Introduction
Power MOSFETs serve as essential switches in modern electronics, managing energy flow with precision. For years, international brands like MCC (Micro Commercial Components) have set benchmarks with components such as the SI2310B-TP. However, supply chain uncertainties and the drive for technological independence have made high-performance domestic alternatives a strategic priority. Represented by VBsemi’s VB1695, domestic MOSFETs are now achieving direct substitution and outperforming international classics.
Part 1: Analysis of the Classic Component
MCC’s SI2310B-TP is an N-channel MOSFET with a drain-source voltage of 60V and a continuous drain current of 3A. It features a low on-resistance of 105mΩ at 10V and 3A, along with lead-free coating, RoHS compliance, UL 94 V-0 flame-retardant epoxy, and moisture sensitivity level 1. This device is widely used in low- to medium-power applications like power management, LED drivers, and portable electronics, offering reliability and compact design in a SOT23-3 package.
Part 2: Performance Surpassing by the Domestic Challenger
VBsemi’s VB1695 directly substitutes the SI2310B-TP and enhances key parameters:
Higher Current Capacity: Continuous drain current reaches 4A (an increase of 1A), enabling greater power handling in similar applications.
Lower Conduction Loss: On-resistance is reduced to 75mΩ at 10V, minimizing conduction losses and improving overall efficiency.
Robust Voltage Ratings: Maintains a drain-source voltage of 60V and gate-source voltage of ±20V, with a threshold voltage of 1.7V for stable switching.
Full Compatibility: Uses a pin-compatible SOT23-3 package, allowing direct replacement without PCB modifications.
Advanced Technology: Built on a Trench process, ensuring optimized performance and reliability.
Part 3: Core Value Beyond Specifications
Choosing a domestic alternative like VB1695 delivers deeper advantages:
Ensuring Supply Chain Security: Reduces reliance on international suppliers, mitigating risks and ensuring stable production.
Optimizing Overall Cost: Offers competitive pricing with superior performance, potentially lowering system costs through improved efficiency.
Accessing Rapid Local Support: Domestic providers like VBsemi enable faster technical assistance and customized solutions for specific applications.
Boosting the Industrial Ecosystem: Each successful substitution strengthens the domestic semiconductor industry, fostering innovation and a virtuous cycle of development.
Part 4: A Robust Path for Substitution Implementation
To ensure a smooth transition, follow these steps:
Detailed Specification Comparison: Review all electrical parameters, including VDS, ID, RDS(on), and switching characteristics.
Rigorous Laboratory Testing: Conduct static and dynamic tests, temperature rise evaluations, and reliability stress assessments.
Small-Batch Pilot Verification: Deploy VB1695 in real-world products to monitor performance and long-term stability.
Develop a Switchover and Backup Plan: Gradually implement the substitution after validation, while keeping the original design as a short-term backup option.
Conclusion: Moving from "Usable" to "Excellent"
The shift from SI2310B-TP to VB1695 demonstrates that domestic power MOSFETs can not only match but exceed international standards in key areas. Adopting such high-performance domestic components is a practical response to supply chain challenges and a strategic step toward building an autonomous, resilient, and innovative industrial future. Now is the time to actively evaluate and integrate quality domestic solutions like VB1695.