Engineered low-RDS(on) transistors, custom microcontrollers, and multi-channel integrated components designed to maximize power delivery and system safety.
HONGKONG Olukey INDUSTRY CO., LIMITED is a premier global solution provider focusing on the design, optimization, and packaging of advanced electronic components. Our product portfolio spans three core divisions: WINSOK MOSFET, Cmsemicon MCU, and comprehensive PCBA circuit board solution development. By integrating these three pillars, we deliver optimized, application-specific designs directly to electronic manufacturing service providers and global distributors.
Currently, our products are widely integrated across high-reliability industries, including automotive electronics, military electronics, smart industrial automation, new energy storage systems, smart medical appliances, 5G infrastructure, the Internet of Things (IoT), smart home ecosystems, and high-performance consumer electronic products. Based in the Asia-Pacific market and leveraging global distribution agreements, we empower our manufacturing partners to produce cutting-edge, defect-free systems via comprehensive support services.
Why standard semiconductors fail in motor-driven power applications, and how Olukey Industry's next-generation designs mitigate critical faults.
Under locked-rotor states, power tool motors generate huge inductive kickbacks. Our MOSFETs undergo 100% Unclamped Inductive Switching (UIS) testing to ensure the silicon can absorb high single-pulse avalanche energy (Eas) without structural failure.
By implementing sub-micron trench topologies, we reduce conduction losses. Low static resistance minimizes thermal build-up inside enclosed hand tool housings, extending operating runtimes for cordless platforms.
High switching frequencies generate substantial parasitics. Maintaining a Qdg/Qgs ratio below 1.0 prevents dynamic turn-on faults caused by rapid drain-source voltage transients (dV/dt), preserving gate driver integrity.
Offering over 600 models across more than 40 robust packages to fulfill every design constraint in medium and low-voltage applications.
Our product portfolio ranges from low-voltage DC-DC converters to high-voltage power grids: 15V, 20V, 30V, 40V, 60V, 80V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, and 650V.
To support high-density integration, we package our silicon across industry-standard outlines, including DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, and TO-220. This comprehensive coverage satisfies current power tool topologies, including 12V hand-held drills, 18V-24V impact drivers, and 36V-82V professional landscaping equipment.
In addition, our collaboration with Cmsemicon allows us to provide customized microcontrollers (MCU) born in Shenzhen's technology corridor, delivering integrated system control and power switching under one unified supply chain.
How Winsok MOSFETs perform under regional operating conditions, diverse climates, and local load dynamics.
Commonly deployed in North American and European job sites where heavy-duty impact wrenches, angle grinders, and hammer drills require sustained current draws exceeding 100A during peak loading. Winsok DFN5x6-8L and TO-263 packages handle transient thermal dissipation effectively.
Popular in Australia and Northern Europe, professional robotic lawnmowers, chainsaws, and hedge trimmers require high battery voltage (36V to 80V) to manage high grass or dense wood. Medium-voltage N-channel MOSFETs (60V to 100V) ensure cool operation in warm climates.
Integrated workshop environments require tools with Bluetooth telemetry and torque tracking. Combining Winsok low-voltage SOT-23/SOP-8 control switches with Cmsemicon 8-bit/32-bit RISC MCUs permits real-time communication without draining battery packs.
Pioneering advancements in power density, material sciences, and multi-chip module packaging.
Our upcoming generation of SGT MOSFETs aims for an additional 25% reduction in gate-to-drain charge (Qgd) and dynamic switching losses, allowing switching frequencies up to 150kHz for ultra-compact gate drivers.
Addressing thermal limitations in enclosed power tool housings, we are expanding our Top-Side Cooling packages. Heat is dissipated directly into an external heatsink rather than the PCB, reducing junction temperatures by up to 20°C.
For industrial corded and next-generation ultra-fast charging systems, we are planning 650V Silicon Carbide (SiC) and Gallium Nitride (GaN) switches to improve efficiency in heavy-duty brick charges and station docks.
By coupling component manufacturing with localized PCBA development, Olukey Industry streamlines electronics procurement. Customers no longer need to manage multiple suppliers for silicon switches, microcontrollers, and board manufacturing.
Our engineering teams design complete motor control boards and battery protection circuits, handling everything from schematic design and layout optimization to component placement and validation. This unified approach reduces electromagnetic interference (EMI) issues and ensures compatibility between Winsok MOSFET gate characteristics and Cmsemicon MCU drive currents.
Providing cost advantages and production scaling through the Shenzhen-Hong Kong industrial semiconductor ecosystem.
Operating from Shenzhen and Hong Kong puts us at the center of the world's power electronics supply chain. We procure raw wafers, leadframes, and molding compounds locally, reducing sub-tier logistical risks.
Our partnering assembly lines run automated die attachment, wire bonding, and molding systems. We manage production peaks for wholesale orders, scaling from small prototype batches to millions of units monthly.
