USBQ50424E3/TR7

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TVS diodes, commonly known as Transient Voltage Suppressors (TVSs), are devices designed to protect semiconductor circuits from damage due to electrostatic discharge (ESD) or other electrical transients. USBQ50424E3/TR7 is a monolithic TVS diode mainly designed to protect load-side circuits from over-voltage transients, such as ESD. The device can handle transient voltages up to 24V and is designed with low on-state resistance for excellent protection against high-speed transient signals up to 10MHz.

The design of USBQ50424E3/TR7 is based on a thin-film diode integrated with an ESD protection circuit. The diode’s ESD protection circuit consists of a Z-Coupler circuit, which provides up to 24V of protection to the downstream circuits. The Z-Coupler circuit employs an LC snubber circuit that operates at a maximum frequency of 10MHz. The ESD protection circuit also includes an advanced clamping network that is designed to provide high surge current capability.

USBQ50424E3/TR7 is designed for use in high-speed interfaces, such as USB 2.0 and FireWire systems. It is ideal for protecting downstream components from over-voltage transient signals such as ESD, lightning surges, and lamp-induced over-voltages. It is also suitable for applications where an IEC ESD immunity of ±25kV contact discharge is required.

USBQ50424E3/TR7 can be used in a variety of applications, including telecommunications, computing, consumer electronics, military, and aerospace. It is designed to provide reliable and robust protection against ESD, lightning, and other electro-static over-voltage events. It also provides excellent transient signal protection over a wide frequency range up to 10MHz.

The working principle of USBQ50424E3/TR7 is based on an active clamp circuit. The circuit consists of multiple active components, such as a Z-Coupler snubber circuit that works at a maximum frequency of 10MHz, and a multi-layer clamping network. These components allow the TVS diode to provide an over-voltage transient protection by quickly responding to transient signals and clamping them down to safe values before they reach the downstream components.

When the input voltage exceeds the breakdown voltage of the TVS diode, the Z-Coupler circuit is activated and it begins to conduct current. This current is then passed through the multi-layer clamping network, where it is attenuated and clamped to a safe level. The dissipated energy is then dissipated in the form of heat. By providing this active clamping circuit, USBQ50424E3/TR7 is able to effectively absorb and dissipate the energy of the transient signals before they reach downstream components.

In summary, USBQ50424E3/TR7 is a monolithic TVS diode designed to provide reliable over-voltage transient protection, with low on-state resistance, for high frequency signals up to 10MHz. It is suitable for use in a variety of applications, such as telecommunications, computing, consumer electronics, military, and aerospace. It is designed with an active clamp circuit that quickly responds to transient signals and attenuates them to safe values before they reach the downstream components. Its design and working principle make USBQ50424E3/TR7 an ideal TVS diode for use in high performance systems requiring reliable transient protection.

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