Explore our high-demand medium and low voltage configurations, optimized for controller stability and advanced BMS architectures.
HONGKONG Olukey INDUSTRY CO., LIMITED is an industry-leading integrated solution provider focusing on the overall architecture of advanced electronic product components. Our three core product lines include market-proven WINSOK MOSFETs, Cmsemicon MCUs, and bespoke PCBA circuit board development solutions.
By leveraging exclusive general agent relationships with original wafer fabs and packaging houses, we are firmly positioned in the Asia-Pacific market. We help tier-1 manufacturers and global distributors optimize their designs with superior components, ensuring robust supply chains, extreme thermal stability, and cost efficiency.
"Our corporate values are anchored in Pragmatism, Win-win, Service, and Responsibility. Together with our global partners, we power the semiconductor revolution in e-mobility."
How our silicon solutions address the engineering bottlenecks of modern electric mobility.
Modern Field-Oriented Control (FOC) controllers demand high switching frequencies and low gate charge (Qg) to eliminate switching losses. WINSOK’s optimized SGT MOSFETs deliver clean waveforms and high thermal overhead, reducing energy loss in high-power hub motors.
Battery Management Systems (BMS) require high current tolerances and extremely low Rds(on) to prevent thermal runaway. WINSOK’s multi-channel N-Channel and P-Channel devices protect multi-cell lithium batteries against overcharge, short circuit, and massive transient currents.
By co-designing with Cmsemicon microcontrollers, we provide a pre-validated system architecture. This vertical integration cuts R&D cycles in half for electric bicycles, kick-scooters, and micro-mobility transport fleets worldwide.
Driving continuous improvement in power density, material sciences, and efficiency indices.
To meet the rising power needs of global e-mobility (escalating from standard 36V to high-performance 72V designs), WINSOK has transitioned its core power line to advanced Split-Gate Trench (SGT) technology. This significantly lowers the Figure of Merit (FOM) (Rds(on) × Qg) by up to 35% compared to conventional planar topologies.
Our R&D roadmap targets the implementation of thin-wafer back-metallization and heavy-source copper clip packaging. These advancements reduce parasitic inductance, leading to clean gate signal switching and zero-voltage turn-off behaviors, which are essential for automotive-grade reliability.
Additionally, we are exploring wide bandgap integration options to future-proof smart urban transport systems.
Unifying fabrication, test automation, and logistics to eliminate stock risks.
Fully automated clean rooms ensure sub-micron alignment accuracy for enhanced chip thermal performance.
100% avalanche energy (UIS) testing eliminates early field failures in harsh controller operations.
Strategic warehousing in Hong Kong and Shenzhen minimizes global shipment lead times for wholesale distributors.
With a permanent stock index of key e-bike MOSFET models (such as the DFN5x6-8 and TO-252 families), we mitigate the impact of wafer fab cycle fluctuations. For wholesale distributors and OEMs, this translates to stable pricing, predictable scheduling, and a total elimination of supply chain bottlenecks.
We align our services with your technical, commercial, and logistical criteria.
At HONGKONG Olukey INDUSTRY CO., LIMITED, we understand that global procurement teams prioritize quality consistency, regulatory compliance, and rapid prototyping.
Global outreach backed by rigorous international certifications and technical support.
Our partners' wafer fab facilities are certified to ISO9001 and IATF16949 automotive quality standards. Every MOSFET is fully compliant with RoHS and REACH directives, ensuring smooth clearance in highly regulated markets like Europe and North America.
We support design-in activities directly through regional Field Application Engineering (FAE) contacts. We provide fast thermal modeling, gate drive design reviews, and layout optimizations to help you secure first-pass EMI compliance.
We customize shipping profiles (VMI, buffer stock commitments, bonded warehouse drop-shipping) to align with lean manufacturing schedules. This minimizes overhead costs and inventory volatility for high-capacity assembly plants.
As an authorized agent of WINSOK, we cover a comprehensive catalog of medium and low-voltage products. Our inventory ranges from 15V, 20V, 30V, 40V, 60V, 80V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, to 650V models.
These silicon solutions are housed in optimized thermal packages, including DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, and TO-220. With over 600 active models, we provide drop-in replacements for standard components to support smooth, hassle-free upgrades.
Expert technical answers addressing common design challenges in micro-mobility traction and battery systems.
For a 48V battery pack, the peak voltage during charging can reach up to 54.6V. Due to inductive spikes (V = L * di/dt) generated by stray motor lead inductance during switching, a safety margin of at least 1.5x to 2x is highly recommended. Consequently, 75V to 100V rated MOSFETs (such as WINSOK’s 80V or 100V N-Channel DFN5X6-8 or TO-263 packages) are the industry standard to ensure long-term reliability and protect against avalanche damage.
While the TO-220 is a classic package favored for its heat-sink mountability, the DFN5x6-8 package offers superior performance for modern space-constrained designs. It has a significantly lower package parasitic inductance and resistance. Additionally, its bottom-side exposed pad allows for direct heat dissipation into the PCB inner copper planes, enabling compact, automated SMD production lines and cleaner EMI profiles.
Quality control is embedded directly into our supply chain. Every batch of WINSOK MOSFETs undergoes rigorous post-fabrication screenings, including wafer-level parametric verification, static Rds(on) testing, and automated optical inspections (AOI). For industrial-grade components, we also perform dynamic high-temperature reverse bias (HTRB) and high-temperature gate bias (HTGB) life tests to safeguard against early component failures in the field.
Yes. Our engineering team maintains a comprehensive parametric database that maps our products directly to competitors' catalog numbers. In most cases, we can identify drop-in replacements with matching gate-drive properties, thermal profiles, and footprint layouts. This helps keep production lines moving and reduces design-in cycles when other brands announce product phase-outs or face long lead times.
Registered wholesale distributors, OEMs, and design firms can apply for free samples through our product detail pages or by contacting our sales department directly. Once we verify your system requirements (including working currents, operating voltages, and target annual volume), our engineering team will dispatch sample packs for evaluation, along with technical datasheets and layout design guidelines.
Cmsemicon MCUs are optimized for motor control algorithms like FOC, providing hardware-accelerated math blocks for trigonometric calculations. When combined with WINSOK’s fast-switching MOSFETs, it allows the controller to adjust gate drive parameters dynamically in real time. This co-design minimizes commutation ripple and reduces thermal stress, extending both battery life and total vehicle range.
Select from our volume-ready MOSFET product lines. Order today to receive factory-backed guarantees and rapid global dispatch.
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