AOZ8905CI

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The AOZ8905CI is a medium power surface mount TVS diode.
It has low capacitance and high peak pulse power liquid-level packages and is suitable for transient protection for I/O interfaces and power supplies.
This TVS diode features a fast response time, wide operating temperature range, and high peak pulse power rating.

Application Field

The AOZ8905CI TVS diode has many applications, and is used in many high-speed data ports such as Serial ATA (SATA), USB, Display Port (DP), and High-Definition Multimedia Interface (HDMI).
In addition, this TVS diode can also be used in lines that require other high-speed transmission protocols such as CANBus, I2C, and LVDS.
It is also appropriate for use in applications where the transient current surge is high, such as power supplies, DC motors, LED lights, automotive electronics, and in consumer electronics devices.
It also provides surge protection for applications such as computers, peripherals, communication devices, and other electronic components.

Working Principle

The working principle of the AOZ8905CI TVS diode is based on a semiconductor technology with a avalanche breakdown process. A silicon avalanche diode is an avalanche diode with a well-defined breakdown voltage. It is the combination of a low-impedance current path between the anode and cathode when the PN junction of the diode is forward biased and an avalanche breakdown current is created.
When this voltage exceeds the avalanche breakdown voltage of the diode, its PN junction is suddenly broken and electrostatic forces created by the current flow begin to break down the insulating areas of the diode, leading to current flowing to the anode and a much higher reverse current rating of the diode.
At this high voltage, a large electric field is created, and within the depletion layer, the energy released is enough to injure or even break down the material within.
By this process, the PN junction overshoot and breakdown also become less abrupt and the energy released from the can reduce surge current and voltages which can otherwise damage sensitive equipment.

Therefore, by using an AOZ8905CI TVS diode, the surge current and voltage can be limited and the damage prevented. In addition, it is important to note that these semiconductor devices are the fastest and most effective protective devices for high frequency inputs, and they can absorb up to 2,000 watts at 8/20 microseconds rise time. These diodes are also characterized by low clamping voltage, so they are an ideal solution for protection against transient and high frequency overvoltages.

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