Voltage - Clamping (Max) @ Ipp:	35.5V
Supplier Device Package:	DO-214AB
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	3000W (3kW)
Current - Peak Pulse (10/1000µs):	84.4A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	24.4V
Voltage - Reverse Standoff (Typ):	22V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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TVS - Diodes: MSMLJ22AE3 application field and working principle

TVS (transient voltage suppressor) diodes provide protection from electrical transients such as lightning and ESD (electrostatic discharges). They limit excessive current spikes, reduce the risk of damage to critical electronics, and maintain system reliability.The MSMLJ22AE3 is a 2-line unidirectional, 1500W peak power TVS diode designed for overvoltage protection applications. It has breakover voltage of 22V, working temperature from -55°C to 175°C and surge current capability of 160A. The common application fields of MSMLJ22AE3 include portable electronic devices and automotive systems.To understand the working mechanism of the MSMLJ22AE3, we need to first know about the concept of avalanche breakdown. Avalanche breakdown happens when a current traveling through an inter-base region of a diode or transistor is strong enough to cause electrons and holes to get accelerated in the field created in the base region, the high impact of these accelerate particles to the base region’s atoms cause them to ionize and generate more electrons and holes, a free electron, and a hole recombine with each other at the base region to create more electrons and holes. This continues to happen and the number of electrons and holes increases at a very rapid rate, which causes the voltage to drop, and current increases. This is called avalanche breakdown.The MSMLJ22AE3 is designed such that if the voltage across the diode exceeds 22V, the avalanche breakdown process is triggered and current starts to increase dramatically. This causes the voltage to drop suddenly and modulate current to protect the components from damage, and the diode also successfully dissipates excessive current from the circuit.The MSMLJ22AE3 has a low clamping ratio, which results in smaller capacitance variations. This helps to reduce common-mode currents and EMI (electromagnetic interference). It also has a fast response time, meaning that it can protect the circuit from overvoltage very quickly if it occurs. Also, due to its low profile and tiny size, the MSMLJ22AE3 can be used in applications with space constraints.Lastly, the MSMLJ22AE3 features a soft clamping characteristic, which helps to reduce transient voltage excursions and ensures that the system operates reliably even in the presence of surge voltages. Soft clamping can also reduce the risk of arcing and allow the diode to switch quickly between forward conduction and avalanche breakdown states in order to protect the system components from the harmful effects of transients and surges.In conclusion, the MSMLJ22AE3 is a versatile transient voltage suppressor diode designed for overvoltage protection applications in portable electronic devices and automotive systems. It can withstand surge voltages up to 22V, has a fast response time, and features a low profile and soft clamping characteristic. It is an ideal choice for applications where these attributes are needed.

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