Current - Peak Pulse (10/1000µs):	1500A (1.5kA)
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)
Series:	Military, MIL-PRF-19500
Voltage - Clamping (Max) @ Ipp:	12V
Voltage - Breakdown (Min):	7.78V
Voltage - Reverse Standoff (Typ):	7V
Unidirectional Channels:	1
Type:	Zener
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

MAPLAD18KP70AE3 is a type of low total capacitance television transient suppressor diode (TVS). It can mainly be used to protect from transient voltage spikes caused by electromagnetic and electrostatic discharges. In this article, the application field and working principle of MAPLAD18KP70AE3 will be explored.

Application Field of MAPLAD18KP70AE3

The MAPLAD18KP70AE3 can be used in a variety of ways for protection of sensitive equipment. Primarily, it can be used to protect high-frequency analog and digital circuits from damage caused by lightning and other voltage surges. Furthermore, MAPLAD18KP70AE3 can be connected in a way that takes advantage of its reverse bi-directional ESD protection which makes it useful for high-speed data interfaces and other delicate electrical components. This TVS diode is also often used when dealing with high-frequency applications, such as telecommunications and broadcasting. It can protect from surge voltages and differential-mode EFT voltage transients, and can even be used in applications which require floating ground operation. Additionally, the MAPLAD18KP70AE3 finds application in many automotive and industrial applications such as power supply circuits and computer peripheral circuits for over-voltage protection.

Working Principle of MAPLAD18KP70AE3

The MAPLAD18KP70AE3 is a reverse-biased diode, meaning that it conducts reverse current when a positive voltage external to the diode is applied. This current can travel through the diode but cannot conduct from the anode to the cathode. The most important feature of MAPLAD18KP70AE3 is its ability to restrict any surge current or over-voltage transient to a safe level. The current flows through the diode until a certain threshold voltage is reached, at which point it will trigger the breakover voltage which releases the stored charge and diverts the surge current away from the protected device. This switching occurs very quickly, usually in a few nanoseconds, and releases the stored energy before the surge achieves damaging levels. The MAPLAD18KP70AE3 also has the advantage of being a temperature-independent device which means it can make predictions of breakover voltage under various temperatures more reliable.

Conclusion

In conclusion, the MAPLAD18KP70AE3 is a type of TVS diode which is used to protect sensitive equipment from transient voltages. It is suitable for a broad range of applications, such as high-frequency analog and digital circuits, telecommunications, broadcasting, power supplies, and computer peripherals. Its primary feature is its ability to limit any surge current or over-voltage transient to safe levels through a breakover voltage, and this process is triggered quickly and reliably.

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