High-efficiency, low R_DS(on) switching nodes designed for advanced battery management systems (BMS) and protection circuit modules (PCM).
Technical considerations in high-efficiency, multi-cell battery systems and current-loop safety architecture.
For battery protection circuits, transient overcurrent conditions, such as short circuits or sudden motor stalls in e-bikes, subject MOSFETs to high current and voltage stresses. Winsok's SGT (Shielded Gate Trench) technology optimizes the SOA, enabling the devices to withstand high transient energy peaks without entering thermal runaway.
Reducing conductive losses in lithium-ion packs is crucial for extending system battery life and managing thermal envelopes. By achieving sub-milliohm values in packages like DFN5x6-8L and TO-220, our range helps battery pack designers maximize current carrying capacities while minimizing heat sinks.
Highly capacitive loads can generate immense in-rush current during initial connection phases. Built-in avalanche ruggedness (Eas rating verification) ensures that high voltage spikes caused by stray inductances do not degrade the gate oxide layer or silicon structures over time.
HONGKONG Olukey INDUSTRY CO., LIMITED is an established global solution provider focusing on the overall engineering and delivery of premium electronic component systems. Our product portfolio is structured across three core competencies: WINSOK MOSFETs, Cmsemicon MCUs, and end-to-end PCBA circuit board solutions.
Our operational framework bridges advanced silicon manufacture with practical design expertise. Currently, Olukey’s products serve critical functions in sectors such as automotive systems, military electronics, smart industrial automation, new energy infrastructure, intelligent medical equipment, 5G networking nodes, IoT devices, smart home appliances, and consumer electronics.
By leveraging global general agency relationships with original fabs, we provide the Asia-Pacific and international markets with high-tech component solutions. Our goal is to assist global OEMs/ODMs in engineering robust products by maintaining extensive stock reserves, delivering detailed technical documentation, and offering application engineer (AE) consulting services.
Mitigating supply-chain vulnerabilities through certified drop-in semiconductor replacement strategies.
Modern global hardware production requires high resiliency. Relying on a single semiconductor source exposes supply chains to geopolitics, localized outages, and shipping backlogs. Olukey Industry supports global procurement teams by providing verified cross-reference alternatives for standard industrial parts from manufacturers like Alpha & Omega (AOS), ON Semiconductor, Infineon, Nexperia, and STMicroelectronics.
Our components meet strict quality standards, offering equivalent mechanical footprints (DFN5x6, TO-252, TO-263, SOP-8, TO-220) and matching electrical parameters to allow for drop-in PCB integration.
High-quality packaging, automated testing lines, and rigorous wafer-level validation processes.
Olukey leverages strategic partnerships with semiconductor foundries across the Asia-Pacific region. This allows us to secure inventory allocations and maintain production capacity during supply crunches, helping to prevent production delays for our partners.
Every shipment is subjected to strict quality control, including electrical parameters testing, visual package sorting, and solderability tests. We support traceability down to the wafer lot level, ensuring reliability for industrial and automotive applications.
By pairing Winsok Power MOSFETs with Cmsemicon MCUs, we provide integrated power stage and control loop designs. This approach simplifies component sourcing and helps engineers minimize design risk.
Proven engineering deployments of our power semiconductor line across commercial and industrial hardware segments.
Integrating AEC-Q101 compliant packaging to secure battery thermal states and supply transient protection for cooling fans, body electronics, and vehicle sensor grids.
Deploying arrays of TO-220 and TO-263 packages in solar micro-inverters and telecom backup systems, optimizing round-trip conversion efficiency.
Replacing legacy packages in CNC drives, robotic joints, and high-frequency power tools with SGT N-channel elements to reduce dynamic switching losses.
A representative list of our standard power MOSFET product lines for comparative reference analysis.
| Part Number | Polarity / Channel | Drain-Source Voltage (Vdss) | Continuous Drain Current (Id) | Package Package | Target Replacement Reference Brands |
|---|---|---|---|---|---|
| WSD3042DN56 | N-Channel | 30V | 40A | DFN5X6-8L | AOS AON6512, ON Semi FDMS7692 |
| WSC80P03 | P-Channel | -30V | -75A | TO-251-3L | Infineon IPD90P03, ST STD95P3LLH6 |
| WSD90P06DN56 | P-Channel | -60V | -90A | DFN5X6-8L | AOS AON6403, Nexperia BUK7Y38-60E |
| WSF38P10 | P-Channel | -100V | -34A | TO-252-2L | ST STD35P10F6, ON Semi FDD18N20LZ |
| WSP6044 | N-Channel | 60V | 10A | SOP-8L | Nexperia SO8, AOS AO4420 |
| WSK150N15 | N-Channel | 150V | 150A | TO-263-2L | Infineon IPB039N15N3G, STB180N15F7 |
| WSD3075DN56 | N-Channel | 30V | 75A | DFN5X6-8L | AOS AON6220, ON Semi FDMS86101 |
| WSR140N12 | N-Channel | 120V | 140A | TO-220-3L | Infineon IPP041N12N3G, STP160N12F7 |
Olukey manufactures under quality management systems that conform to international standards. Our components comply with the European Union’s RoHS Directive 2011/65/EU and its amendments, as well as REACH regulations regarding hazardous chemicals. These compliance controls help support safe integration into consumer electronics and medical applications.
Our Quality Assurance protocols verify that all semiconductor devices are free from lead (Pb-free), mercury, cadmium, hexavalent chromium, and brominated flame retardants. We also support green manufacturing policies by working toward conflict-free supply chains for tin, tantalum, tungsten, and gold.
Additionally, our application testing laboratory offers customized validation reports, including cross-sectional solder joint evaluation, high-temperature reverse bias (HTRB) testing, and thermal resistance calibration, verifying component reliability for harsh environments.
Transitioning toward low-profile packaging and next-generation power density metrics.
Our ongoing R&D efforts are focused on shrinking cell pitch within our Silicon SGT processes. This structural optimization helps reduce gate-to-drain capacitance (Cgd), enabling faster switching speeds and reduced switching power losses.
To support ultra-compact consumer electronics like smart wearables and thin battery modules, Winsok is expanding its lineup of Chip-Scale Packages. These packages minimize internal wire resistance, helping to reduce dynamic loss factors.
We are exploring integration topologies that combine traditional Silicon MOSFET architectures with emerging Wide Bandgap technologies. This work supports applications requiring high-voltage operation and elevated thermal thresholds.
Answers to common engineering questions regarding the specification, selection, and substitution of battery protection MOSFETs.
Olukey Industry provides logistics and warehousing services to help secure your supply chain. We maintain inventory reserves for our standard catalog items at regional distribution centers in Hong Kong and Shenzhen, allowing for quick dispatch to global production sites.
We offer customized supply solutions, including buffer stock arrangements, long-term forecasts, and scheduled deliveries. These services help protect our customers from semiconductor market volatility, ensuring production lines remain active.
Select standard packages and dual-channel configurations for specialized electronics designs.
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