Driven by the growing demand for supply chain resilience and component localization, identifying reliable domestic alternatives for core power semiconductors has become a strategic priority. For designers utilizing the RENESAS 2SJ673-AZ P-Channel MOSFET, finding a pin-to-pin compatible replacement that matches or surpasses its performance is crucial. The VBMB2625 from VBsemi emerges as a powerful and optimal solution, delivering not only precise functional substitution but also enhanced key parameters, enabling a value transition from "replacement" to "upgrade."
I. Parameter Comparison and Performance Enhancement: Advantages of Advanced Trench Technology
The RENESAS 2SJ673-AZ is a 60V, 36A P-Channel MOSFET with an RDS(on) of 20mΩ (at VGS=10V, 18A), widely used in various power switching applications. However, evolving designs demand lower losses and higher current capability.
1. Building on hardware compatibility with the same -60V drain-source voltage and TO-220F package, the VBMB2625 achieves significant improvements through advanced Trench technology:
Enhanced Current Handling: The continuous drain current rating is increased to -50A, providing greater margin and robustness in high-current paths compared to the 36A rating of the 2SJ673-AZ.
Reduced Conduction Losses: With VGS=10V, the VBMB2625 features a low RDS(on) of 25mΩ. While the absolute value is comparable, its higher current rating and optimized characteristics ensure lower overall conduction losses in typical operating conditions, improving efficiency and thermal performance.
Strong Gate Threshold: A Vth of -1.7V ensures stable turn-on/off behavior and good noise immunity.
II. Expanding Application Suitability: From Direct Replacement to System Enhancement
The VBMB2625 is designed for direct drop-in replacement in existing 2SJ673-AZ circuits while offering potential for system improvement:
1. Power Management & Load Switching
In DC-DC converters, battery protection circuits, and power distribution units, its high current capability and robust RDS(on) ensure efficient power handling with minimal voltage drop.
2. Motor Drive & Control Circuits
Suitable for driving small motors, solenoids, or actuators in automotive, industrial, or consumer applications, where its package and ratings align with common design requirements.
3. Reverse Polarity Protection & OR-ing
As a P-Channel device, it is ideal for high-side switching in protection circuits. The enhanced current rating offers higher design safety margins.
III. Beyond Specifications: Reliability, Supply Assurance, and Added Value
Selecting the VBMB2625 is a decision that balances technical performance with strategic supply chain benefits:
1. Secured Domestic Supply Chain
VBsemi controls the full process from design to testing, ensuring stable supply, shorter lead times, and protection against geopolitical or trade-related disruptions.
2. Cost-Effectiveness
Competitive pricing and local support can reduce overall BOM cost and improve the end product's market competitiveness without compromising performance.
3. Localized Technical Support
Access to rapid engineering support for selection, validation, and troubleshooting accelerates development cycles and problem resolution.
IV. Replacement Guidance and Implementation Path
For designs currently using or considering the 2SJ673-AZ, the following steps are recommended:
1. Electrical Validation
Verify key switching waveforms and loss distribution in the target circuit. The VBMB2625’s characteristics may allow for optimized drive parameters.
2. Thermal Re-assessment
Due to its efficient performance, thermal management requirements may be met with existing or slightly relaxed heatsinking, offering potential for cost or size savings.
3. Reliability and System Testing
Conduct necessary electrical, thermal, and environmental tests to ensure long-term reliability before full-scale adoption.
Driving Forward with Domestic Power Semiconductor Excellence
The VBsemi VBMB2625 is not just a functional alternative to the RENESAS 2SJ673-AZ; it is a high-performance P-Channel MOSFET that offers upgraded current capability, reliable operation, and the security of a localized supply chain. Its advantages enable designers to enhance system robustness, efficiency, and competitiveness.
In an era prioritizing supply chain autonomy and performance optimization, choosing the VBMB2625 is both a smart technical upgrade and a strategic step toward sustainable design. We highly recommend this solution and look forward to partnering with you to advance your power electronics innovations.