring robustness against voltage spikes and energy surges. With an operating temperature range of -55°C to 150°C, it withstands harsh industrial environments and extreme climates. Long-term reliability verifications, including high-temperature/high-humidity (85°C/85% RH) aging tests, confirm a failure rate far below industry averages, making it suitable for critical applications like servers, telecommunications, automotive systems, and portable electronics.
Fully Compatible Package, Enabling "Virtually Cost-Free, Risk-Free, and Immediate" Replacement.
For downstream enterprises, a core concern in domestic substitution is the R&D effort and time involved. The VBQA3303G addresses this through its package design. The device uses a DFN8(5X6)-C package, fully compatible with the HP8K24TB in pinout, dimensions, and thermal pad layout. Engineers need not modify PCB layouts or thermal designs, achieving "plug-and-play" replacement. This compatibility slashes verification time to 1-2 days, eliminates costs from PCB revisions or mold adjustments, and preserves original product certifications and外观 designs, accelerating time-to-market and helping enterprises swiftly upgrade imported components.
Local Strength Assurance, Dual Peace of Mind for Supply Chain Security and Technical Support.
Compared to imported components with unstable supply chains affected by international logistics, trade policies, and exchange rates, VBsemi leverages China's robust semiconductor industry chain, with modern production bases and R&D centers in Jiangsu and Guangdong. This enables full-process independent R&D and stable mass production of the VBQA3303G. Standard lead times are compressed within 2 weeks, with emergency orders enabling 72-hour rapid delivery, mitigating risks from supply chain volatility, tariffs, and geopolitics. As a local brand, VBsemi offers a professional technical support team with "one-on-one" customized services: comprehensive documentation including substitution验证 reports, datasheets, thermal guides, and application circuit references, plus tailored selection advice and optimization solutions. Technical issues receive rapid responses within 24 hours, resolving pain points of slow support and high communication costs associated with imported components.
From switch-mode DC-DC converters and industrial power supplies to motor drives, battery management, and consumer electronics, the VBQA3303G, with its core advantages of "superior current capacity, high efficiency, package compatibility, controllable supply, and attentive service," has become the preferred domestic alternative to the HP8K24TB. It has already been adopted by leading companies across industries, earning high market recognition. Choosing VBQA3303G is not merely a component replacement; it is a strategic step for enterprises to upgrade supply chain security, optimize production costs, and enhance product competitiveness—requiring no R&D modification risks while enjoying better performance, stable supply, and convenient local support.