SMCJ22C

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SMCJ22C is a TVS diode from bi-directional ESD protection. It is an ideal solution for data line protection in USB, portable electronic devices, and hand-held communication equipment. It protects against both electrostatic discharge (ESD) and electrical fast transient (EFT) and has an operating voltage (Standoff Voltage) of 22V.

Application Fields

SMCJ22C protection devices provide a high performance, cost-effective solution for a variety of low-voltage data lines. They offer protection against static electricity and against transient voltage spikes on power and signal lines. Typical applications of SMCJ22C include protection for PC/notebook USB ports, home appliances, automotive systems, personal portable devices, cell phones, and audio/video equipment.

Working Principle

A TVS diode is a three-terminal, surface-mount semiconductor device that is designed to protect sensitive electronic components from transient voltage spikes. The two end terminals of a TVS diode are an anode and a cathode, while the third terminal is a gate. When a transient voltage spike is applied to the anode and cathode terminals, the gate triggers the diode into a low impedance, non-linear state, then shunts the surge current away from the device under protection.

SMCJ22C protection devices have an operating voltage, also known as a standoff voltage. This voltage is the minimum voltage required for the TVS diode to conduct current without damage. The operating voltage of SMCJ22C is 22 volts. It also has an ESD protection of up to 19kV or 12kV for human body model.

When operating, SMCJ22C protection devices are bi-directional, meaning they will protect against both ESD and EFT protection, allowing it to protect against both high and low voltage transients. The diode also has an ultra-low capacitance of 4.5pF, ensuring that maximum signal integrity is preserved and there is minimal signal loss. Furthermore, the SMCJ22C is an ultra-compact, low profile package (SMC package) that allows for a higher density of components and provides easier installation in confined spaces.

In conclusion, SMCJ22C is an ideal solution for data line protection in USB, portable electronic devices and hand-held communication equipment. The diode has an operating voltage of 22V, an ESD protection of up to 12kV or 19kV and an ultra-low capacitance of 4.5pF. Its bi-directional design makes it ideal for protecting devices from both high and low voltage transients. Its compact, low-profile package allows for higher component densities and easier installation in confined spaces.

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