MXPLAD6.5KP85A

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TVS-Diodes (Transient Voltage Suppression Diodes) are specialized diodes that have the capability to provide protection against voltage transients. The MXPLAD6.5KP85A is a bi-directional unidirectional TVS Diode Arrays designed for over-voltage protection of data lines. This device has an optimized, low leakage current, which ensures protection for sensitive circuitry against damage and destruction in case of external or internal transients.

Application Field

The MXPLAD6.5KP85A is ideal for the protection of industrial, automotive and consumer applications that require a robust, low-cost ESD protection, such as data lines in servers, LAN, PC motherboards, USB (HCI & FTDI) Ports, charging ports, automotive infotainment systems, audio lines and DC power lines. This device provides a maximum ESD robustness of up to 8 kV contact and 15 kV air discharge per the IEC-61000-4-2 standard.

Working Principle

The MXPLAD6.5KP85A utilizes a varistor, an array of zener diodes, in order to protect against overvoltage transients, also known as ESD (Electrostatic Discharge). This device utilizes the principle of avalanche breakdown, meaning that when a transient voltage exceeds the reverse breakdown voltage level of the varistor, the device will rapidly turn on, carrying the excess voltage surge from the protected circuitry and providing a path to ground. The surge can then be safely discharged into the ground.

In addition, when the transient current is low, the varistor will shift back off again and will return to its original breakdown voltage level. This ensures that long-term, excessive voltage levels, which cause the device to become permanently damaged, are prevented. The MXPLAD6.5KP85A is also designed with a low current leakage ensuring that there is negligible power loss during normal operation.

Conclusion

The MXPLAD6.5KP85A is a transient voltage protection device that offers an over-voltage protection of data lines. By employing the concept of avalanche breakdown it can offer a reliable protection of sensitive circuits against ESD until 8 kV in contact and 15 kV in air discharge according to IEC-61000-4-2 standard. In addition, the device also carries a low leakage current, ensuring a minimal power loss during normal operation and long-term reliability.

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