BUK7K18-40EX

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BUK7K18-40EX is a transistor array that uses high-voltage N-channel power MOS field effect transistors (MOSFETs) in a compact package. It is specifically designed for automotive, industrial, and commercial applications that require temperature operation from -55°C to +150°C. The device is ideal for power management applications where extremely small size, low on-resistance, wide temperature range and high current capability are key requirements.

The BUK7K18-40EX is composed of two cascode-connected N-channel MOSFETs in a 4-pin die-casting package. The two MOSFETs are configured in what is known as a Darlington pair configuration with two common gates, a common source connection and two separate drain connections. This provides greater current handling and voltage control than a single MOSFET. Additionally, the pin configuration is designed to provide ease of use in design with excellent thermal contact and actuation characteristics.

The BUK7K18-40EX is an ideal solution for automotive powertrain applications due to its wide temperature range and its capability to handle large currents. It can be used for electric power steering, traction control, battery charging and fuel management systems. Additionally, it can be used in industrial AC to DC converters and power supplies as well as commercial lighting applications. The device also provides low on-resistance at high voltages, excellent thermal contact and no activation or deactivation delays in operation.

The working principle of the BUK7K18-40EX revolves around its MOSFETs. MOSFETs are voltage controlled semiconductor devices that utilize electric fields to switch the current between the source and drain terminals. The two cascaded MOSFETs of this device are configured in Darlington pair configuration. This means that the second MOSFET acts as an amplifier, amplifying the signal controlled by the first MOSFET. Thus it provides greater current control, lower on-resistance and greater speed as compared to single MOSFETs.

The low on-resistance of the BUK7K18-40EX is also due to its MOSFETs, which have much lower on-resistance than other types of power transistors. Additionally, the wide temperature range and high current-handling capabilities of the device are created by its robust die-casting package and low thermal resistance design. Thus, the BUK7K18-40EX provides a unique solution for various power management applications requiring temperature operation, high current handling and low on-resistance.

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