MSMCG78AE3 Datasheet/PDFMSMCG78AE3 application field and working principle
MSMCG78AE3 is a component of TVS diode, which is a two-terminal solid-state electronic component, characterized by a fast acting and high-voltage blocking capability.TVS diodes provide voltage protection by clamping the electrical surge to a safe level to protect the circuit and components downstream from the TVS.The MSMCG78AE3 provides good protection for different circuits, including USB or other ports, AC/DC power supplies, communication modules, smart cards, battery protection and protection for computer ports The MSMCG78AE3 can protect against transients induced by lightning and other electromagnetic interference.
Working principle
The MSMCG78AE3 works on the principle of clamping.The P-N junction of the diode acts as a voltage-dependent resistor.At over-voltage condition, it starts to conduct and clamps the over-voltage and clamps it to a safe level without affecting the normal operation of the downstream circuit.The clamping voltage varies depending on the type of diode used and the clamping current also depends on the type of diode.The MSMCG78AE3 has a clamping voltage of 7.8 V.
The MSMCG78AE3 is designed to limit the over-voltage which is caused by high-energy surges such as induced lightning or ESD.The diode starts to conduct when the over-voltage reaches its rating.Once the over-voltage reaches its peak the diode starts conducting and begins to clamp the over-voltage to a safe level.The diode will remain in conducting state until the over-voltage is removed and it will turn to its reverse-bias state blocking the over-voltage.
Features
- Tolerance to transients up to 7.8 V
- Low capacitance to reduce signal reflections
- Excellent clamping capability
- Low maximum clamping input voltages
- Low leakage current
- Low insertion loss
- Low Snapback voltage
- High voltage standoff ratio
Application
The MSMCG78AE3 is suitable for protecting ports, AC/DC power supplies, communication modules, smart cards, battery protection and protection for computer ports from electronic transients.The diode can also be used in automotive applications both for power supply and in-vehicle networks.The diode is also used in consumer electronics such as camera, cell phone and personal computers.
The MSMCG78AE3 has excellent clamping performance and low capacitance which ensures good signal reflections.It has low maximum clamping input voltage, low insertion loss ,low snap back voltage and high voltage standoff ratio.The diode is also suitable to protect both GPIO ports and power supply lines.
Conclusion
The MSMCG78AE3 is a two-terminal solid-state component which is part of the TVS diode family.The diode provides high-voltage protection by clamping the electrical surge to a safe level.It has excellent clamping performance and low-capacitance which makes it suitable to protect electronic components and circuits from transients.The diode is suitable for various applications including automotive, consumer electronics and computer ports.