824520201 Circuit Protection

Voltage - Clamping (Max) @ Ipp:	32.4V
Supplier Device Package:	DO-214AA
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	600W
Current - Peak Pulse (10/1000µs):	18.6A
Series:	WE-TVSP
Voltage - Breakdown (Min):	23.35V (Typ)
Voltage - Reverse Standoff (Typ):	20V (Max)
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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824520201 TVS - Diodes Application Field and Working Principle

TVS - Diodes, also known as Transient Voltage Suppressors (TVS), are a type of electronic component which protect sensitive electronic circuits from high-voltage transients, also known as Electrostatic Discharge (ESD). TVS diodes are small, discrete electronic components with two pins (anode and cathode) that act as miniature one-way gates, that allow current to flow in only one direction. TVS diodes are often used to protect circuits from a variety of transients, such as over voltage, Electrostatic Discharge (ESD) induced transients, Voltage spike, electrical noise, lightning, static electricity, and surges.The application field of a TVS diode can be divided into three major sectors: industrial, commercial, and consumer. In industrial applications, diodes protect circuits from both high-voltage transients (such as those generated due to Lightning) and fast moving transients caused by electrostatic discharges or induction. In commercial applications, TVS diodes are primarily used for products which need surge protection in order to be reliable and long lasting, such as medical equipment, HVAC systems, and CCTV systems. Finally, in consumer applications, TVS diodes are used to protect the circuitry of consumer electronics which are prone to external power surges, including smartphones, tablets, gaming systems, cameras, and home appliances.The working principle of a TVS diode is relatively simple; the diode acts as a blocking valve which prevents the passage of any current which is greater than a certain threshold value, while allowing current which is below the threshold to freely pass. As the current builds up, the diode starts to conduct, releasing the excess current back to the source thus limiting the voltage across the device. This limitation is referred to as “clamping” which limits the voltage to a safe value, thus protecting the circuitry against damage due to transients and surge voltages.TVS diodes typically comprise of a Silicon body with a Zener diode gate inside it. They are made from a variety of materials, including Silicon, GaAs, and SiC. When exposed to a surge or transient voltage, the silicon body of the diode momentarily changes to allow a certain amount of current to flow, while the zener diode gate regulates the amount of current which can flow, thus protecting the circuit from transients.When selecting a suitable TVS diode for a particular application, there are several key factors to consider; including the breakdown voltage, the clamping voltage, the maximum peak pulse current, the response time, the operating temperature range, and the package compatibility. The breakdown voltage is the maximum surge voltage that the diode can tolerate before conducting; the clamping voltage is the maximum voltage that the diode can provide before conducting; the peak pulse current is the maximum current that the diode can handle without damage; the response time is how quickly the diode can respond to a transient; the operating temperature range is the temperature range at which the diode can operate; and finally, the package compatibility is whether or not the diode fits the package size of the circuit it is protecting.In conclusion, TVS diodes are a vital component in protecting sensitive electronic circuits from high-voltage transients and/or surges. They come in a variety of form factors and materials, and can be tailored to the specific requirements of the circuit which they are protecting. By taking careful consideration to the key factors listed above, a suitable diode should be selected for a given application, thus providing the circuit with the protection it needs.

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