MXSMCJ70CAE3 Circuit Protection

Voltage - Clamping (Max) @ Ipp:	113V
Supplier Device Package:	DO-214AB (SMCJ)
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:	1500W (1.5kW)
Current - Peak Pulse (10/1000µs):	13.3A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	77.8V
Voltage - Reverse Standoff (Typ):	70V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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TVS - Diodes

Transient Voltage Suppressor (TVS) diodes are mainly used in the electronic industry in the protection circuit of various electronic products, electronic components and other products.The axial-leaded TVS diode MXSMCJ70CAE3 is a large current pulse TVS diode specifically designed for automotive applications.

Application Field

The MXSMCJ70CAE3 axial-leaded TVS diode is particularly suitable for the protection of semiconductor components for automotive applications, such as the electronic control unit (ECU). The diode itself is a direct substitute for the SMAJ protection components, with an expanded range of peak pulse current ratings up to 98 kA and a lower working voltage, achieving greater robustness and long-term reliability.It can effectively protect various electronic components from transient overvoltage caused by ESD, lightning strikes, inductive switching and electrostatic discharge. In the application of high-frequency switching power supply, automotive system and other circuit protection, it plays a better role in protecting various electronic components and circuits from destructive transient overvoltage.

Working Principle

When the protecting voltage exceeds the rated value, the diode conductance is increased from almost zero to a high value, and the rising slope of the diode is increased, thus creating a safe return channel for the circuit to reduce the voltage, improve the reliability of the components, and protect the circuit from overvoltage destruction. The diode\'s low working voltage and high peak pulse current help to reduce the device’s forward voltage drop, which provides more effective circuit protection.The diode contains a special element structure which permits a low-power series resistor to be used in series with the diode in order to reduce the high maximum voltage rating of the diode. The reverse breakdown voltage of the diode is determined by the energy band gap of the semiconductor barrier material, which should be greater than the maximum voltage of the power supply in order to achieve the desired protection effect.In addition to providing protection against transient overvoltage, the diode can also act as a buffer circuit in order to provide additional current and limit the rate of rise of the voltage across the protected component. This ensures that the protected component receives the appropriate amount of current during the transient overvoltage event, and prevents voltage spikes from damaging the protected component.To ensure optimal performance, the diode should be operated under clear ambient conditions, with a temperature range of -55 to +125 degrees Celsius, and high humidities should be avoided. Furthermore, the diode should also be operated within the specified range of forward voltage drop to ensure the best performance.

Conclusion

The MXSMCJ70CAE3 axial-leaded TVS diode is specially designed for automotive applications, and its low operating voltage and high peak current help protect various electronic components and circuit from destructive transient overvoltage. In addition to providing protection against transient overvoltage, the diode also acts as a buffer circuit, limiting the rise of the voltage across the protected component and ensuring that the component receives the appropriate amount of current. The diode should be operated under clear conditions and within the specific voltage drop range in order to achieve optimal performance.

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