SA43A-E3/73 Circuit Protection

Voltage - Clamping (Max) @ Ipp:	69.4V
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:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	500W
Current - Peak Pulse (10/1000µs):	7.2A
Series:	TransZorb®
Voltage - Breakdown (Min):	47.8V
Voltage - Reverse Standoff (Typ):	43V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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Introduction to SA43A-E3/73 TVS - Diodes

SA43A-E3/73 is a type of TVS - diodes. It is a transient voltage suppression (TVS) diode that is used to protect sensitive electronic equipment against damaging voltage transients that could occur due to lightning, power switching, electrostatic discharge (ESD), and other electrical malfunction events. It is a unidirectional device that suppresses transients in the positive direction only.

Application Field of SA43A-E3/73

SA43A-E3/73 is commonly used in the data recording and telecommunications sectors, where it helps protect against voltage damage caused by transients. Additionally, it can be used to protect the sensitive components of electronic test and measurement equipment, audio/visual production equipment, medical monitoring devices, and various other data transmission and recording systems. It’s also suitable for use in automotive applications such as airbag controllers, ECUs, and sensors.Moreover, these diodes can be used for user equipment that is in direct connection with high-voltage power sources, applications where safety standards or customer requirements mandate protection against voltage transients, or wherever high-reliability electronic components are essential.

Working Principle of SA43A-E3/73

TVS - diodes like the SA43A-E3/73 are designed to protect against transients and other voltage surges. They work by redirecting disruptive energy away from sensitive components. When a voltage transient exceeds the rating of the TVS diode, the protection device will "clamp" the voltage at the rated value for a brief moment.The device is typically connected in parallel with the protected circuit, and its input current (IF) and peak pulse power (PD) will be limited by its properties. Its peak pulse voltage (VRWM) can be also determined by the diode’s parameters or conditions.

Conclusion

SA43A-E3/73 is a type of TVS - diodes. This device is mainly used to protect sensitive electronic components against voltage transients caused by lightning, power switching, ESD, and other electrical events. It works by clamping the voltage at its rated value when a transient exceeds its rating. This device is suitable for data recording, telecommunications, audio/visual, and medical applications, as well as in high-voltage environments where safety and reliability are of utmost importance.

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