MXLSMLJ70AE3 Circuit Protection

Voltage - Clamping (Max) @ Ipp:	113V
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):	26.6A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	77.8V
Voltage - Reverse Standoff (Typ):	70V
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 and MXLSMLJ70AE3 application field and working principle
TVS - Diodes, or Transient Voltage Suppressors, are a form of a diode specifically designed to protect sensitive electronic components from the harmful effects of electrostatic discharge (ESD) or electrical overstress (EOS). A TVS diode is generally used to protect components from surge voltages and can withstand high instantaneous power dissipation.
The MXLSMLJ70AE3 is a bi-directional (three-terminal) transient voltage suppressor (TVS) diode, specifically designed to suppress transients in a broad range of protection applications. It offers both ESD and EOS protection, and has a low-capacitance, low-leakage design which allows it to protect sensitive electrical and electronic components with minimal effect on data signal compatibility.
The MXLSMLJ70AE3 TVS diode has a wide range of industry-standard devices available with multiple working voltages, from 7.0V to 30.0V, and with maximum power ratings up to 68 W peak pulse power (1.0 ms). The maximum operating junction temperature is 150˚C and it is suitable for both commercial and automotive applications. Its three terminals include the cathode (K), the anode (A), and the external lead terminal (L).
The main function of the MXLSMLJ70AE3 is to protect sensitive electrical and electronic components against transient voltage surges or Electrical Overstress (EOS). The device operates in a circuit by clamping transient voltages to a safe level, while allowing steady-state current to continue through the protected component or circuit. During steady-state condition, the breakdown voltage of the device is maintained, while during a surge event the supply voltage is “clamped” with the base breakdown voltage of the MXLSMLJ70AE3 TVS diode. This clamping function works in both directions, as the diode can be internally connected either in series with or in parallel with the circuit it is protecting.
The working principle of the MXLSMLJ70AE3 essentially entails two functions. The first is ESD protection, which is responsible for absorbing and dissipating a surge current spike. The other function is EOS protection, which is responsible for clamping the supply voltage during a surge event. Clamping is accomplished when the internal junction of the diode is switched on at a lower voltage than the peak surge. When the diode switches on, the junction voltage is clamped to the base breakdown voltage of the device. The device then begins to pass current to the external circuit and any additional voltage is dissipated as internal heat in the diode. The device is designed to reset automatically after the surge event is over.
The MXLSMLJ70AE3 is suitable for a wide range of applications including automotive, consumer, election, industrial, military, and telecommunications. It can be used for ESD protection of sensitive electronic components such as PCMCIA cards, cell phones, PDA’s, USB ports, and similar devices. It is also suitable for providing surge protection for power lines, AC mains, and other similar applications. It can also be used to protect LED circuits from lightning strikes and voltage transients in automotive applications.
In conclusion, the MXLSMLJ70AE3 is an important component for protecting sensitive electrical and electronic components from ESD and EOS. It is designed with a low-capacitance, low-leakage design and can be used in a wide variety of applications. The device is reliable and has a reliable performance in protecting electrical and electronic components from transient voltage surges.

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