Industrial grade MOSFETs configured for optimal switching speed, low gate charge, and standard footprints in UPS converter circuits.
Uninterruptible Power Supplies (UPS) form the backbone of global digital infrastructure, guaranteeing clean, continuous power to data centers, medical devices, and telecom base stations. To minimize conversion losses during double-conversion (AC-DC-AC) processes, system designers must deploy high-efficiency power semiconductors. This is where WINSOK MOSFETs serve as direct replacement, drop-in alternatives, and high-performance equivalents to major legacy brands like AOS, ON Semiconductor, and Infineon.
By optimizing the planar and trench designs across various packaging options (such as TO-220, DFN5x6-8L, TO-263, and TOLL), Olukey Industry offers global engineers a path to mitigate supply chain disruptions. With direct PIN-to-PIN compatibility, these components enable seamless cross-referencing without modifying board layouts.
Establishing a successful cross-reference for power transistors involves matching key parameters under dynamic loads. A matching footprint is insufficient; power designs require verification of thermal impedance and gate drive metrics.
If the replacement MOSFET has a higher Qg, the gate driver may overheat or fail to switch fast enough, leading to increased transition losses and thermal runaway in high-frequency UPS topologies.
Drain-source on-resistance rises with junction temperature. WINSOK utilizes specialized silicon doping profiles to minimize the steepness of this curve, ensuring reliable operation at 125°C.
Transitioning heat from the semiconductor die to the heatsink is essential. Packages like DFN5X6-8L and TOLL-8L feature exposed thermal pads, matching thermal profiles of major industry counterparts.
HONGKONG Olukey INDUSTRY CO., LIMITED is an integrated solution provider specializing in electronic product component distribution and design. The company centers its operations on three primary divisions: WINSOK MOSFETs, Cmsemicon MCUs, and customized PCBA circuit board solutions.
Operating out of key logistics and technical hubs in the Asia-Pacific region, Olukey provides high-tech components across diverse verticals, including automotive electronics, defense, industrial automation, medical equipment, and consumer IoT. By maintaining strong partnerships with original wafer foundries and packaging facilities, we ensure stable delivery pipelines, competitive lead times, and comprehensive support for global tier-1 manufacturers.
The transition toward smart grids, edge computing, and hybrid renewable energy storage demands specialized power distribution designs that address regional grid qualities and environmental constraints.
Focuses on double-conversion online UPS systems operating at high switching frequencies. The application requires TOLL-8L packaged MOSFETs (such as WSM320N04G) to handle high current density while minimizing the footprint on the server power board.
Requires bidirectional converters with high avalanche energy (Eas) ratings. System designs utilize medium-voltage MOSFETs (e.g., WSR160N20 or WSK200N08) to absorb grid-inductive feedback loops and manage voltage spikes.
Exposed to extreme temperature swings and high humidity. Using high-reliability DFN5X6-8L and TO-220 packages ensures long service life in harsh environments, reducing maintenance costs for remote installations.
Olukey Industry coordinates manufacturing with localized wafer foundries and assembly lines in Shenzhen and surrounding high-tech hubs, ensuring a secure and efficient supply chain. This configuration provides several key advantages:
The power electronics industry is transitioning toward higher switching frequencies and smaller footprints. WINSOK is advancing its technology through targeted silicon and packaging innovations:
Split-Gate Trench (SGT) Technology: Modern SGT processes reduce RDS(on) and total gate charge (Qg) simultaneously, overcoming the standard physical limits of planar silicon. This enables high switching frequencies (100kHz - 300kHz) in high-density UPS systems.
Wide-Bandgap Integration: Our R&D is focused on silicon-matching driver ICs designed for next-generation GaN and SiC topologies, enabling power density configurations beyond 98% efficiency.
We perform rigorous reliability testing to ensure our parts meet industrial requirements, serving as drop-in replacements for mission-critical UPS systems.
Devices undergo testing under maximum gate voltage limits at 150°C to verify gate oxide integrity and prevent premature insulation breakdown.
MOSFETs are biased at 80% to 100% of their rated breakdown voltage to confirm the stability of junction passivation layers over time.
All WINSOK products are fully compliant with RoHS and REACH standards. We implement ISO 9001 and IATF 16949-certified quality systems throughout our production processes.
Expert answers addressing the technical details of MOSFET substitution, thermal matching, and sampling logistics.
A suitable cross-reference must match the package outline, pinout configuration, and key electrical parameters: Drain-Source Voltage (Vdss), Continuous Drain Current (Id), Gate-Source Threshold Voltage (Vgs(th)), and Gate Charge (Qg). Additionally, the on-resistance (RDS(on)) must be equal to or lower than the original part to prevent overheating.
You can request samples by selecting the product in our catalog and clicking the "Request Free Sample" link. Our application engineers will contact you to verify your schematic parameters, ensuring the selected MOSFET matches your design requirements.
Yes. Most WINSOK parts are designed as PIN-to-PIN equivalents to common industry standards. Our cross-reference databases support substitutions for brands like AOS, ON Semi, and Infineon across low to medium-voltage applications.
Our manufacturing and testing processes comply with standard industrial quality criteria. Devices undergo HTGB, HTRB, ESD evaluations, and multi-point parameter verification. Selected lines are qualified under automotive AEC-Q101 standards.
Olukey Industry maintains strategic raw material reserves and keeps ready-to-package wafers in stock. This buffer system helps insulate customers from sudden packaging lead time extensions, ensuring steady supply chains for high-volume orders.
Advanced MOSFET configurations and integrated modules for high-efficiency UPS power control and wireless charging circuits.
Partner with HONGKONG Olukey INDUSTRY CO., LIMITED. Let our team of application engineers assist you with parameter matching, schematic reviews, and direct drop-in evaluations to ensure your system performance.
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