MXLSMLJ120AE3 Circuit Protection

Voltage - Clamping (Max) @ Ipp:	193V
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):	15.6A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	133V
Voltage - Reverse Standoff (Typ):	120V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to TVS – Diodes

TVS (Transient Voltage Suppression) diodes, also known as Transient Voltage Suppressors (TVSs), are special types of diodes used in electronics to protect sensitive device circuitry from electrostatic discharge and other forms of electrical overstress. These devices are particularly useful when connecting different electrical systems together, as they are designed to protect from the potentially destructive interference effects of connecting different systems on the same circuit.

How Do TVS – Diodes Work?

TVS-diodes use the same basic diode construction and operation as conventional diodes, but with a key difference: they are designed to conduct electricity only when the voltage across them reaches a certain threshold. When a transient voltage spike or surge that exceeds this threshold voltage is encountered, TVS-diodes allow the surge current to quickly flow through the diode, thereby suppressing the transient voltage or allowing it to do minimal damage. The application of the MXLSMLJ120AE3 TVS-diode is specifically designed for the protection of VGA ports (Video Graphics Array) from electrical overstress. TVS diodes work as a "clamp" to ensure the voltage remains within an acceptable range, allowing video signals to travel to a monitor while simultaneously protecting devices from being damaged due to a short circuit or other electrical problem.

Advantages of TVS – Diodes

TVS-diodes, such as the MXLSMLJ120AE3, are designed to provide excellent protection from transient voltage spikes and surges in a relatively small size. They are also very effective at providing protection from ESD (electro-static discharge) which can be a major issue in termination applications. Lastly, they can provide protection from both EMI (electromagnetic interference) and RFI (radio frequency interference). Other advantages include fast response time, low leakage current, low capacitance, and low power loss.

Conclusion

In conclusion, TVS-diodes are a type of diode designed to conduct electricity only when the voltage across them reaches certain threshold levels. The MXLSMLJ120AE3, specifically, is intended for use with VGA ports to provide protection from electrical overstress, transients, ESD, EMI, and RFI. They are fast responding, low-leakage, low-capacitance, and low-power loss devices, making them invaluable in assuring reliable electronics both in consumer and industrial applications.

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