Littelfuse and IXYS are brands with a strong position in the semiconductor market, which, by joining forces, offer a wide range of innovative power electronics solutions.
Fast, efficient, and versatile.
Littelfuse and IXYS are brands with a strong position in the semiconductor market, which, by joining forces, offer a wide range of innovative power electronics solutions. IXYS, known for its efficient semiconductors, has been providing power components for industries, automotive, and renewable energy for years. Meanwhile, Littelfuse, by acquiring IXYS in 2018, strengthened its market position by enriching its portfolio with advanced IXYS technologies.
Currently, the products of both brands, combined under the Littelfuse banner, provide reliable solutions in the areas of energy efficiency and power control. These include a wide range of unipolar transistors, which are an essential component of modern electronic systems.
Unipolar transistors from Littelfuse/IXYS
Unipolar transistors are field-effect transistors (FETs) that use a single type of charge carrier—either electrons or holes—to control current flow. Their operation is based on regulating the conductivity of the channel between the source and the drain under the influence of voltage applied to the gate, enabling precise current control. The most common type of these transistors is MOSFET (metal-oxide semiconductor field-effect transistor), which features fast switching, low power losses, and the ability to operate at high voltages and currents. IXYS transistor in HiPerFET™ X-Class technology.
At TME, we offer a wide range of Littelfuse/IXYS components, including MOSFET-type unipolar transistors, which are used in many electronic devices.
N-MOSFET and P-MOSFET transistors
TME offers IXYS unipolar transistors, where the substrate is doped with acceptors, and the drain and source with donors (P-MOSFET). N-MOSFET transistors, with the source and drain doped with acceptors and the substrate with donors, are also available.
Our offer also includes N-MOSFETx2 transistors, which are dual N-MOSFETs in one package with five leads, available in two variants:
with a common source,
serially mounted (the source of one is also the drain of the other).
N-MOSFETx2 transistors eliminate external connections. This simplification increases reliability and reduces the space occupied by components on the PCB. Dual NMOSFET transistor in PolarHV™ technology.
What to consider when choosing a unipolar transistor?
MOSFET transistors, like other electronic components, have many technical parameters that must be tailored to specific applications. However, the most crucial ones typically include:
maximum gate-to-source voltage (UGS) – the thin dielectric layer separating the gate from the source is sensitive to voltage spikes; exceeding it may break the dielectric and permanently damage the transistor,
maximum drain-to-source voltage (UDS) – similar to UGS, exceeding the drain-to-source voltage can destroy the transistor,
maximum drain current – the maximum current that the transistor can control without damage,
maximum power dissipation – the amount of power lost as heat generated during operation,
on-resistance – when the gate-to-source voltage (UGS) significantly exceeds the threshold voltage, the conduction channel reaches a maximum effective width. Further widening does not improve conductivity. At this stage, the transistor acts as a resistor with resistance ranging from a few ohms to milliohms. Lower resistance means lower power losses.
Industries where unipolar transistors are used
Unipolar transistors are widely used in modern technologies and systems where energy efficiency, precision, and reliability are essential. They are used in advanced control systems as well as everyday household devices. Below are industries where unipolar transistors are commonly applied:
consumer electronics manufacturing, such as televisions, audio equipment, and home appliances,
automotive – used in electric vehicles, hybrids, and advanced driver assistance systems (ADAS),
industrial automation, especially robotics, production lines, and control systems,
renewable energy – used in inverters for photovoltaic installations and wind turbine control systems,
telecommunications – in the production of data transmission and signal processing equipment,
medicine – in medical devices requiring precision and reliability.
Why choose Littelfuse/IXYS transistors?
Littelfuse and IXYS, by combining forces, deliver advanced solutions in power semiconductors. Their products are distinguished by high quality and are favored for applications requiring precise control and energy efficiency. At TME, we offer MOSFET unipolar transistors, widely used in modern electronic systems:
high efficiency – Littelfuse/IXYS MOSFET transistors are designed to minimize on-resistance, translating to higher efficiency and lower power losses,
fast switching – IXYS unipolar transistors feature fast switching, making them ideal for power electronics applications,
thermal performance – many Littelfuse/IXYS MOSFETs offer excellent thermal properties, ensuring reliable operation even in demanding environments,
reliability – IXYS focuses on durability and reliability, making their transistors suitable for demanding industrial and automotive applications,
application versatility – typical uses include power supplies, motor drives, and renewable energy systems (e.g., inverters for photovoltaic installations),
package variety – IXYS offers transistors in various package types to meet specific application needs.
Thanks to these features, Littelfuse/IXYS unipolar transistors are an excellent choice for applications where efficiency and reliability are paramount.
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