VE09P00321K--

Varistor Voltage (Typ):	510V
Package / Case:	Disc 9mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TA)
Capacitance @ Frequency:	100pF @ 1kHz
Number of Circuits:	1
Energy:	45J
Current - Surge:	1.75kA
Varistor Voltage (Max):	561V
Series:	--
Varistor Voltage (Min):	459V
Maximum DC Volts:	420V
Maximum AC Volts:	320V
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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VE09P00321K Application Field And Working Principle

VE09P00321K is a type of TVS (Transient Voltage Suppression) device, also known as a Varistor or MOV (Metal Oxide Varistor). It is a device designed to protect circuits and equipment from damaging electrical overvoltage conditions. It is commonly used in applications such as Lightning and Surge Protection, Automotive Power System, Industrial Automation, Medical Equipment, Telecommunication, and many other high reliability applications.TVS devices are semiconductor components consisting of an arrangement of metal oxide layers that create a PN junction. This junction acts as a voltage-dependent switch, allowing current to flow freely until a predetermined voltage threshold is reached. When the supply voltage exceeds this threshold, the device rapidly switches from a low-resistance (conducting state) to a high-resistance (non-conducting) state after a certain time interval. This effectively “shorts out” the current and dissipates the excess voltage, thereby protecting the connected equipment.The VE09P00321K is rated for up to 315V maximum voltage (240VAC rated) and is suitable for use in overhead power lines. It has a very low leakage current of 0.4V, which makes it suitable for sensitive application that require a low leakage current. It is also RoHS compliant, making it safe to use in electronic components and applications that use sensitive materials.The working principle of the VE09P00321K is based on its Metal Oxide Varistor (MOV) construction. It uses a series of specially designed metal oxide plates which form a PN junction. When a voltage is applied, the MOV will gradually change its resistance as the voltage increases. This allows current to flow through the device until a predetermined threshold is exceeded at which point the resistance rapidly increases and shorts the current, dissipating the excess voltage and protecting the connected circuit.The VE09P00321K is ideally suited for Lightning and Surge Protection applications and for use in high-reliability equipment and systems. It offers excellent protection from voltage transients and from inrush current, and is capable of withstanding momentary power surges of up to 315V. Its durability and reliability make it ideal for use in all types of equipment, from medical to industrial applications.In conclusion, VE09P00321K is a type of TVS device, also known as a Varistor or MOV, that is highly efficient at protecting circuits and equipment from voltage transients and inrush current. It is suitable for use in Lightning and Surge Protection applications, as well as for use in high-reliability equipment and systems. It offers excellent protection from voltage transients and from inrush current, and is capable of withstanding momentary power surges of up to 315V. It is also RoHS compliant, making it safe to use in electronic components and applications that use sensitive materials.

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