CD214B-T120ALF Circuit Protection

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Transient Voltage Suppressor (TVS) diodes are electronic components that help protect components in a circuit from voltage spikes, electrical noise, static, and other transient voltage conditions. The CD214B-T120ALF is a surge-protecting diode in a 12.2 mm by 3.2 mm SMB surface-mount module for robust surge protection performance. It uses Zener breakdown technology to protect equipment and components from transients and has a high power dissipation capability (P at 1 ms - 150 W). This device offers good clamping capability and very low leakage current with high dielectric strength and capacitance. TVS also offers different levels of protection, such as Line-to-Line (L–L) or Line-to-Ground (L–G) protection.

The CD214B-T120ALF can be classified as a TVS diode due to its application field and working principle. This particular device can be used to prevent over-voltage damage in a wide range of applications, from consumer electronics to automotive and industrial. It is ideal for use in automotive options such as airbags, Door Control Modules (DCM), and sunroof control systems, and also provides protection of AC outlets in household appliances. Additionally, the CD214B-T120ALF chip can also act as an Uninterruptible Power Supply (UPS) to provide an additional layer of protection for sensitive electronic components.

The CD214B-T120ALF operates through the principle of Zener breakdown. This device contains two Zener diodes connected in a back-to-back arrangement to form a single bipole. When an over-voltage, static, or surge event occurs, the breakdown voltage of the Zener diode is exceeded. This causes an increased current flow and thus a voltage across the load. This voltage is called the holding voltage, or the clamp voltage, and is what determines the total level of protection that is provided by the device.

When it comes to protection, the CD214B-T120ALF chip offers a high-energy, low clamping transient voltage protection and suppression for both AC and DC line-to-ground and line-to-line modes. This device also has an excellent high ESD rating (up to 25 kV for human-body model) and low capacitance, allowing it to provide superior performance in both high-frequency and low-frequency applications. It can also operate in a wide range of temperatures, from -65°C to +150°C.

The CD214B-T120ALF is a versatile device, and its performance parameters make it ideal for a wide variety of applications. Its combination of high power dissipation and energy handling capability, excellent ESD protection, and wide operating temperature range makes it particularly suitable for applications in automotive, industrial, consumer electronics, and power supply markets.

As a TVS diode, the CD214B-T120ALF offers robust surge protection performance in a small, surface-mount package. Its Zener breakdown-based working principle enables it to provide excellent protection from over-voltage, static, and transient events. It offers high-energy, low clamping transient voltage protection and suppression, as well as a high ESD rating and low capacitance. This makes it ideal for a wide range of applications in automotive, industrial, consumer electronics, and power supply markets, making it a versatile and reliable transient voltage suppression device.

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