MSMCG110CA Circuit Protection

Voltage - Clamping (Max) @ Ipp:	177V
Supplier Device Package:	SMCG (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:	1500W (1.5kW)
Current - Peak Pulse (10/1000µs):	8.4A
Series:	Military, MIL-PRF-19500
Voltage - Breakdown (Min):	122V
Voltage - Reverse Standoff (Typ):	110V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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MSMCG110CA TVS – Diodes Application Field and Working Principle

TVS – Diodes or Transient Voltage Suppression (TVS) Diodes act as clamping devices that help guard against electrical overstress caused due to external events. This mechanism helps protect delicate electronic components such as semiconductors from electrical faults and damage caused due to transients and surges. MSMCG110CA classified as an unidirectional device, offers a capacitance of 110pF which helps provide noise suppression protection.

What Are TVS Diodes?

TVS diodes are ultrafast semiconductor devices that have the ability to protect sensitive electronic components from damage due to voltage transients. On the outside, they look like small glass-encapsulated diodes with metal contacts in order to enable easy connection to circuit boards. They are made of silicon or other permittivity-varied dielectric materials that are extremely fast in responding to transient events, clamping their effect on other components in the circuit. TVS diodes can be used on line circuits, such as telephone lines, or in power converters/transducers on direct current line applications.In general, when the voltage passing through the TVS diode reaches a predetermined threshold – typically set by the application – the diode turns on and short circuits the current. This helps protect the components from the overstress condition (by reducing the current flow to zero) and allows the current to flow in an alternate path. The alternate path or shunt of current travels through the TVS diode and provides protection to the following components in the circuit.

MSMCG110CA TVS – Diodes

MSMCG110CA is a unidirectional or symmetrical TVS (Transient Voltage Suppression) device from ‘Microchip.’ It’s usually used in-line communication lines in order to protect them from voltage transients and modify the electrical characteristics of the line. It provides excellent protection for long lines and can cope with high data rate transients.The MSMCG110CA has a 55 Volt, low capacitance ESD diode with a capacitance of 110pF. It has a very fast response time, making it effective in protecting against overvoltage from external events. The diode also has an operating temperature range of -55 to +125°C, making it suitable for industrial applications. The diode also offers a high pulse surge current of 12 KA. The typical fields of applications for the MSMCG110CA TVS device are:

• Lightning protection on communication lines
• Data lines, including USB, telephone and LAN
• Industrial Ethernet lines
• Ethernet, Power Over Ethernet (PoE) and High Definition Multimedia Interface (HDMI) ports
• Time Division Multiplexing (TDM) devices
• RFID, smart power and automotive systems
• Video and audio systems

Working Principle of MSMCG110CA

The MSMCG110CA can be classified as a symmetrical diode or a unidirectional diode. The MSMCG110CA responds to an external overvoltage by providing a path for the diverted current, thus preventing the device from experiencing overvoltages. This helps protect the device from voltage transients and spike voltages. When the voltage reaches the threshold voltage at the anode of the diode, it will turn-on due to avalanche breakdown. This allows the current to flow in the alternate path provided by the diode, thus reducing the current flow to zero. This helps protect the devices from transient voltages and reduces the risk of damage due to overvoltages.When the voltage at the anode of the diode drops below the threshold voltage, the diode will turn-off and the circuit will be restored back to its original state.

Conclusion

TVS Diodes, such as the MSMCG110CA transient voltage suppression diodes, are used to protect delicate electronic circuits from overvoltage transients and surges caused due to external events. The device guards against electrical overstress, providing a path for the diverted current and allowing the current to flow in an alternate path away from the device, thus reducing the risk of damage. It’s suitable for industrial applications due to its operating temperature range and high pulse surge current.

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