UCLAMP3321ZATFT Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are solid-state voltage surge protectors that provide electrical circuit and device protection in applications that may be exposed to short-term, high-voltage or spikes. TVS diodes are designed to allow current to flow in the intended direction, while blocking current in the reverse direction. UCLAMP3321ZATFT is a type of TVS diode developed by Diodes Incorporated that draws very low leakage current while providing good inrush current protection. UCLAMP3321ZATFT TVS diodes perform bi-directional ESD, EFT, and transients protection for a wide range of electronic equipment.

UCLAMP3321ZATFT is an ultra-low capacitance (3 pF), small form-factor (0805 package size) unit designed to protect high-speed data communication lines up to 15 kV per IEC 61000-4-2 level 4 (air discharge) and 8 kV (contact discharge). This device can withstand ESD events of up to 30kV (contact discharge), making it well positioned to excel in industrial, consumer, and automotive industries to protect communication ports. UCLAMP3321ZATFT are used in applications where electrostatic discharge (ESD) protection is needed, such as mobile phone, laptop and personal computer with I/O ports, touch pad, card readers, remote control, other hand-held electronic devices.

Additionally, UCLAMP3321ZATFT offer robust protection from other potential sources of transients such as Lightning (< 8kV/ 5kA), faster ESD and EFT transients (< tHL= 0.7ns, tP=- 0.15ns). This device also provides a low capacitance 0.7pF of the capacitance that does not hamper the quality of signal transmission for high-speed data applications, further protecting the electronic devices.

The operating principle behind UCLAMP3321ZATFT diode is based on the avalanche breakdown effect. The avalanche breakdown effect occurs when electric field intensity of a free quasi-neutral electron and hole gas exceed a certain value, in which excess electrons start to impact on other atoms and give off electron-hole pairs to create an avalanche breakdown effect. UCLAMP3321ZATFT contains single tiny junction with a narrow gap and a higher doping profile to enable the avalanche breakdown effect. The gap creates voltage, current and power dissipation ratings that can protect complex electronic circuits against the destructive effects of transients and noises.

UCLAMP3321ZATFT is a reliable, user-friendly solution for effective ESD, EFT, and transients protection for a wide range of applications. It delivers superior protection without degrading the signal quality and has an ultra-low capacitance rating to ensure its effectiveness in high-speed data transfer. Its low leakage current helps to protect the device from potential damage and also ensures low power consumption, making it an ideal choice for various applications.

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