SA28CA Circuit Protection

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TVS devices, also known as Transient Voltage Suppressors, are designed to protect sensitive components from unwanted electrical disturbances and help ensure safe operation of a circuit. The SA28CA is one such device, designed to protect low voltage circuits from transients and impact. It is a bi-directional diode, which can protect against transient voltage and high peaks in either positive or negative directions.

The working principle behind the SA28CA application is based on its dual nature; that is, the device will act both as a diode and as capacitor. When the overvoltage occurs, the diode section operates and shortens its exposure time, which in turn limits the energy discharged. As the peak is shortened, it is dissipated through the capacitor section, which acts as a buffering agent.

The SA28CA can be configured either as a single component or as a symmetrically arranged double module, combining two components in a single package. This double configuration is known as the Symmetrical Dynamic Voltage Leakage Suppressor (SD-VLS), which enables higher performance and reduces overall circuit size. The single configuration is usually sufficient for most applications, offering peak pulse power of up to 500W, a maximum clamping voltage of to 67V, and a maximum reverse leakage current of 1.5mA at 25℃.

The SA28CA is also a highly reliable and robust component, with an operating temperature range of -55℃ to 175℃, a surge life greater than 1 million pulses, and a high peak power rating (900W). It is suitable for use in a variety of different commercial, automotive, and consumer applications, including automotive systems, mobile phones, PDAs, routers, AC/DC adapters, LED lighting, solar cells, and more.

The SA28CA is a versatile protection device and an ideal choice for low voltage systems such as 5V circuits. Its simple and innovative design makes it perfect for use in a wide range of applications, helping to reduce system costs and improve product reliability. Its superior clamping performance and excellent surge life further makes it an ideal choice for protecting against transient voltage and high peaks.

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