Explore our high-efficiency N-channel, P-channel, and Co-packaged MOSFETs engineered for DC-DC conversions and robust power distribution network applications.
In modern power electronics, the demand for compact, high-efficiency, and thermally stable DC-DC converters has pushed semiconductor components to their operational limits. Engineers designing buck, boost, or buck-boost converters must rigorously balance parameters such as Drain-to-Source On-Resistance ($R_{DS(on)}$), Gate Charge ($Q_g$), and Reverse Recovery Loss ($Q_{rr}$). Sourcing high-quality equivalents that perfectly match or exceed these electrical parameters is critical to avoiding system redesigns while mitigating geopolitical supply chain risks.
Our latest range of WINSOK MOSFETs is engineered specifically to match the demanding requirements of switching regulators. By optimizing the silicon topology and deploying trench gate technologies, these devices drastically minimize both conduction losses and switching losses, enabling power supplies to achieve up to 96% conversion efficiency.
HONGKONG Olukey INDUSTRY CO., LIMITED is a premier global solution provider focusing on the overall integration and supply of high-end electronic components. Our product portfolio spans three core divisions: high-reliability WINSOK MOSFETs, advanced Cmsemicon MCUs, and customized PCBA circuit board solutions. This comprehensive vertical capability allows us to supply ready-to-use, optimized solutions directly to original equipment manufacturers (OEMs) and electronic manufacturing services (EMS) globally.
We serve critical sectors including automotive electronics, military electronics, industrial automation, telecommunications, renewable energy systems, IoT, smart medical care, and high-performance consumer hardware. Standing at the forefront of the Asia-Pacific supply chain, we bridge the gap between Tier-1 global component architectures and cost-effective, high-yield localized production.
Why design engineers and purchasing teams globally select Olukey as their preferred partner for replacement power semiconductors.
Our low-to-medium voltage semiconductor technology covers critical voltage classes from 15V, 20V, 30V, 40V, 60V, 80V, 100V, up to high-voltage ranges like 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, and 650V. This covers virtually all standard switching rails inside modern DC-DC topologies.
With more than 40 modern packages including DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, and TO-220, we offer direct pin-to-pin drop-in replacements for standard packages. This ensures zero board re-layouts or mechanical tooling adjustments.
Based in Shenzhen and leveraging the Asia-Pacific raw silicon infrastructure, we bypass intermediate markups. Olukey delivers significant cost improvements, reduced lead times (frequently under 4-6 weeks), and high production scalability relative to Western fabs.
By partnering with Cmsemicon, we offer highly integrated digital power supply solutions. Modern DC-DC converters are increasingly moving from purely analog loops to software-defined control. Using Cmsemicon microcontrollers coupled with WINSOK low-$R_{DS(on)}$ switching MOSFETs, we offer ready-to-market solutions that reduce footprint size, improve dynamic load transient response, and provide telemetry via PMBus protocols.
This holistic control-to-switch system integration represents our core competency in supplying complete, verified solutions rather than isolated components, minimizing design validation risks for our worldwide client base.
Adapting to modern electrical architectures to support massive power densities, high thermal margins, and environmental sustainability.
Modern automotive standards dictate absolute safety. Our medium-voltage MOSFET solutions operate in critical 48V mild hybrid sub-grids, auxiliary DC-DC buck modules, and advanced driver assistance systems (ADAS) where low switching losses prevent excessive heat generation within the cabin modules.
High-speed telecom systems demand high current capabilities within standardized telecom bricks (e.g. 1/8th and 1/16th brick converters). Using high-density packages like DFN5X6-8, our MOSFET equivalents support high thermal dissipation while meeting critical space limitations.
From micro-inverters to smart charging stations, efficient power management is key. Our 100V-650V high-voltage MOSFETs feature excellent dV/dt ruggedness and high avalanche energy (EAS) thresholds to resist line-side transients in outdoor solar installations.
A comparative table demonstrating direct equivalence and pin-to-pin replacements for mainstream semiconductor brands.
| Standard Industry PN | Winsok Drop-in Equivalent | Package Style | Key Parameters (Vds / Id / Rds_on) | Target DC-DC Applications |
|---|---|---|---|---|
| AON6276 / AON6278 | WSR3090 / WSD4062DN56 | DFN5X6-8L | 30V-40V | 60A-90A | < 2.1 mΩ | Synchronous Buck Converters, High-Current Point-of-Load (PoL) |
| NVMFS6H824N | AON628 / AON6448 Equivalent | DFN5X6-8L | 60V-80V | 40A-70A | < 5.0 mΩ | Automotive Motor Controllers, 48V Input DC-DC Converters |
| AON6226 / AON6294 | OEM DFN5X6-8 Series | DFN5X6-8 | 30V-100V | 25A-80A | Custom optimized | Power Delivery (PD) Adapters, Battery Protection Circuits |
| AONS6292 / AONS6692 | WSD20L75DN33 | DFN3X3-8 / DFN5X6 | 20V-30V | 50A-75A | < 1.8 mΩ | Sub-Notebook Charger Inputs, Mobile Device Battery Management |
Answers to technical and commercial sourcing inquiries compiled by our technical field application engineering (FAE) team.
To ensure safe drop-in replacement in switching power systems, our FAEs check three core areas: 1. Electrical limits: Breakdown voltage ($V_{DSS}$), peak drain current ($I_d$), and gate threshold voltage ($V_{GS(th)}$). 2. Dynamic Figures of Merit: Total gate charge ($Q_g$) and gate-drain charge ($Q_{gd}$) to prevent switching loss spikes. 3. Package compatibility: Direct pin-to-pin physical compatibility (e.g. standard DFN5X6-8 or SOT-23-3L layout) to avoid design layout variations.
Relying on a single semiconductor source can lead to production delays during fab capacity constraints. Sourcing equivalent components from regional hubs like Hongkong Olukey Industry offers alternative supply channels, lower lead times, and competitive price structures, ensuring continuous supply even during global logistics shortages.
Yes. Working with original fabs allows us to adjust electrical values—such as optimizing gate threshold levels or matching specific switching speed requirements—to align with specialized automotive or industrial converter profiles. Contact our sales department to review custom wafer runs.
Select from our complete range of certified power semiconductor switches for high-density power supply architectures.
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