LNBTVS3-220U

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TVS (Transient Voltage Suppressor) diodes, or Transient Voltage Suppressors, are special types of diodes that are used to protect against transient voltage surges in electronic circuits. The LNBTVS3-220U is one such device. This application note will describe the application field and working principle of the LNBTVS3-220U.

The LNBTVS3-220U is classified as a bidirectional ESD (Electrostatic Discharge) protection device. It is designed to protect against both positive and negative transient voltage surge situations. These transient voltage surges can cause significant damage to electronic components, leading to malfunctions, and potentially even complete failures of the circuit board. The LNBTVS3-220U offers bidirectional ESD protection up to 220V, making it a suitable choice for both consumer and industrial applications.

The LNBTVS3-220U is rated for a maximum peak pulse power of 50 Watts. It is designed to protect against short-term (up to 10µs) voltage transients. It also offers good transient voltage protection, with a withstanding voltage of up to 38v during continuous operation. This is well-suited to situations where the voltage applied to the circuit board can vary by a significant amount.

The device has a simple design, with a single P-channel MOSFET inside. The ON resistance of the MOSFET is very low, making it suitable for low power applications. The device also has a low leakage current, which makes it suitable for use in low power applications where a precise and consistent current is required.

The working principle of the LNBTVS3-220U is very simple. When the voltage surpasses the breakover voltage, the P-channel MOSFET inside the device will turn on, allowing current to flow through the device. This current will be diverted through the device, thus protecting the components on the circuit board from the surge voltage. When the surge voltage decreases, the device will turn off the current flow, thus protecting the circuit again.

In addition to ESD protection, the LNBTVS3-220U can also be used for EFT (electro-magnetic field)energetic protection or as a TVS (Transient Voltage Suppressor)* in applications where the voltage can vary significantly. The device can also be used as a fail-safe device, to protect against voltage spikes or, in the case of automotive applications, against voltage drops.

Overall, the LNBTVS3-220U is a well-designed bidirectional protection device that is suitable for a wide range of applications. It is rated for a maximum peak pulse power of 50 Watts and a withstanding voltage of 38V for continuous operation. It is also designed for simple ESD protection, EFT protection, or as a fail-safe device. The simple working principle of the device makes it an ideal choice for any application that requires reliable protection from transient voltages.

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