SMCJ10CA-HRA

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TVS (Transient Voltage Suppressor) diodes have been used in many applications, especially in the electronics industry, to protect against overvoltage and transient voltage surges. The SMCJ10CA-HRA is a bi-directional TVS diode from the semiconductor company ON Semiconductor. It is a type of PTC (positive temperature coefficient) device which consists of a junction diode and a Zener diode in series, with a breakdown voltage of 11V. In this article, we will discuss the application field and working principle of the SMCJ10CA-HRA.

Applications

The SMCJ10CA-HRA is widely used to protect against transient voltage surges from electrostatic discharge (ESD), EFT (electrical fast transients), electrical fast transients burst, lightning, and automotive AC lines. It is also suitable for applications requiring high voltage protection, such as industrial control equipment, computers, communication systems, and CCTV cameras. The device is capable of withstanding high surge currents up to 1kA, making it well-suited for surge protection.

Working Principle

The SMCJ10CA-HRA has two diodes connected in series, the junction diode and the Zener diode, and works by dissipating and clamping the excess energy in transients. When the voltage exceeds the breakdown voltage of the Zener diode (Vz), the excess voltage is diverted through the junction diode, where it is absorbed and dissipated as heat energy. This process provides both transient protection and overvoltage protection. When the transient voltage falls below the breakdown voltage, the current flow through the Zener diode is blocked, and the device is again able to protect against overvoltage.

The SMCJ10CA-HRA also provides protection against ESD, Electrical Fast Transients (EFT), and Lightning. When exposed to these transient threats, the device is able to absorb the pulse and redirect the energy to ground. The device can also withstand a high surge current up to 1kA making it ideal for surge protection.

Conclusion

In conclusion, the SMCJ10CA-HRA is a bi-directional TVS diode from ON Semiconductor that can be used to protect against overvoltage and transient voltage surges. It is suitable for many applications including industrial equipment, computers, communication systems, and CCTV cameras. The device consists of a junction diode and a Zener diode in series, with a breakdown voltage of 11V, and is capable of withstanding high surge currents of up to 1kA. The SMCJ10CA-HRA is an effective solution for surge protection, ESD, EFT, and lightning protection.

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