SA16CA-E3/54 Circuit Protection

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TVS (Transient Voltage Suppressors) - Diodes offer protection against transient voltage spikes, ESD (Electro-Static Discharge), EFT (Electric Fast Transients) and lightning impulse events, and are an important part of any electronic system. The SA16CA-E3/54, produced by Littelfuse, is a unidirectional 600W ultra-low capacitance transient voltage suppression (TVS) device designed to protect high speed data interfaces. It offers a maximum off-state breakdown voltage of 26V, maximum on-state voltage of 15V, and an operating junction temperature range of -40°C to +125°C. In this article, we will look at the application fields and working principles of the SA16CA-E3/54.

Application Fields

The SA-16CA-E3/54 is designed for use in high speed data lines and related applications including USB2 and USB3, Serial ATA (SATA), SCSI, HDMI, Display Port, 400G Ethernet, and LAN. Its impressive power rating of 600W coupled with a low capacitance of 0.17pF, makes the SA16C-E3/54 an ideal choice for data interface protection. The low capacitance ensures minimal signal degradation, making it an ideal solution for applications where signal integrity is of paramount importance.

Its impressive surge ratings of ESD (25kV HBM) and Lightning (20kA) make it suitable for a variety of industrial and automotive applications. It also has a wide operating temperature range making it suitable for the harshest of environments.

Working Principle

The SA16CA-E3/54 is a unidirectional device, meaning it provides protection against high voltage transients in a single direction. In the "Off" state or "Non-Conducting" state, the device is in its most undisturbed state and the reverse breakdown voltage of 26V (max) allows the device to prevent higher voltage transients from entering the system.

In the "On" state or "Conducting" state, the forward voltage drop is 15V maximum, allowing the device to ensure a safe path for transient current to be quickly redistributed to ground. The device is designed to clamp and limit the voltage to the specified forward voltage rating, protecting the system from damage.

Conclusion

The SA16CA-E3/54 from Littelfuse is a reliable and cost-effective solution for protecting high speed data interfaces from transients. Its impressive power rating of 600W and ultra-low capacitance of 0.17pF make it an ideal solution for applications where signal integrity is of paramount importance. Its wide operating temperature range makes it suitable for use in a variety of industrial and automotive applications.

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