ERZ-E11B911CS

Varistor Voltage (Typ):	910V
Package / Case:	Disc 14mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Capacitance @ Frequency:	240pF @ 1kHz
Number of Circuits:	1
Energy:	255J
Current - Surge:	5kA
Varistor Voltage (Max):	1.001kV
Series:	ZNR®
Varistor Voltage (Min):	819V
Maximum DC Volts:	745V
Maximum AC Volts:	550V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

ERZ-E11B911CS is a type of TVS (Transient Voltage Suppressor) that has varistors, MOVs (Metal Oxide Varistor), and ESD (Electro-Static Discharge) diodes incorporated onto a single component. This type of device is used to provide surge protection against Voltage transients that can occur in electronic circuits due to lighting strikes or improper design.

Application field

The ERZ-E11B911CS can be widely used in applications such as automotive, industrial, and consumer electronics due to its ability to provide protection against voltage transients that can be induced by sources both inside and outside the system. This device specifically is designed to be used in electrically noisy environments where traditional surge protection solutions may not be adequate to handle the level of noise present.

Working Principle

The working principle of the ERZ-E11B911CS is based on the protection of both Sudden Voltage Transients and Long-term Over/Under Voltages. For Sudden Voltage Transients, the Varistor utilized by the ERZ-E11B911CS acts like an energy sink and absorbs all high-frequency current transients by having a very low resistance to low-frequency currents. The MOV is also used for the protection of sudden transient voltage, and acts to limit the rise/fall time of the voltage spikes. For Long-term Over/Under Voltages, the ESD (Electro-Static Discharge) diodes utilised by the ERZ-E11B911CS act as a one-way valve, allowing current to flow in one direction and not allowing it to return back the other way. This prevents the device from being damaged by a sustained over voltage as the ESD diodes will act to limit the voltage by shunting current.

Conclusion

The ERZ-E11B911CS provides a versatile and reliable way of protecting circuits from surges caused by both internal/external sources. The device incorporates varistors, MOVs, and ESD diodes that act to both absorb sudden voltage transients and prevent over/under voltages through the use of the ESD diodes. This type of device is specifically designed to be used in electrically noisy environments and can provide robust protection against both short-term and long-term issues.

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