Voltage - Clamping (Max) @ Ipp:	35.8V
Supplier Device Package:	DO-204AC (DO-15)
Package / Case:	DO-204AC, DO-15, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	500W
Current - Peak Pulse (10/1000µs):	14A
Series:	Automotive, AEC-Q101, TransZorb®
Voltage - Breakdown (Min):	22.2V
Voltage - Reverse Standoff (Typ):	20V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction of TVS - Diodes

Transient voltage suppressor (TVS) diodes, also known as surge protected diodes, are electronic devices which are especially designed to protect circuits from high-voltage transient current, high-energy surges, and signal line noise. It normally consists of a bidirectional silicon avalanche diode integrated in a solenoid package.Essentially, transient voltage suppressor diodes are designed primarily to protect sensitive, semiconductor-based electronics from power transients, or electrical surges, such as electrostatic discharge (ESD) lightning, and other vulnerability caused by external events.

SA20CHE3/54 Application Field and Working Principle

SA20CHE3/54 is a specific type of transient voltage suppressor (TVS) diode which can be mostly found in the different industrial and consumer applications, such as aerospace, and certain kinds of consumer appliance applications. The breakdown voltage of SA20CHE3/54 is 20 V which is suitable for the most of the applications. It is available in either DO-203AB or SMA packages. Its small size allows it to fit conveniently in any small-spaced location.SA20CHE3/54 typically operates at an avalanche breakdown voltage dependent on the applied voltage. As a result, when the applied voltage and the diode junction voltage are equal, the high-speed avalanche current runs through the diode and the surge is discharged. Then the junction recovers its original state and the diode achieves the preset voltage. SA20CHE3/54 is designed specifically for protecting the circuit from over-voltage transient and current surges. It has an excellent electromagnetic immunity and low capacitance. Moreover, it also features high reliability and a high surge peak power of 200 W.Furthermore, the peak reverse power dissipation capability of SA20CHE3/54 is greater than 600 W and the peak pulses current can be as high as 8.3 A. This high peak power capability makes it suitable for use in some aerospace and other high-power applications.

Conclusion

In conclusion, transient voltage suppressor (TVS) diode is a special purpose diode that is designed for protection of electronic circuits from high voltage transients and electromagnetic interference (EMI). SA20CHE3/54 is one type of TVS diode which is suitable for various applications, such as aerospace and high-power applications. It has a maximum breakdown voltage of 20 V and can provide a peak power of 200 W, making it an ideal choice for these applications. In addition, the diode also features low capacitance, high reliability, and a peak reverse power dissipation capability of more than 600 W.

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