Select from our premium in-stock semiconductor components optimized for fast-charging topologies, high-speed switching, and synchronous rectification.
In the rapidly accelerating consumer electronics and electric mobility landscapes, the demand for compact, highly efficient, and thermal-optimized power adapters has reached an unprecedented peak. Driven by charging protocols such as USB Power Delivery (USB-PD 3.1), Quick Charge (QC), and variable voltage Smart Charging systems, modern designers are pushing boundaries to squeeze hundreds of watts of power into travel-sized power bricks.
The optimization of secondary-side synchronous rectification (SR) and primary-side switching is critical to overcoming the bottleneck of thermal dissipation. Silicon MOSFETs remain the backbone of high-volume commercial charging adapters. Achieving maximum power density requires careful optimization of key semiconductor characteristics. Key metrics such as the Drain-Source On-Resistance (RDS(on)), Total Gate Charge (Qg), and output capacitance (Coss) must be precisely balanced to avoid thermal runaway while limiting switching losses.
As a global agent and solution provider, Hongkong Olukey Industry Co., Limited partners with leading manufacturers like WINSOK to supply high-reliability, low-voltage to medium-voltage MOSFET packages that meet the strict requirements of tier-1 power supply OEMs.
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. Provide customers with various advanced high-tech electronic components by using comprehensive superior services, assist manufacturers in producing high-quality products and provide comprehensive services.
Procurement engineers at Tier-1 adapter factories face intense market dynamics. Sourcing departments seek components that balance strict parametric consistency, immediate sample availability, cost competitiveness, and guaranteed lead times. In high-power density designs, a variance of even 0.5mΩ in RDS(on) can cause thermal stress inconsistencies, resulting in field failures and safety recalls.
Our products undergo rigorous testing. Advanced testing protocols verify avalanche ruggedness (EAS) and high-temperature gate bias (HTGB) stability, ensuring performance under harsh operation.
We support varied form factors (DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, and TO-220) to fit low-profile adapters, multi-port docking stations, and heavy-duty industrial designs.
By combining Hong Kong's global logistics hub with Shenzhen's manufacturing base, Olukey provides rapid wafer processing, assembly, testing, and customs routing.
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.
Deploying power supply solutions globally requires strict adherence to international electrical safety and chemical composition regulations. Whether designing chargers for EU markets demanding CE marking, RoHS, and REACH compliance, or US markets requiring UL and FCC certification, component sourcing must align with these regulatory frameworks.
To bridge the gap between design and production, Olukey Industry provides localized Field Application Engineering (FAE) support. Our engineers assist with circuit design reviews, layout optimization to minimize parasitic inductance, and EMI troubleshooting. This localized support ensures that transitions from initial design to mass production are seamless and efficient.
Our MOSFET manufacturing processes use green, halogen-free packaging materials, ensuring compliance with global environmental standards. This compliance facilitates smoother certification paths for end-use chargers, helping clients navigate eco-design regulations and landfill diversion requirements.
In space-constrained travel adapters (30W - 140W), low-profile DFN3X3-8 and DFN5X6-8 packages are utilized. These flat-lead packages replace traditional bulky TO-220 options, reducing parasitic inductance and enabling higher power densities.
Modern charging hubs distribute power dynamically across multiple USB-C and USB-A outputs. Medium-voltage MOSFETs (30V - 100V) manage independent buck-boost stages, maintaining stable operation as load profiles change.
Automotive charging systems face battery voltage fluctuations and electrical noise. Winsok's robust MOSFETs handle transient spikes, supporting reliable in-cabin charging under varying thermal and electrical conditions.
The power electronics sector is experiencing significant material diversification. Wide Bandgap (WBG) materials, notably Gallium Nitride (GaN), have redefined primary-side high-frequency performance. However, co-designing with high-performance silicon remains essential.
Silicon MOSFETs continue to offer advantages in secondary-side synchronous rectification (SR) due to their low RDS(on) at lower voltages and excellent cost-to-performance ratios. Combining a GaN primary switch with a silicon SR MOSFET creates a cost-effective and highly efficient topology for modern fast chargers. As USB-PD standards evolve toward 240W outputs (48V at 5A), selecting the right secondary-side silicon switch is critical to avoiding thermal bottlenecks.
Browse through our technical support library addressing common queries regarding sample evaluation, electrical specifications, cross-referencing, and shipping timelines.
You can contact our sales team through Hongkong Olukey Industry. We provide free samples to qualified corporate engineering teams and ODM partners for prototype evaluation. Simply submit your schematic requirements, expected annual volumes, and current bill of materials (BOM).
The DFN5X6-8 package features lower parasitic lead inductance and resistance compared to the TO-252. Its exposed thermal pad design allows for improved heat dissipation directly into the PCB copper planes, making it ideal for compact, low-profile fast chargers.
Winsok MOSFETs offer pin-to-pin equivalence and highly comparable electrical parameters (such as RDS(on) and gate charge) to major brands like Infineon, ON Semi, and AOS. This compatibility provides OEMs with a reliable secondary sourcing option that helps lower bill-of-materials costs.
Standard lead times range from 4 to 8 weeks depending on the package type and fab capacity. For long-term partners, Olukey Industry maintains buffer stock in our Hong Kong warehouse to support prompt shipping schedules.
Yes, our product catalog includes AEC-Q101 qualified MOSFETs designed specifically for automotive electronics, in-cabin USB power delivery modules, and body control applications.
Cmsemicon microcontrollers provide the intelligence required for charging protocol negotiation (e.g., handshake agreements for USB-PD, PPS). They work in tandem with Winsok MOSFET gate drivers to safely control power output states.
Every wafer run undergoes parametric testing, wafer-level reliability (WLR) monitoring, and final assembly testing. Testing includes high-temperature reverse bias (HTRB) and gate leakage testing to ensure high reliability.
Yes. Winsok's low RDS(on) N-channel MOSFETs (60V to 150V) are optimized for high-frequency synchronous rectification stages in LLC and active clamp flyback (ACF) power supply topologies.
Yes. All our products conform to EU RoHS 2.0 and REACH environmental guidelines. We maintain comprehensive documentation to support compliance verification.
Yes. Olukey Industry provides comprehensive design services, including schematic reviews, thermal simulation guidance, and layout suggestions to optimize performance.
Review the second batch of our high-demand switching and logic-level power MOSFETs, currently in stock and ready for global delivery.
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