SA20-E3/54

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:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	500W
Current - Peak Pulse (10/1000µs):	14A
Series:	TransZorb®
Voltage - Breakdown (Min):	22.2V
Voltage - Reverse Standoff (Typ):	20V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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TVS - Diodes

Transient Voltage Suppressor (TVS) diodes are a light-weight, low cost, and reliable replacement for gas discharge tubes (GDTs). They are designed to protect a circuit, device, or system from dangerous transient voltage overshoots. This article will explain the application field and working principle of the SA20-E3/54 TVS diode. The SA20-E3/54 is a unidirectional transient voltage suppression diode. It is designed to reduce transient voltages in the 0 to 52V range. This device is used in many different applications such as electronic devices exposed to lightning, power line surge, power cross, spike, and other transients. Additionally, the SA20-E3/54 is suitable for automotive, communication, and computing applications.The SA20-E3/54 is designed to absorb transient overvoltages from 0V to 52V and clamp them to less than 42V when subjected to an 8/20µs (microsecond) surge waveform with a repetition rate of 1 per minute. Under a maximum surge current of 30A, the device has an average clamping voltage of 36V and a peak current of 60A. The device also has a low standoff voltage, making it ideally suited for circuits requiring protection from surges with a low operating voltage.The working principle of the SA20-E3/54 diode is based on a specific type of diode, the Avalanche diode. This type of diode is specially designed to handle large currents and voltages. When a large voltage is applied to the diode, it has the ability to “break down” and switch between an On and Off state. This action is known as the Avalanche effect. During the breakdown, the diode is able to dissipate a large amount of current while maintaining a clamped voltage.The SA20-E3/54 is designed with an optimized range of voltage, current, and time characteristics. When the diode encounters a transient voltage, the voltage will be initially clamped for a short duration of time. The device will then start to slowly “unclamp”, allowing the transient voltage to gradually return to its original value. This slow unclamping process helps protect the circuit from secondary transients that could be produced by the primary transient. The SA20-E3/54 is an excellent choice for protecting circuits against transient voltage overshoots. The device has a low clamping voltage, wide operating range, low standby voltage, and an optimized range of current, voltage, and time characteristics. The device is also reliable, light weight, and cost effective, making it an ideal choice for most applications.

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