MSMLG18AE3

Voltage - Clamping (Max) @ Ipp:	29.2V
Supplier Device Package:	SMLG (DO-215AB)
Package / Case:	DO-215AB, SMC Gull Wing
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):	102.8A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	20V
Voltage - Reverse Standoff (Typ):	18V
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: MSMLG18AE3 Application Field and Working Principle

Transient Voltage Suppression (TVS) diodes are a class of protective semiconductors devices designed to limit voltage transients, such as those caused by lightning or electrostatic discharge (ESD). They act as a sacrificial component, absorbing any damaging electricity before it can reach sensitive components.The MSMLG18AE3 is a TVS diode manufactured by MMIC. It is an 18V bidirectional device which features an ultra-low capacitance of 0.82 pF and an ultra-low dynamic resistance. This device is designed to meet the requirements of IEC 61000-4-2 level 4 ESD performance. It features an operating temperature range from -55°C to +150°C and is available in leadless molded packages.The MSMLG18AE3 is ideal for protecting electronic components used in automotive, telecommunications, consumer electronics, and communications systems. Its ultra-low capacitance and dynamic resistance provide excellent electrical and thermal performance, increasing the lifespan of the protected components. Additionally, the MSMLG18AE3 is designed to withstand high surge and lightning voltages and can be connected directly to the power supply without additional filtering.At the core of its operation, the MSMLG18AE3 relies on avalanche breakdown to absorb any excess voltage. This breakdown effect occurs when a large current flows through the device, causing its internal junction to become heavily doped. This absorbed current is referred to as the avalanche current. Heat is generated as a result of this effect and the device will continue to absorb this energy until it reaches its breakdown point.The MSMLG18AE3 also features thermal protection. This feature limits the amount of energy that can be absorbed during an overvoltage event, preventing any damage to the protected components. The device also incorporates over-temperature protection, meaning it will shut down automatically if the temperature exceeds a certain threshold.In summary, the MSMLG18AE3 is an excellent choice for protecting electronic components from overvoltage transients. Its ultra-low capacitance and dynamic resistance ensure excellent performance and provide a reliable means of keeping valuable components safe from damages. Furthermore, the device’s thermal and over-temperature protection features provide peace of mind that the device will not be damaged during a surge event.

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