MPLAD18KP18CAE3

Voltage - Clamping (Max) @ Ipp:	29.2V
Supplier Device Package:	PLAD
Package / Case:	Nonstandard SMD
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	18000W (18kW)
Current - Peak Pulse (10/1000µs):	617A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	20V
Voltage - Reverse Standoff (Typ):	18V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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TVS - Diodes: Application Field and Working Principle

A Transient Voltage Suppression Diode (TVS) is a type of diode that is used for the protection of circuits from transients and surges, typically surges as short as a few nanoseconds. Commonly known as Transient Voltage Suppressor (TVS) Diodes, they are used in various electronic devices and circuits to protect against overvoltage and electrostatic discharge (ESD).The purpose of a TVS diode is to provide a semiconductor junction between two conducting elements that can carry high voltages. The two conducting elements are the anode and cathode. The anode is connected to the power circuit, and the cathode is connected to the ground plane. When a voltage above the specified limit is applied to the diode, the diode becomes “forward biased” and the current begins to flow through the junction. This current flow forms a structure called a “relief channel,” which is a path for the current to return to ground. This prevents the current from its original destination, which is the power circuit or the ground plane.TVS devices come in a variety of package styles and sizes to fit all different types of applications. Standard sizes are 0805, 0603, 0402, and SOT23 and ultra-small packages include SC-59, SC-70, and SMA. The most common type of TVS diode is the Multilayer Protection Array (MPA), which consists of multiple TVS diodes connected in parallel and a common anode and cathode. These types of devices offer superior overvoltage protection and are suitable for a wide range of applications, from consumer electronics to automotive and industrial equipment. In terms of the specific product MPLAD18KP18CAE3, it offers ESD protection and an additional overvoltage protection for systems. It is designed for use in the power entry port of a mobile application, such as a mobile phone or a tablet. It contains two protection devices in the same package, providing a total sidewall overvoltage protection of 18V.The working principle of TVS diodes in general is to turn on when an overvoltage or an ESD voltage surge exceeds the breakdown voltage of the TVS diode device. It will then conduct the excess energy away from the device being protected, preventing damage to the device or to the circuit. The Inverse Protection Principle makes sure that a TVS diode will not conduct when the voltage on the device is under the breakdown voltage.The MPLAD18KP18CAE3 device works by connecting the two devices in series, allowing them to share the energy from an overvoltage surge together. This shared energy and distribution helps to reduce the peak clamping voltage. The two protection devices, working in tandem with the Inverse Protection Principle, are placed in the power entry port to provide protection from surges and ESD events. This provides both overvoltage and ESD protection to the device in mobile applications, like cellular phones and tablets.Overall, TVS Diodes offer a wide range of protection for different devices and circuits from overvoltage and ESD. The Multilayer Protection Array (MPA) is one of the most popular types of TVS. It comes in packages of varying sizes, and provides superior protection from both ESD and overvoltages. The MPLAD18KP18CAE3 is a specific device designed for mobile applications, providing both ESD and overvoltage protection, as well as a shared energy flow to reduce the peak clamping voltage. All of these features make TVS diodes the ideal choice for protecting electronic devices and circuits from overvoltage and ESD events.

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