In various low-voltage, high-current switching applications such as power management, motor drives, battery protection, and DC-DC converters, ROHM's RQ5E065AJTCL, with its low on-resistance, high-power TSMT3 package, and RoHS compliance, has been a popular choice for engineers worldwide. However, in the post-pandemic era, global supply chain disruptions and trade frictions have exposed pain points for this imported component: unstable lead times, cost fluctuations due to exchange rates, and slow technical support. These issues hinder production schedules and cost control for downstream companies. Thus, domestic substitution has become a necessity for ensuring supply chain security and enhancing competitiveness.
VBsemi, with extensive experience in power semiconductors, introduces the VBB1328 N-channel MOSFET based on independent R&D. This product directly对标es the RQ5E065AJTCL, offering parameter upgrades, technological parity, and package compatibility. It serves as a drop-in replacement without circuit modifications, providing a more stable, cost-effective, and locally supported solution for low-voltage electronic systems.
Comprehensive Parameter Surpassing, Enhanced Performance for Demanding Conditions.
Tailored as a domestic alternative to the RQ5E065AJTCL, the VBB1328 achieves significant improvements in key electrical parameters:
Firstly, the drain-source voltage is 30V, matching the original model, ensuring reliability in low-voltage applications. Secondly, the continuous drain current is 6.5A, equivalent to the original, providing robust current-carrying capability. Thirdly, the on-state resistance is as low as 16mΩ @10V gate drive, competitive with the RQ5E065AJTCL's 13.7mΩ @4.5V and 17.9mΩ @2.5V. This low RDS(on) reduces conduction losses, improving overall efficiency and reducing heat generation in high-frequency switching applications.
Additionally, the VBB1328 supports a ±20V gate-source voltage, offering strong gate ESD and noise immunity, preventing unintended turn-on. The 1.7V gate threshold voltage balances drive convenience and switching reliability, compatible with mainstream driver ICs without circuit adjustments.
Enhanced with Advanced Trench Technology, Reliability and Stability Upgraded.
The RQ5E065AJTCL leverages low on-resistance for efficient switching. The VBB1328 employs advanced Trench technology, optimizing device reliability and switching performance. It undergoes rigorous testing, including 100% avalanche testing and high-temperature screening, ensuring excellent single-pulse avalanche energy tolerance. This reduces the risk of device damage under surge conditions. The optimized capacitance structure minimizes charge/discharge losses during switching, enhancing dv/dt tolerance for stable operation in fast transient scenarios. The VBB1328 operates over a wide temperature range of -55°C to 150°C, suitable for industrial and outdoor environments. It passes long-term reliability tests, such as 1000-hour high-temperature/high-humidity aging, with a failure rate below industry average, ideal for applications like consumer electronics, automotive systems, and portable devices.
Fully Compatible Package, Enabling Seamless Replacement.
The VBB1328 uses a standard SOT23-3 package, which is pin-to-pin compatible with the RQ5E065AJTCL's TSMT3 package in terms of pinout, spacing, and dimensions. Engineers can directly replace the original component without PCB layout changes or thermal system adjustments, achieving "plug-and-play" substitution. This compatibility reduces verification time to 1-2 days, avoids redesign costs, and ensures quick integration into existing production lines, shortening the supply chain cycle.
Local Strength Assurance, Dual Peace of Mind for Supply Chain and Support.
Compared to imported components, VBsemi leverages China's semiconductor industry chain, with production bases in Jiangsu and Guangdong, ensuring full-process R&D and stable mass production. The VBB1328 has a standard lead time within 2 weeks, with emergency orders delivered in 72 hours, mitigating risks from supply chain volatility and geopolitics. As a local brand, VBsemi offers professional technical support with "one-on-one" services: comprehensive documentation, including substitution验证 reports, datasheets, and application guides, plus tailored solutions based on customer needs. Technical issues are addressed within 24 hours, resolving slow response and high communication costs of imported components.
From power management and motor drives to battery protection and DC-DC converters, the VBB1328, with its core advantages of "superior parameters, stable performance, package compatibility, controllable supply, and attentive service," has become the preferred domestic alternative to the RQ5E065AJTCL. It has been adopted by leading companies in various industries, gaining market recognition. Choosing the VBB1328 is not just a component replacement; it is a strategic move for upgrading supply chain security, optimizing costs, and enhancing product competitiveness—without R&D modification risks, while enjoying better performance, stable supply, and convenient support.