TVS-Diodes

Voltage-dependent TVS diodes are designed to protect sensitive electronic components from transient overvoltage events. An example of such device is the MXL15KP33A. It is a unidirectional device with Faraday shield DESA technology. Faraday shield DESA technology features a layer or layers of shielding between device electrodes to reduce ESD-induced noise, while maintaining low capacitance and fast switching speed.

MXL15KP33A Application Field

The MXL15KP33A is designed to protect a wide range of electronic equipment from transient overvoltage damage, such as signal lines, data acquisition systems, power distribution systems, HVAC systems, telecommunications systems, automotive systems, and digital signal processors. The protection it provides can be used in both medical and commercial applications.

MXL15KP33A Working Principle

When overvoltage is present on the protected line, the MXL15KP33A absorbs the energy, limiting the overvoltage on the line. This limits the current flow and voltage spike on the protected line. The protection that this device provides is generally sufficient to withstand IEC61000-4-2 and other standard tests up to 1.5kV.

The working principle of the MXL15KP33A is based on a simple phenomenon known as avalanche breakdown. When a high enough electric field is applied to the device, electrons are accelerated to high velocities. This causes ionization of surrounding atoms or molecules, creating an avalanche of carriers inside the device that dissipate theelectric current through it.

The MXL15KP33A also features low capacitance values, which allow the device to respond quickly to transient overvoltage, eliminating the need for large bypass capacitors. The device is also designed to withstand multiple surges. When a surge is detected, the device absorbs the energy and then quickly recovers to its normal operating state.

Conclusion

The MXL15KP33A is an ideal device for protecting sensitive electronic equipment from transient overvoltage events. Its Faraday shield DESA technology minimizes ESD-induced noise while providing fast switching speed. The low capacitance value allows the device to respond quickly to transient overvoltage, and the device is designed to withstand multiple surge events. It is recommended for a wide range of electronic equipment and is suitable for medical and commercial applications.