STB5NK52ZD-1

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STB5NK52ZD-1 is a single field-effect transistor (FET) sourced by STMicroelectronics. This product is primarily intended for use in power management applications, including on-off control, as well as drivers and amplifiers in the automotive, consumer, industrial, and communications markets. STB5NK52ZD-1 is comprised of a vertical MOSFET with a depletion-mode. This device embodies excellent performances, among those are low off-state leakage current, good static and dynamic behaviours, and fast switching times.

Application Field

STB5NK52ZD-1 can be applied in a wide range of applications, such as power modules, Uninterruptible Power Supplies (UPS), Inverters, and Motor Drives. Typical usage scenarios are power converters, particularly for generators, actuators, pumps for agriculture and fluid management, and welding technology. In industrial automation, STB5NK52ZD-1 is a suitable choice for safety-related control systems, pumps, and valves.

Additionally, STB5NK52ZD-1 can be used to provide power switching in the consumer electronics market. This includes the television, washing machine, refrigerator, and air conditioning industries. STB5NK52ZD-1 can also be used in the telecommunications market, either as a professional repeater or in a base station.

Working Principle

STB5NK52ZD-1 operates on a depletion-mode principle. The transistor consists of three terminals, Drain, Gate and Source, that connect to the drain, gate and source of the MOSFET. The device is initially turned off with a high source voltage relative to the gate voltage. A higher gate voltage can then be applied, which causes a threshold voltage that turns the transistor on. This process is known as threshold voltage biasing.

The device works in two distinct modes: the on state and the off state. In the on state, the MOSFET allows current to flow through its drain and source. The on resistance of the MOSFET is determined by the gate voltage, drain voltage, and the amount of current being driven. In the off state, no current flows through the MOSFET, and the device is turned off. The gate voltage needs to be dropped below the threshold voltage in order to turn off the device.

The STB5NK52ZD-1 is designed to ensure high reliability, with a wide operating temperature range up to 175°C. The device features excellent noise immunity, as well as low on-state resistance for considerable current flow. Additionally, the internal body diodes provide protection against transient voltage spikes, which improves the lifetime and reliability of the transistor.

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