Direct replacement cross-references for major global semiconductor brands, certified for high-reliability applications.
In the era of rapid electrification, the performance requirements for Battery Management Systems (BMS) are changing dramatically. Low-voltage and medium-voltage power MOSFETs act as the electronic "switches" in battery protection boards, managing charging, discharging, and short-circuit conditions.
Engineers are moving away from legacy packaging towards advanced packages like DFN5X6-8, DFN3X3-8, and TOLL. This shift is driven by the demand for ultra-low drain-source on-state resistance (RDS(on)) and optimal thermal management. Minimizing heat generation inside compact battery packs (such as those for electric micro-mobility, high-rate power tools, and consumer laptops) is critical for preventing thermal runaway. As modern lithium-ion and LiFePO4 cells support higher currents, MOSFETs must handle massive continuous currents without exceeding safe junction temperatures.
Moreover, wide-bandgap materials (like GaN) are emerging at the high end, but silicon-based MOSFET structures remain the undisputed choice for battery protection circuits due to their cost-effectiveness, avalanche ruggedness, and well-understood failure modes. Manufacturers are innovating within standard silicon geometry to offer competitive performance at significantly lower price points.
HONGKONG Olukey INDUSTRY CO., LIMITED is a solution provider focusing on the overall solution of electronic product components. The main products mainly include: WINSOK MOSFET, Cmsemicon MCU, PCBA circuit board solution development and other three types of product lines.
At present, the products of Olukey Industry are widely used in automotive electronics, military electronics, smart industry, new energy, smart medical care, 5G, Internet of Things, smart home, and various consumer electronics products. Relying on the advantages of global general agents of major original factories, we are based in the Asia-Pacific market. We provide customers with various advanced high-tech electronic components using comprehensive superior services, assisting manufacturers in producing high-quality products and providing comprehensive services.
The global semiconductor market has seen dramatic fluctuations. Supply chain bottlenecks, fluctuating lead times, unexpected End-of-Life (EOL) cycles, and shifting pricing strategies from Tier-1 brands (like Infineon, Texas Instruments, ON Semi, and Toshiba) have forced B2B procurement managers to prioritize supply chain resilience.
A single-source procurement model is no longer viable for scale manufacturing. Enterprise groups require pin-to-pin, electrical-equivalent secondary sources (alternatives) to protect assembly lines from line-down crises. Implementing "Alternative Factories" provides two main strategic benefits:
Olukey Industry provides cross-references for industry standards. For example, replacing Infineon's BSC series, TI's CSD series, and Toshiba's TPH series with WINSOK MOSFETs allows sourcing departments to cut lead times from 26+ weeks down to short-term stocking intervals, with free engineering samples available for rapid evaluation.
We use comprehensive high-quality services to provide customers with various types of advanced high-tech electronic components, assist manufacturers in producing high-quality products and provide comprehensive services. Over the years, the company has relied on reputation to survive, adhering to the tenet of "quality first, service first", and has established good cooperative relationships with many high-tech enterprises and original manufacturers at home and abroad.
Relying on the advantages of global general agents of major original manufacturers, we are based on the Asia-Pacific market. Through active market development and effective resource integration, it has become one of the outstanding and fast-growing agents in the Asia-Pacific region. The company has many years of professional distribution experience. We use our comprehensive advantageous services to provide customers with various types of advanced high-tech electronic components, assist manufacturers in producing high-quality products and provide comprehensive services.
WINSOK MOSFET's product voltages are mainly medium and low voltage: 15V, 20V, 30V, 40V, 60V, 80V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, 650V. The main packages include DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, TO-220, etc. There are more than 600 models and more than 40 packages. Extensive coverage of medium-voltage and low-voltage MOSFET product lines on the market.
Cmsemicon MCU is a microcontroller company born in Shenzhen, with rich product types and technology research and development experience.
Becoming a global high-value agent is the common goal pursued by OLUKEY Industrial employees. We adhere to the corporate values of "Pragmatism, Win-win, Service and Responsibility", continue to strengthen service quality, and aim to provide high-quality services. Work hand in hand with suppliers to jointly explore a larger market and contribute to the prosperity and development of semiconductors.
Substituting a MOSFET in a battery protection circuit (such as a 1S/2S consumer BMS, or multi-cell 10S-20S industrial ESS packs) requires careful verification of electrical parameters. A mismatched component can lead to high thermal loads, unexpected oscillations, or catastrophic failure under short-circuit conditions.
Engineering teams must evaluate the following specifications when substituting components:
WINSOK's advanced silicon designs match or exceed the key parameters of common industry components:
We offer integrated product portfolios designed for diverse industrial ecosystems. By combining WINSOK MOSFETs with Cmsemicon MCUs and custom PCBA design services, Olukey provides scalable, high-performance designs for these core sectors:
As power density requirements rise, Olukey and WINSOK are advancing their manufacturing capabilities to support next-generation designs. Our roadmap focuses on three main developments:
1. Package Innovation: Expanding our product line in space-efficient packages like TOLL (Transistor Outline Leadless) and PDFN, which reduce footprint size while lowering package parasitic resistance and thermal resistance ($R_{\theta JC}$).
2. Advanced Trench Technologies: Transitioning to sub-micron trench technology to further reduce on-state resistance down to sub-milliohm levels for medium-voltage MOSFETs. This improvement helps minimize static power loss in high-current applications.
3. Complete Solutions: Strengthening the integration of Cmsemicon MCUs with custom PCBA designs. This allows us to offer plug-and-play BMS modules that speed up product development for consumer electronics and industrial clients.
Answers to common questions regarding sample requests, cross-referencing, and technical substitutions.
You can request samples by contacting our sales office with your current part number (e.g., TI, Infineon, or Toshiba) and project description. Our engineering team will supply pin-compatible replacement parts, along with datasheets and cross-reference reports, to streamline testing.
Key parameters include Drain-to-Source Voltage ($V_{DS}$), Gate-to-Source Threshold Voltage ($V_{GS(th)}$), continuous Drain Current ($I_D$), and On-Resistance ($R_{DS(on)}$). You should also verify the packaging layout and pin assignments to ensure it fits the existing PCB footprint.
We source from leading wafer foundries and packaging houses. We perform comprehensive electrical, thermal, and visual testing during the assembly process to meet strict quality control standards. This ensures high reliability in applications ranging from automotive electronics to consumer battery management systems (BMS).
For standard parts, we maintain safety stock to enable immediate dispatch. For customized production runs, our average lead times range from 4 to 8 weeks. This is significantly shorter than the current industry average, helping you minimize supply chain disruptions.
Advanced packaging designs optimized for high-power switching and low thermal losses.
Olukey
