ESD5V3S1B02LRHE6327XTSA1

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TVS (Transient Voltage Suppressor) diodes are used in a variety of electronic applications to protect circuits from incoming voltage surges, including ESD (electrostatic discharge). The ESD5V3S1B02LRHE6327XTSA1 is a three-terminal surface-mount ESD diode that is versatile in its ability to provide protection in a range of applications. This article will discuss the application field and working principle of the ESD5V3S1B02LRHE6327XTSA1.

Application Field

The ESD5V3S1B02LRHE6327XTSA1 is designed to protect high-speed signal lines, and can be used as a single diode or as multiple diodes connected in a “daisy chain” for protection of multiple signal lines. It is commonly used in consumer electronics, automotive, medical, and industrial applications.

The ESD5V3S1B02LRHE6327XTSA1 provides effective protection for automotive ECUs (electronic control units), audio and video interfaces, and other various types of electronic equipment. It can also be used in data and communication systems, such as Ethernet and USB, to protect against electrostatic discharge (ESD).

Working Principle

The ESD5V3S1B02LRHE6327XTSA1 operates on a clamping principle. It is designed with two zener diodes connected in series with an N-channel MOSFET (metal-oxide-semiconductor field-effect transistor). The two diodes have different breakdown voltages; the first diode, connected to the anode, clamps the incoming surge voltage to a low value, while the second, connected to the cathode, clamps the surge voltage to a higher level.

When a voltage surge appears at the diode’s anode, the MOSFET turns on and diverts the incoming surge through its source terminal (connected to the diode’s cathode). This forces the surge current to flow through the diode’s second zener diode, which clamps it at a higher voltage level than the first diode, thereby limiting the voltage at the anode. The ESD5V3S1B02LRHE6327XTSA1 then dissipates the surge energy safely, protecting the circuit from damage.

The ESD5V3S1B02LRHE6327XTSA1 features a high surge current rating, low capacitance, and fast response time. It can protect against ESD strikes of up to 8 kV, and has an operating temperature range of -55°C to +105°C. Its maximum surge current rating is 30A, and its clamping voltage is 5.9V.

In summary, the ESD5V3S1B02LRHE6327XTSA1 is a versatile three-terminal surface-mount ESD diode that offers effective protection for a range of applications. It works on a clamping principle, utilizing two series-connected zener diodes and an N-channel MOSFET, and is capable of withstanding ESD strikes of up to 8 kV.

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