As modern power architectures demand greater power density, efficiency, and superior thermal management, traditional surface-mount packages such as D2PAK (TO-263) are reaching their physical limitations. High parasitic inductance, large footprints, and limited current capabilities restrict system scalability. Enter the TOLL (TO-Leadless) package.
TOLL is a cutting-edge package technology engineered specifically for high-current, high-efficiency applications. Characterized by a significantly reduced footprint (occupying up to 60% less board space than D2PAK) and a profile thickness under 2.3 mm, TOLL minimizes board real estate while optimizing thermal and electrical pathways. The leadless design cuts parasitic package inductance to less than 1 nH, preventing voltage spikes during high-frequency switching and protecting sensitive gate-driver circuits.
| Parameter | TOLL (TO-Leadless) | D2PAK (TO-263-7) | DFN 5x6 (Power56) |
|---|---|---|---|
| Footprint Area (mm²) | ~115 mm² (9.9 x 11.68) | ~150 mm² (10.1 x 15.0) | ~30 mm² (5.0 x 6.0) |
| Typical Thickness (mm) | 2.30 mm | 4.50 mm | 1.00 mm |
| Parasitic Inductance | < 1.0 nH | ~5.0 nH | < 1.5 nH |
| Continuous Current limit | Up to 300A - 400A | Up to 180A - 240A | Up to 100A - 150A |
| RthJC Thermal Interface | Optimal (< 0.4 K/W) | Moderate (~ 0.6 K/W) | Low (~ 1.0 K/W) |
The global semiconductor landscape is seeing an unprecedented convergence of demand for energy-efficient systems. Driven by stricter environmental regulations (such as Net-Zero compliance pathways) and the exponential growth of energy-hungry infrastructures like AI hyperscale data centers, power designers are pushed to squeeze more power out of tighter spaces.
In the Automotive sector, the transition to 48V mild hybrid architectures and high-power electric vehicle (EV) auxiliary components requires robust switches that can handle thousands of switching cycles under extreme vibration and temperature stress. In Industrial Electronics, smart motor drives, automated guided vehicles (AGVs), and high-capacity battery packs require compact, efficient power switches to minimize thermal dissipation and maximize run time. WINSOK's TOLL and TOLLA packages address these requirements directly, providing high-reliability solutions with immediate in-stock options.
High-voltage battery packs for energy storage systems (ESS) and electric two-wheelers need ultra-low RDS(on) to prevent thermal runaway. WINSOK TOLL MOSFETs act as heavy-duty solid-state protection switches, capable of conducting up to 400A continuously with minimum heat signature.
From industrial automation arms to power tools and e-bikes, brushless DC (BLDC) motors require high-frequency PWM switching. The minimized parasitic package inductance of TOLL devices ensures minimal ringing, protecting the gate driver and reducing the necessity of bulky RC snubber circuits.
Modern server farms demand high power density converters (1/4 brick and 1/8 brick layouts). Employing TOLL packaged MOSFETs allows designers of buck-boost topologies and synchronous rectification stages to run higher current densities while maintaining operating temps within thermal envelopes.
Through our parent enterprise, HONGKONG Olukey INDUSTRY CO., LIMITED, we go beyond simple component supply. By offering full PCBA circuit board solution development alongside active global general agent access, we bridge the gap between initial prototyping and high-volume mass production.
Our engineering teams regularly configure complete hardware solutions combining WINSOK MOSFETs with high-performance Cmsemicon MCUs. This integration ensures hardware-software compatibility, optimizing gate drive voltages, switching speeds, and overall system protection loops.
HONGKONG Olukey INDUSTRY CO., LIMITED is a solution provider focusing on the overall solution of electronic product components. The main products mainly include: WINSOK MOSFET, Cmsemicon MCU, PCBA circuit board solution development and other three types of product lines.
At present, the products of Olukey Industry are widely used in automotive electronics, military electronics, smart industry, new energy, smart medical care, 5G, Internet of Things, smart home, and various consumer electronics products. Relying on the advantages of global general agents of major original factories, we are based in the Asia-Pacific market. Provide customers with various advanced high-tech electronic components by using comprehensive superior services, assist manufacturers in producing high-quality products and provide comprehensive services.
We use comprehensive high-quality services to provide customers with various types of advanced high-tech electronic components, assist manufacturers in producing high-quality products and provide comprehensive services. Over the years, the company has relied on reputation to survive, adhering to the tenet of "quality first, service first", and has established good cooperative relationships with many high-tech enterprises and original manufacturers at home and abroad.
Relying on the advantages of global general agents of major original manufacturers, we are based on the Asia-Pacific market. Through active market development and effective resource integration, it has become one of the outstanding and fast-growing agents in the Asia-Pacific region. The company has many years of professional distribution experience. We use our comprehensive advantageous services to provide customers with various types of advanced high-tech electronic components, assist manufacturers in producing high-quality products and provide comprehensive services.
WINSOK MOSFET's product voltages are mainly medium and low voltage: 15V, 20V, 30V, 40V, 60V, 80V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, 650V. The main packages include DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, TO-220, etc. There are more than 600 models and more than 40 packages. Extensive coverage of medium-voltage and low-voltage MOSFET product lines on the market.
Cmsemicon MCU is a microcontroller company born in Shenzhen, with rich product types and technology research and development experience. Becoming a global high-value agent is the common goal pursued by OLUKEY Industrial employees. We adhere to the corporate values of "Pragmatism, Win-win, Service and Responsibility", continue to strengthen service quality, and aim to provide high-quality services. Work hand in hand with suppliers to jointly explore a larger market and contribute to the prosperity and development of semiconductors.
Olukey