AOZ8925CI Circuit Protection

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TVS (Transient Voltage Suppression) diodes, also known as clamp diodes, are effective components in preventing transient surges, electrostatic discharges, and electrical noises from adversely affecting other components in a circuit. The AOZ8925CI is a 15KV high-current ESD protection diode especially designed to protect sensitive components from electrostatic discharge (ESD) events. It is composed of a low-capacitance overvoltage clamp, a current limiting device, and a pair of reverse breakdown diodes, and can protect data and signal lines from damage due to ESD, high dV/dt, and high current spikes.

The AOZ8925CI features excellent electrical performance in ESD transient pulse protection while suppressing signal integrity degradation. Its low capacitance of 4.5pF enables it to prevent high-speed signal ESD attack or up to 15KV. Furthermore, it can withstand high dV/dt up to 103V/ns and can handle large current spikes up to 51A. Due to its low on-resistance, it helps reduce power loss throughout the system.

In terms of its operation, AOZ8925CI detects ESD events and limits voltage across the protected device. When an ESD transient enters the circuit, the low capacitance of the diode quickly detects the transient and clamps the voltage across the protected device within the specified range. The diode’s limited current seems to “push” the ESD transient away and transports it to ground. The ESD current consumed by the diode is clamped within an acceptable current range so that the protected device will not suffer any damage.

The AOZ8925CI is ideal for protecting sensitive components such as processors, memory, ICs, and FPGAs against ESD, EFT, and lightning surge voltage events. It is also suitable for mobile phone, HDTV, automotive, laptops, game consoles, and other devices that require protection from transient surges or electrical noise. Additionally, it can be used for protecting high-speed I/O signal lines such as USB, HDMI and video equipment with low signal crosstalk and low power consumption.

Due to its low capacitance, high dV/dt, and high current protection, the AOZ8925CI is an excellent protection device for electronics and digital products. It helps to protect high-speed digital data lines from damage due to ESD, EFT and high voltage transients, with low insertion loss, low signal crosstalk and low power consumption.

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