SP723ABT

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Voltage - Clamping:	--
Technology:	Mixed Technology
Number of Circuits:	6
Applications:	General Purpose
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC

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Introduction

SP723ABT is a type of Transient Voltage Suppressor (TVS) device referred to as a Mixed Technology TVS. This type of device is used to protect sensitive electrical circuits and equipment from damaging transients, such as those caused by electrostatic discharge, lightning, or DC transients. This document will explore the application field and working principle of the SP723ABT.

Application Field

The SP723ABT is a high-speed, high-efficiency transient voltage suppressor. It is designed to protect a wide range of electronic devices, such as power supplies, computers, and telecommunications equipment, from transient voltages. The device contains two subcircuits that work together to provide maximum protection. The first subcircuit, a Zener diode, offers protection against low-intensity transients. This diode is capable of handling transients up to 100 Volts. The second subcircuit, a Metal Oxide Varistor (MOV), provides protection against higher intensity transients, such as those caused by electrostatic discharge or lightning. The MOV has a clamping voltage of up to 400 Volts. This allows the device to protect equipment against damaging transients with voltages above 100 Volts.

Working Principle

The SP723ABT is a voltage-regulated device, meaning that it works on the principle of allowing excess voltage or current to pass through it. When a transient occurs, the voltage across the device increases from its idle state. As this voltage passes through the Zener diode, the voltage is regulated so that it does not exceed the diode\'s breakdown voltage. At the same time, the voltage across the MOV also increases. This increase in voltage causes the MOV to undergo an electro-mechanical breakdown, resulting in the formation of an internal current path. This current path effectively clamps the voltage across the device to its breakdown voltage. Once the transient has passed, the MOV relaxes and the device returns to its idle state.

Conclusion

The SP723ABT is a Mixed Technology TVS device designed to protect sensitive electrical circuits and equipment from damaging transients. It features two subcircuits, a Zener diode and a MOV, that work together to provide maximum protection. The Zener diode offers protection against low-intensity transients, while the MOV handles higher intensity transients. The device works by allowing excess voltage or current to pass through it and then clamping it to its breakdown voltage.

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