Discover our primary selection of N-Channel, P-Channel, Dual MOSFETs, and RISC microcontrollers optimized for BMS, motor controls, and battery protection circuits.
HONGKONG Olukey Industry Co., Limited is an elite end-to-end solution provider focusing on the comprehensive architecture of electronic product components. With decades of accumulated expertise in semiconductor technology, our core competencies span across three vital product verticals: high-efficiency WINSOK MOSFETs, highly integrated Cmsemicon MCUs, and custom PCBA circuit board solutions design.
Currently, Olukey Industry's advanced solutions are widely deployed across high-precision and high-reliability markets including automotive electronics, military-grade systems, smart industrial automation, new energy battery storage, smart medical equipment, 5G communications, IoT infrastructure, smart home devices, and top-tier consumer electronics. By leveraging the strategic advantages of being a global general agent for major original semiconductor fabrication plants, we have built a powerful footprint based in the Asia-Pacific region serving enterprises globally.
We utilize comprehensive high-quality services to provide customers with advanced, high-tech electronic components, assisting manufacturers in producing high-reliability products with zero-tolerance for defects.
Over the years, our company has relied on reputation to survive. Adhering to the tenet of "Quality First, Service First", we have established rock-solid cooperative relationships with major domestic and international original manufacturers.
WINSOK MOSFET's product voltages span medium and low voltages: 15V, 20V, 30V, 40V, 60V, 80V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, and 650V, providing comprehensive market coverage.
By pairing Winsok MOSFETs with high-efficiency Cmsemicon MCUs and custom PCBAs, we deliver turnkey designs that dramatically accelerate time-to-market for smart BMS and power electronics.
Step inside our high-capacity semiconductor warehousing, testing centers, and automated manufacturing lines that guarantee continuous supply and zero-defect execution.
As a leading Asia-Pacific semiconductor distributor, our warehousing operations in Hong Kong and Shenzhen are equipped with strict temperature and humidity controls conforming to MSL standards. This maintains the structural integrity of sensitive packaging designs such as DFN5X6-8, TOLLA-8L, and SOT-23, preventing delamination and solder defects in high-density lithium battery PCB assemblies.
Lithium battery management systems (BMS) require switching devices with low conduction loss, reliable transient handling, and high-frequency safety margins. This breakdown analyzes how WINSOK MOSFETs achieve these specifications.
As current flows through a MOSFET, power dissipation is calculated as P = I² × RDS(ON). In high-current battery packs (exceeding 100A), even milliohm deviations lead to heat generation that threatens the battery cell stability. WINSOK’s trench-gate technology controls RDS(ON) growth at elevated temperatures. For example, our WSM300N04G N-Channel 40V 300A TOLLA-8L features an RDS(ON) measured down to micro-ohms, keeping temperatures low during high continuous discharge.
During a sudden short-circuit event, the BMS must disconnect the circuit within microseconds. High-speed cutoff triggers a massive voltage spike across the MOSFET due to parasitic loop inductance (V = L × di/dt). Without adequate single-pulse avalanche rating (EAS), the silicon will degrade. WINSOK MOSFETs are subjected to 100% EAS testing, ensuring they withstand inductive energy kickbacks without requiring oversized external snubber networks.
Selecting the appropriate package is as critical as electrical specifications. The table below represents standard offerings distributed by HONGKONG Olukey Industry, detailing target lithium battery application voltages:
| Package Type | Voltage Ranges Available | Ideal Continuous Current | Primary BMS / Power Application Scene |
|---|---|---|---|
| TOLLA-8L / TO-263-2L | 30V - 100V | 150A - 300A | Electric Vehicle (EV) Traction Inverters, Heavy-duty E-Motorcycles, Industrial ESS Protection Boards |
| DFN5X6-8L / DFN3X3-8 | 20V - 150V | 40A - 120A | Power Tools, Cordless Vacuum Cleaners, E-Bikes, Smart Home Robotic Appliances |
| SOP-8L / SOT-23 | 15V - 60V | 3A - 15A | Smartphone Battery Packs, Wearable Medical Trackers, Handheld IoT Sensors |
| TO-220 / TO-252 | 60V - 650V | 20A - 110A | Active Clamp Flyback Circuits, High-voltage Solar Chargers, Telecom Rectifiers |
As dynamic regulatory environments reshape global electronics manufacturing, Olukey Industry guarantees compliance and supply chain continuity.
Global buyers need more than just components; they require validation. Olukey Industry provides full FAE (Field Application Engineering) support. We help European and North American engineers replace hard-to-source components from legacy Western brands with drop-in Winsok MOSFET equivalents. We match board footprints, transient thermal impedances, and gate charge profiles to secure regulatory re-approvals.
By analyzing the Safe Operating Area (SOA) curves of high-drain models like the WSD80100DN56 (80V 100A DFN5x6-8), we ensure compliance with certifications such as UL 2580 (Batteries for Electric Vehicles) and IEC 62133 (Safety of Portable Lithium Batteries).
Our strategic headquarters in Hong Kong combined with testing facilities in Shenzhen, China allows us to leverage regional supply chain efficiencies. We aggregate semiconductor wafers from leading domestic foundries, apply packaging technologies, and coordinate international shipping through Hong Kong.
This dual-location layout minimizes supply disruptions caused by localized custom protocols, offering direct FOB/CIF channels, real-time tracking, and API-driven warehouse inventory updates for our wholesale clients.
Exploring new battery chemistries and power densities requires innovative semiconductor switching designs.
In medical wearables and smartwatches, standby battery life is critical. Standard power MOSFETs exhibit gate-source leakage currents that drain batteries over time. The WST6003 (P-Ch -20V -0.35A SOT-523-3L) features low gate leakage (IGSS), preserving battery capacity during standby modes.
Industrial drills and lawnmowers experience frequent motor stalls, drawing currents up to 5 times nominal levels. Selecting N-channel units with high current limits, like the WSD30160DN56 (30V 120A), ensures the BMS handles these transient currents without entering thermal runaway.
The market is transitioning from bulky TO-220 and TO-263 packages to TOLLA (Thin Outline Large Leadless). TOLLA-8L decreases package thickness by 60% and footprint by 30%, while offering larger contact areas for lower junction-to-case thermal resistance (RthJC).
Figure: Automated SMT line producing high-reliability protection boards (PCBA) configured with Winsok MOSFETs and Cmsemicon microcontrollers.
Browse our selection of medium-to-high voltage components, logic-level logic switches, and RISC microcontrollers available for immediate wholesale distribution.
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