High-reliability power semiconductors optimized for high-voltage switching, power conversion, and automotive thermal management.
The global transition to electrification has placed immense pressure on power electronics systems, particularly the On-Board Charger (OBC). As the key system converting AC grid power to DC power to charge vehicle battery packs, the OBC dictates charging speed, overall power conversion efficiency, and spatial utilization within the vehicle chassis. At the heart of these subsystems lies the Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET).
Modern OBC architectures are transitioning from legacy 3.3 kW single-phase systems to 11 kW and 22 kW three-phase bidirectional topologies. This architectural evolution demands power switches that display ultralow RDS(on) (Drain-Source On-State Resistance), minimized gate charge (Qg), and superior thermal properties to operate at higher switching frequencies. High switching frequencies enable design engineers to reduce the footprint of magnetic components (inductors and transformers), leading to significantly higher power densities.
Procuring MOSFETs for On-Board Chargers in bulk involves balancing stringent automotive compliance with supply chain economics. OEM and Tier-1 automotive integrators cannot rely on generic components; they require parts designed to withstand extreme thermal cycling, high transient voltages, and continuous operation under load. Sourcing custom MOSFETs at a wholesale level enables developers to specify parameters such as threshold voltage (Vth) ranges, custom lead frame configurations, and enhanced gate oxide thickness to protect against electrical overstress (EOS).
Olukey Industry, utilizing the robust manufacturing and material capabilities of WINSOK MOSFETs, fills the gap between raw semiconductor fabrication and customized, application-specific integration. By managing everything from custom die layouts to advanced packaging formats (such as TOLL, DFN5x6, and TO-263), we provide industrial buyers with highly reliable products that reduce board space and lower system costs.
WINSOK MOSFET range distributed by Olukey Industry supports diverse voltage domains and low package thermal resistance.
Comprehensive coverage of low-to-medium voltage configurations: 15V, 20V, 30V, 40V, 60V, 80V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, and 650V.
Optimized for footprint reduction using DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, TO-220, and high-power TOLL-8L packages.
Every batch undergoes strict gate-oxide testing, thermal transient testing, and dynamic parameter characterization to meet critical operating limits.
In the highly competitive EV supply chain, geographic proximity to raw materials, wafer fabrication facilities, and packaging lines is crucial. China's Factory 4.0 model combines automated manufacturing lines with real-time IoT quality tracking. This enables high-yield runs of complex power semiconductors, providing significant cost advantages while maintaining strict quality control.
Our manufacturing and assembly hubs implement strict lean manufacturing standards. Real-time monitoring of wafer diffusion processes, wire bonding precision, and packaging integrity ensures that every wholesale batch of WINSOK MOSFETs is uniform. By working directly with Olukey Industry, global buyers benefit from localized logistics, direct-from-factory pricing, and engineering support that speeds up time-to-market.
Additionally, our supply chain is structured to mitigate geopolitical risks. By maintaining raw silicon wafers in reserve and utilizing redundant manufacturing sites across the Asia-Pacific region, we guarantee supply continuity even during peak demand periods.
HONGKONG Olukey INDUSTRY CO., LIMITED is an electronic product components solution provider. 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. Over the years, the company has relied on its reputation to grow, 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.
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.
Optimized semiconductor configurations tailored for real-world electronic integration and harsh operational environments.
Ideal for primary-side phase-shifted full-bridge (PSFB) converters, LLC resonant converters, and active clamp flyback topologies. Low gate charge ensures clean high-frequency switching with minimal EMI.
Key package: TO-263 / TOLL-8LUsed in photovoltaic inverter stages, battery management systems (BMS), and brushless DC (BLDC) motor drivers. High avalanche ruggedness prevents device failure during transient spikes.
Key package: TO-220 / TO-252Designed for space-constrained IoT nodes, smart medical modules, and fast-charging USB-PD adapters. Tiny footprint packages reduce PCB complexity without sacrificing performance.
Key package: DFN3X3-8 / SOT-23
When procurement managers buy custom MOSFETs for OBC applications, they must look beyond unit costs. The true cost of ownership depends on design-in efficiency, defect rates, and supply reliability. High device failure rates lead to expensive field recalls and manufacturing downtime, which can erode profit margins.
Olukey Industry mitigates these risks by offering comprehensive design-in support. Our engineering team works directly with client engineers to select the optimal MOSFET. We optimize key parameters like gate drive voltage and parasitic capacitance to match your design's microcontroller (such as Cmsemicon MCUs) and gate drivers. This co-design approach minimizes switching losses and simplifies thermal management, allowing for smaller, lighter heat sinks.
Furthermore, our wholesale distribution network is optimized for lean manufacturing. We offer flexible production and delivery scheduling to match your assembly runs, reducing inventory carrying costs while ensuring you always have the components you need.
Detailed technical answers for component engineers and B2B procurement professionals.
Explore additional high-performance WINSOK MOSFETs and custom-packaged components available for bulk purchase.
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