SA24HE3/54

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TVS (transient voltage suppressor) diodes are an important element of protecting electronic devices against voltage spikes, providing high-level surge protection for a variety of applications including industrial, automotive and telecommunications. The SA24HE3/54 from Littelfuse is a single-line bi-directional TVS diode specifically designed to protect sensitive electronics from high voltage transients caused by electrostatic discharges or inductive switching. It is capable of handling large surge currents up to 24A and can be applied to both AC and DC lines with an operating voltage of up to 54V.

The SA24HE3/54 can be used in a variety of different applications, including AC line cords, telecom equipment, automotive electronics, industrial equipment, motor drives, automotive audio systems, LED drivers, medical systems, and more. The diode also has an ESD (electrostatic discharge) rating of up to 2kV contact discharge and 8kV air discharge, making it well suited for protecting against the effects of sudden voltage surges.

The SA24HE3/54 utilizes a unique “latch-off” capability to provide superior surge protection. This feature enables the TVS diode to switch quickly and efficiently from a high-impedance state to a low-impedance state in response to transient events, which is ideal for suppressing large current transients. Once the transient event has passed, the diode is able to recover quickly and reset itself without damage. This is especially helpful for applications that require a fast response time.

The SA24HE3/54 also features an integrated metal oxide varistor (MOV) for enhanced surge protection. This is a negative temperature coefficient device that helps to suppress secondary voltage spikes and helps to extend the life of the device. The diode also contains a built-in protection diode to ensure that current is only allowed to flow in the desired direction, protecting both the device and the circuit.

The device is housed in a SOT-89 package and is rated to operate across a wide temperature range of -40°C to +105°C. Its low capacitance of 20pF ensures minimal signal distortion, while its small size (2.0 x 1.6mm) makes it suitable for a variety of applications with limited space. The SA24HE3/54 is easy to install, highly reliable and provides excellent protection against transient voltage spikes.

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