30KPA144A

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TVS - Diodes are electronic components used to protect other components from electrical overstress and transients of high voltages. They are designed to limit the voltage applied across a circuit, eventually reduce the energy of a high-energy pulse to a manageable level, or protect components from a surge of electrical current flowing through the circuit. The 30KPA144A is a common TVS - Diode designed for electrostatic discharge (ESD) protection. It is a unidirectional device designed to protect up to four lines from the effects of ESD. This application brief covers the 30KPA144A’s application field and working principle.

Application: The 30KPA144A is used for ESD protection in a variety of applications, including electronic equipment, automotive systems, industrial systems, and consumer applications. It is suitable for protecting data lines such as USB, LVDS, I2C, SPI, and many others. It has an approximate breakdown of 30kV ESD on the human body model.

Working Principle: The 30KPA144A works on the principle of avalanche breakdown, or Zener breakdown, in which the avalanche breakdown occurs when the electric field intensity applied across a PN junction exceeds the breakdown electric field strength and quickly discharges the transient high voltage pulse through the diode.

The 30KPA144A is essentially two 6.8volt, 10kW Zener diodes connected in series, with a breakdown voltage of 13.5 volts. This configuration offers two lines of protection against ESD. When the ESD pulse crosses the PN junction, the electric field strength exceeds the breakdown electric field strength, and the current begins to flow through the diode. The current then splits into two equal parts and is discharged into the ESD.

The 30KPA144A’s low reverse leakage current means that when the ESD pulse is discharged, the voltage on the protected circuit returns to its original state quickly, eliminating any risk of system corruption due to a high voltage transient. Additionally, the 30KPA144A has a low clamping voltage, meaning it will not cause any additional stress to the protected system when an ESD pulse is encountered.

The 30KPA144A is designed to provide high-speed, reliable, and robust protection for sensitive circuits against ESD and high-voltage transient pulses. Its two-stage protection, low-reverse leakage current, and low-clamping voltage make it an ideal component for protecting electronics in a wide variety of applications.

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