SA58CA-E3/54 Circuit Protection

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Transient voltage suppressors (TVS) are used to protect electrical equipment from transient events such as lightning, electrostatic discharge (ESD), and power surges. They are like miniature circuit breakers as they divert the transient current away from the protected device. TVS Diodes are one type of electrical component used as TVS. The SA58CA-E3/54 is a ultra-low capacitance TVS diode. It is one of the most popular TVS diodes used today.

Application Field

The SA58CA-E3/54 is designed for applications that are sensitive to transients and electromagnetic interference (EMI). It is suitable for use in automotive, medical, consumer, datacom, telecom, and industrial applications. The device is ideal for use in high speed data rate, automotive, and telecom systems that require protection from ESD and EFT.

Working Principle

The SA58CA-E3/54 works by redirecting transient current away from vulnerable components. It does this by absorbing the energy from the transients and redirecting it to the ground. When a transient over-voltage occurs, the excess energy is absorbed by the diode and diverted safely to ground. This provides improved over-voltage protection for the device.

The device has an ultra-low capacitance of 0.1pF which allows for fast switching speeds and improved signal integrity. It also has an ESD rating of 8kV for air, 15kV for contact, and 6kV for inductive discharges. The device can handle repetitive peak impulse currents up to 600A and peak impulse voltages up to 5kV.

The SA58CA-E3/54 is a characteristically fast switching device, with an on-state voltage of 1.5V at 1A. Its low turn-on and turn-off times and low capacitance make it an ideal choice for protecting sensitive circuits from transient voltage spikes. The device is voltage-dependent and polarity-agnostic, meaning it can be used with either AC or DC circuits.

Conclusion

The SA58CA-E3/54 is a high performance ultra-low capacitance transient voltage suppressor diode. It is an ideal solution for electronic circuits that require protection from transient voltages and electromagnetic interference. It provides an effective alternative to traditional over-voltage protection components and can provide fast switching speeds and improved signal integrity. The device is suitable for use in automotive, medical, consumer, datacom, telecom, and industrial applications.

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