MXPLAD15KP85CAE3

The MXPLAD15KP85CAE3 is a unidirectional TVS (Transient Voltage Suppressor) diode, offering robust protection against transient and ESD (Electrostatic Discharge) voltage events. Designed to dissipate high surge energy, and protect sensitive circuitry from damage or system malfunction caused by such events, this diode is ideal for use in many applications.

Applications

The MXPLAD15KP85CAE3 is suitable for applications requiring high ESD and surge protection, such as digital TVs, VCRs, video game consoles, cell phones, laptops, and other consumer electronics. Additionally, its features make it suitable for rugged automotive, military and aerospace applications.

Working Principle

The MXPLAD15KP85CAE3 device works by employing a Zener diode, operating in avalanche breakdown mode. This diode is connected between the power supply and ground in a unidirectional configuration. When a voltage different from the normal operating range is applied on the input terminals, the Zener diode will be activated and the excess energy is then dissipated in the form of heat.

The amount of energy that can be dissipated depends on the breakdown voltage of the Zener diode. The device, with a breakdown voltage of 15kV, is capable of withstanding very high transients and ESD, compared to other similar devices.

Limitations

While the MXPLAD15KP85CAE3 provides superior protection against transient and ESD events, it also has certain limitations. Firstly, it is capable of dissipating surges that exceed 15kV, but it can withstand only one single such event. Secondly, it can be damaged if subjected to multiple ESD pulses, and hence may require multiple devices for improved reliability. Finally, the device cannot prevent or limit the rising of the voltage in the event of an overvoltage condition.

Conclusion

The MXPLAD15KP85CAE3 is an ideal unidirectional TVS diode, providing robust protection against ESD and transients. Its high breakdown voltage and low internal capacitance makes it suitable for a wide range of consumer electronics and automotive applications. Despite its limitations, it is an excellent choice for high-reliability designs.