SMDA03C-5/TR7

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The SMDA03C-5/TR7 component is a member of the TVS diode family. TVSs or Transient Voltage Suppressors, are semiconductor diodes that help protect voltage sensitive components from power surges.

The SMDA03C-5/TR7 component is a low-capacitance, unidirectional TVS device designed to protect high speed data lines from voltage transients caused by lightning or other electrical disturbances. The component enables systems to adhere to industry standards for ESD and EFT protection.

The component is an bidirectional, low capacitance transient voltage suppressor diode, optimized for protecting high-speed data lines, such as lines used in USB 3.0 and HDMI 2.0. Its operating voltage range is from 8V to 18V, with a maximum pulse power of 1500W 8/20μs. It can handle up to 40A pulse current carrying capabilities.

The working principle of the SMDA03C-5/TR7 is based on the formation of a low-capacitance transient voltage-clamping diode. The component’s PN junction diode starts conducting when the peak voltage of a transient (above its nominal voltage) is higher than the PN junction breakdown voltage. As the current starts flowing, a temperature rise occurs in the junction due to the voltage clamped by the PN junction. When the temperature reaches a certain level, the component triggers, and will therefore activate the device’s protection circuit, suppressing the transient and preventing damage to the equipment.

In conclusion, the SMDA03C-5/TR7 is a low-capacitance, unidirectional TVS diode designed for data line protection against transient voltage. The component is also optimized for protecting high-speed data lines, such as lines used in USB 3.0 and HDMI 2.0. Its working principle is based on a low-capacitance transient voltage-clamping diode formed by its PN junction diode, which will help protect voltage sensitive components from power surges.

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