Voltage - Clamping (Max) @ Ipp:	40.85V
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):	13.1A
Series:	SA
Voltage - Breakdown (Min):	25.29V
Voltage - Reverse Standoff (Typ):	24V
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

The TVS diode, also known as Transient Voltage Suppressor (TVS), is a bi-directional device used to protect against overvoltage and can be configured to act as a protector, a clamp, or a diverter. SA24 is one of the most popular and basic TVS diodes and is widely used in small industry applications. This article will provide an overview of the SA24, its application field and working principle.

Application Field

The SA24 TVS diode is a versatile device that can be used in a variety of applications. It is designed to be used as an alternative to the Zener diode and the advantage of using SA24 is its superior surge protection. SA24 can be used in all types of circuits where protection from transient overcurrents is needed. It is typically used in automotive applications, such as protecting electronic control modules (ECMs) from voltage spikes caused by inductive loads like starter motors. SA24 can also be used in telecommunications, aerospace, industrial and consumer applications to protect sensitive electronics from power surges and noise. Some of the common applications of SA24 include:

• Industrial Controls: SA24 can provide transient voltage protection to industrial control systems against voltage surges caused by lightning and power outages.
• Automotive Electronics: SA24 is used to protect automotive electronics from voltage spikes created by load switching within the system.
• Lighting Protection: SA24 can provide surge protection to outdoor lighting systems from transient power surges.
• Telecommunications: SA24 is used to protect sensitive communications equipment from voltage and noise spikes.

Working Principle

The working principle of the SA24 TVS diode is based on the Zener diode principle but has improved performance and efficiency. When the SA24 is exposed to transient voltages, it will act as a voltage clamp and prevent the voltage from exceeding a predefined level. This allows the protected device to remain safe from overvoltage and undercurrent situations.The SA24 utilizes a special internal high capacitance to achieve its surge protection performance. During a surge, this capacitance is internally discharged, dissipating the surge energy. During normal operation, the SA24 exhibits no voltage drop, thus ensuring higher efficiency.The SA24 has a wide operating voltage range and can be used for both low-voltage and high-voltage applications. The primary application of the SA24 is for the protection of sensitive electronics from voltage spikes caused by inductive loads. The diode can also be used to protect against Electrostatic Discharge (ESD) and surge currents caused by lightning.

Conclusion

The SA24 TVS diode is a versatile semiconductor device used to protect a wide range of electric and electronic equipment from transient voltages and spikes. It offers superior protection performance compared to conventional Zener diodes and can be used in various applications, such as automotive, telecommunications, and consumer. The SA24 utilizes an internal high capacitance which is discharged during a surge, dissipating the surge energy and protecting equipment from transient overvoltage and undercurrent.

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