SM5A27THE3/I Circuit Protection

Current - Peak Pulse (10/1000µs):	55A (8/20µs)
Base Part Number:	SM5A27
Supplier Device Package:	DO-218AB
Package / Case:	DO-218AB
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	3600W (3.6kW)
Series:	Automotive, AEC-Q101, PAR®
Voltage - Clamping (Max) @ Ipp:	40V
Voltage - Breakdown (Min):	24V
Voltage - Reverse Standoff (Typ):	22V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

SM5A27TH3/I is a type of TVS (Transient Voltage Suppressor) diode which is specifically designed to protect equipment from overvoltage and ESD (Electrostatic Discharge) damage. It is widely used in various applications such as automotive, industrial and consumer electronics due to its superior performance and cost effectiveness. The SM5A27TH3/I is a three-terminal diode with a monolithic structure and is particularly suitable for ESD protection on internal signal lines. It can withstand up to 2000V ESD pulses with no damage to the device itself and can also be applied to protect against electrostatic discharge, voltage transients and other forms of voltage surges. Furthermore, this type of diode is able to maintain its protection capability for a long period of time even when subjected to extreme transient voltage conditions.

Application Fields

The SM5A27TH3/I is best suited for ESD protection in consumer electronics, automotive electronics, industrial control and communications. It can be used in a variety of applications where overvoltage protection is required such as on signal lines or power inputs in computer monitors, digital cameras, GPS systems and other portable electronics. It can also be used in automotive electronics, industrial control and measurement systems. Furthermore, it can be used for protection from transients in telecom equipment, power line applications, and railroads.

Working Principle

The working principle of the SM5A27TH3/I diode is based on the the principle of achieving overvoltage or ESD protection through the selection and combination of components such as diodes, resistors and capacitors. The SM5A27TH3/I is essentially a three-terminal diode with two different characteristic curves to achieve the dual function of voltage protection and ESD protection. The diode is constructed with an anode connected to the ground and two cathodes connected to the input signal line. When exposed to an overvoltage or a ESD event, the diode will trigger and dissipate the energy safely while keeping the input signal line voltage within a safe range.

Conclusion

In conclusion, the SM5A27TH3/I is a type of TVS diode well suited for ESD and overvoltage protection in various kinds of applications. Its three-terminal structure and superior performance make it an ideal device for ESD and overvoltage protection. This diode is able to provide long term protection from transient voltage and other forms of surge even under extreme conditions. Furthermore, its cost effectiveness makes it a preferred choice for protection in various applications such as consumer electronics, automotive electronics, industrial control and telecom equipment.

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