In various low-voltage, high-current application scenarios such as power management, motor drives, DC-DC converters, battery protection, and automotive electronics, ROHM's RS1E350BNTB, with its efficient switching performance and low on-resistance, has been a reliable choice for engineers worldwide. However, in the post-pandemic era of global supply chain challenges and trade uncertainties, this imported component faces pain points like extended lead times, cost volatility due to exchange rates, and delayed technical support, constraining production schedules and cost control for downstream companies. Given this demand, domestic substitution has become a necessity for ensuring supply chain security, reducing costs, and enhancing competitiveness.
VBsemi, leveraging its expertise in power semiconductors, introduces the VBQA1301 N-channel MOSFET through independent R&D. This product directly对标es the RS1E350BNTB, offering core advantages of parameter upgrades, technological parity, and full package compatibility. It serves as a drop-in replacement without circuit modifications, providing a stable, cost-effective, and locally attuned solution for low-voltage electronic systems.
Comprehensive Parameter Surpassing, Enhanced Performance for Demanding Conditions.
Tailored as a domestic alternative to the RS1E350BNTB, the VBQA1301 achieves leapfrog improvements in key electrical parameters, ensuring robust performance in high-current applications:
First, the continuous drain current is dramatically increased to 128A, vastly surpassing the original model's 35A—a 266% enhancement in current-carrying capability. This allows seamless adaptation to higher-power designs, improving system stability and enabling upgrades to more demanding loads.
Second, the on-state resistance is reduced to 1.2mΩ (@10V gate drive), lower than the RS1E350BNTB's 1.7mΩ (@10V, 35A). This significantly cuts conduction losses, boosting overall efficiency and reducing heat generation, which eases thermal management demands.
Additionally, the VBQA1301 supports a ±20V gate-source voltage, offering strong gate ESD and noise immunity for reliable operation in complex environments. The 1.7V gate threshold voltage balances drive convenience and switching reliability, compatible with mainstream driver ICs without circuit adjustments.
Advanced Trench Technology, Reliability and Stability Upgraded.
The RS1E350BNTB relies on efficient switching characteristics, while the VBQA1301 employs advanced Trench technology, optimizing device reliability and performance. It features excellent switching speed and low gate charge, reducing switching losses and enhancing dv/dt tolerance for stable operation in high-frequency applications. The device undergoes rigorous testing, including avalanche and high-temperature screening, ensuring durability against energy surges and harsh conditions. With an operating temperature range of -55°C to 150°C and validation through long-term reliability tests, it meets standards for automotive and industrial fields, ideal for critical applications like motor control and power systems.
Fully Compatible Package, Enabling Seamless Replacement.
The VBQA1301 addresses substitution costs through its package design. It uses a DFN8(5X6) package, identical to the RS1E350BNTB in pinout, dimensions, and thermal structure. Engineers can achieve plug-and-play replacement without PCB layout changes or thermal redesign, slashing verification time to 1-2 days. This avoids expenses from PCB revisions and模具 adjustments, accelerating supply chain cycles and helping enterprises quickly upgrade imported components.
Local Strength Assurance, Dual Peace of Mind for Supply Chain and Support.
Compared to imported components with unstable supply chains, VBsemi utilizes China's robust semiconductor ecosystem, with production bases in Jiangsu and Guangdong, enabling full-process R&D and stable mass production. The VBQA1301 offers a standard lead time under 2 weeks, with emergency 72-hour delivery, mitigating risks from logistics, tariffs, or geopolitics. As a local brand, VBsemi provides dedicated technical support: comprehensive documentation (substitution reports, datasheets, thermal guides), customized selection advice, and circuit optimization. Technical issues receive 24-hour responses, resolving pain points of slow support and high communication costs.
From power management and motor drives to DC-DC converters and automotive systems, the VBQA1301, with its core advantages of "superior parameters, enhanced reliability, package compatibility, controllable supply, and attentive service," has become the preferred domestic alternative to the RS1E350BNTB. It is already adopted by leading companies across industries, gaining market recognition. Choosing VBQA1301 is not just a component swap—it's a strategic step for upgrading supply chain security, optimizing costs, and boosting product competitiveness, offering better performance, stable supply, and seamless support without R&D risks.