Every manufacturing step is monitored via SPC (Statistical Process Control) and undergoes post-package testing, including high-temperature reverse bias (HTRB) and gate stress testing, keeping field failure rates below 10 ppm.
A reference table for design engineers selecting switches for Brushless DC (BLDC) motor drivers and Lithium-Ion BMS boards.
| Part Number | Channel Type | Drain-Source Voltage (Vdss) | Continuous Drain Current (Id) | Gate-Source Voltage (Vgs) | Max RDS(on) @ Vgs=10V | Standard Package | Primary Target Application |
|---|---|---|---|---|---|---|---|
| WSR98P06 | P-Channel | -60V | -132A | ±20V | 5.8 mΩ | DFN5X6-8L | Reverse Polarity Protection & High-side Switching |
| WSF6038 | N-Channel | 60V | 24A | ±20V | 28 mΩ | TO-252-2L | Medium-torque BLDC Drivers & Low-power Drills |
| WST2033 | Dual P-Channel | -20V | -4.5A | ±12V | 52 mΩ | TO-263-2L | Compact Drive Control & Handheld Screwdrivers |
| WSF60N06 | N-Channel | 60V | 60A | ±20V | 9.5 mΩ | TO-252-2L | Standard Cordless Hammer Drills & Circular Saws |
| WSD6023DN56 | N+P Channel | ±60V | 23A / -18A | ±20V | 22mΩ (N) / 45mΩ (P) | DFN5X6-8L | Integrated H-Bridge Bidirectional DC Motor Drives |
| WSR10N65F | N-Channel | 650V | 10A | ±30V | 0.75 Ω | TO-220F-3L | AC-DC Mains Charging Docks & Corded Power Tools |
| WSD40120DN56G | N-Channel | 40V | 120A | ±20V | 1.8 mΩ | DFN5X6-8L | High-output 18V Li-ion Brushless Impact Wrenches |
Inside our packaging, testing, and distribution centers operating in the Asia-Pacific trade hubs.
Wafer dicing and packaging are conducted in cleanroom environments to prevent particulate contamination, maintaining high gate dielectric breakdown voltages.
Automated Optical Inspection verifies wire bond integrity, leadframe alignment, and molding quality before shipping, lowering assembly-level defect rates.
Based in Hong Kong and Shenzhen, our warehouses manage inventory and shipping routes for global logistics, helping maintain stable supply lines.
Exporting power tools to major markets requires meeting strict safety, environmental, and electromagnetic standards. Olukey Industry ensures all shipped MOSFETs are compliant with RoHS 2.0, REACH, and CE regulations. Lead-free plating options are standard for all packages to support clean-energy initiatives.
We provide localized technical support through Field Application Engineers (FAEs) in key manufacturing regions. If you encounter circuit oscillation, thermal hot-spots, or EMI failures, our engineers can analyze the design on-site, offering gate resistance tuning, RC snubber layout recommendations, or driver impedance matching.
Our testing facilities can simulate surge, electrostatic discharge (ESD), and thermal cycles to identify design weak points before you submit for final UL/TUV certification, saving time and expense.
Addressing common queries from power electronics engineers and global sourcing managers regarding MOSFET performance in high-surge applications.
Starting current surges can induce voltage spikes on the gate pin via the Miller capacitor (Crss). To prevent gate oxide breakdown, keep the driver loop inductance low. Additionally, place a bidirectional TVS diode or a Zener diode (typically rated at 18V or 20V depending on Vgs limits) directly between the gate and source pins to clamp transients. Choosing a Winsok MOSFET with a low Qgd/Qgs ratio also minimizes the risk of dynamic self-turn-on.
P-channel MOSFETs simplify high-side switching because they do not require an auxiliary charge pump or bootstrap circuit to generate a gate voltage above the supply rail. The WSR98P06 P-channel MOSFET (-60V, -132A) is typically used for reverse battery protection, active braking circuits, and power supply switches, reducing component count and board space in space-constrained designs.
When a motor stalls, back-EMF drops to zero and the current is limited only by winding resistance. This high current places the MOSFET in the DC or high-pulse zone of the SOA curve. If the MCU protection does not trigger within milliseconds, the junction temperature (Tj) can exceed 175°C, leading to thermal runaway. Choosing low-RDS(on) components, such as the WSD40120DN56G, reduces conduction losses during stalls, giving the control firmware more time to shut down the system safely.
For standard packages (such as DFN5x6, TO-252, and TO-220), we maintain a rolling stock inventory, enabling shipment within 5 to 7 working days. For custom package requests, specific RDS(on) sorting, or high-volume OEM orders, lead times typically range from 4 to 6 weeks. Our logistics center in Hong Kong handles customs clearance and direct shipping to global destinations.
Contact our application engineering team in Hong Kong or Shenzhen to request free samples, obtain spice simulation models, or receive a layout review for your next-generation BLDC motor controller.
Contact Engineering & Request SamplesContinuing our selection of high-power switches, dual-die configurations, and low-RDS(on) surface mount transistors for diverse power conversion architectures.
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