SA20CA-E3/73 Circuit Protection

Voltage - Clamping (Max) @ Ipp:	32.4V
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):	15.4A
Series:	TransZorb®
Voltage - Breakdown (Min):	22.2V
Voltage - Reverse Standoff (Typ):	20V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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SA20CA-E3/73 TVS - Diodes Application Field and Working Principle

Transient voltage suppressors (TVS) are an important type of surge protection device that helps protect circuit boards from overvoltage damage. The SA20CA-E3/73 TVS is a widely used device used in various applications such as telecommunications, automotive electronics, computer/data centers, networking devices, industrial equipment and medical instruments. This article will explain the application and working principle of the SA20CA-E3/73.The SA20CA-E3/73, a unidirectional diode TVS, is a non-destructive low-clamping voltage TVS that is designed for stress protection. Its low clamping voltage makes it an ideal choice for protecting sensitive components against overvoltage damage and it is also capable of withstanding high surge current up to 2,500 amperes. It is RoHS, UL and ESD compliant and comes in a small, hermetically sealed 8-pin SOD-323 package.In terms of application field, the SA20CA-E3/73 is commonly used in telecommunications, automotive electronics, computer/data centers, networking devices, industrial equipment and medical instruments. In telecommunications, they are used in linecards and switchboards for transient protection. In automotive electronics, they serve as spike suppressors for ECU/TCU circuit boards. In computers/data centers, they protect hard drive controllers, memory controllers and other sensitive data components from overvoltage damage. In networking devices, they protect against ESD surges in LAN ports, hubs and other connection ports. In industrial equipment, they protect against overvoltages in relays, assembly processes and various control panels. In medical instruments, they are used in various medical devices including ECG, EEG and x-ray equipment.The working principle behind the SA20CA-E3/73 TVS is quite simple. It is designed to absorb overvoltage transients by providing a low-clamping voltage when exposed to a specified surge level. The TVS works by using a Zener diode on the anode side (top side) of the device, which helps dissipate the excess voltage as heat. The cathode side (bottom side) of the TVS provides a low-resistance path for the excess current to flow, thus preventing damage. When the incoming transient voltage exceeds a certain level, the Zener diode is triggered and conducts the transient current away from the protected circuit. The excess energy is dissipated as heat and the SA20CA-E3/73 clamps the voltage at a safe level quickly and effectively, protecting the circuit from any further damage.The SA20CA-E3/73 TVS is a very versatile device that is widely used in various applications. It is a reliable and cost-effective option for protecting sensitive components against overvoltage damage, and its low clamping voltage makes it an ideal choice for applications such as telecommunications, automotive electronics, computer/data centers, networking devices, industrial equipment and medical instruments.

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