MX1.5KE18A Circuit Protection

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Transil or Transient Voltage Suppressor Diode, commonly known as a TVS Diode, is a form of diode which is able to provide protection against electric transients and sudden voltage spikes. The MX1.5KE18A is an example of a TVS Diode and is designed to protect a medium voltage range, whilst performing a range of applications in the electronics industry.

Features of MX1.5KE18A

• Medium DC breakdown voltage ranges between 11.7V and 28V with various additional variances
• Low leakage current and fast response times
• High reliability and excellent clamping capabilities
• Surge capability up to 42A for 8/20μs
• Very low loading capacitance making it suitable for signal protection

Applications of MX1.5KE18A

Amongst other TVS Diodes, the MX1.5KE18A is popular when an efficient and reliable form of over-voltage protection is needed. The main applications of the MX1.5KE18A includes:

• Automotive
• Industrial
• Consumer electronics
• Aerospace
• Telecommunications
• PCB protection
• USB port or Hub protection

Working Principle of the MX1.5KE18A

The operation of the MX1.5KE18A is mainly centred around its semiconductor structure. Its design allows for a voltage to be applied to the cathode, that exceeds the breakdown voltage of the TVS Diode. As the voltage exceeds the breakdown voltage, an avalanche breakdown mechanism is triggered, which causes a current to flow through the diode.

The avalanche breakdown mechanism enables the device to absorb large amounts of energy very quickly, and helps to limit the surge current passing through the protected circuit. The diode then acts as a bidirectional clamp, which acts like a switch that limits and diverts the surge current. The energy is then safely discharged by the diode and diverted away from the protected circuit.

The MX1.5KE18A becomes the main active protective component in voltage spike or surge suppression circuits, at the front of the line of defence. It offers the convenience of excellent performance in applications over a broad range of conditions and circumstances.

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