B72242L0271K102

Varistor Voltage (Typ):	430V
Package / Case:	Encased Disc
Mounting Type:	Chassis Mount
Operating Temperature:	-25°C ~ 85°C (TA)
Capacitance @ Frequency:	2700pF @ 1kHz
Number of Circuits:	1
Energy:	550J
Current - Surge:	65kA
Varistor Voltage (Max):	473V
Series:	HighE
Varistor Voltage (Min):	387V
Maximum DC Volts:	350V
Maximum AC Volts:	275V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS - Varistors, MOVs

TVS (Transient Voltage Suppressors) are electronic components that protect sensitive components from damage due to sudden transient spikes. Varistors, also known as Voltage Dependent Resistors (VDRs), and Metal Oxide Varistors (MOVs) are two types of TVS devices designed for transient voltage surge protection. The B72242L0271K102 is a varistor commonly employed in surge protection circuits. It is a 5mm disk-shaped component with radial construction and an insulation disc that isolates the contact pins from one another. The B72242L0271K102 is an AC type of varistor, meaning it can handle both AC and DC voltages.

Application Field

There are many applications fields in which the B72242L0271K102 can be used. The varistor is commonly employed in power supply circuits, such as uninterruptible power supply (UPS), power factor correction (PFC), and solar energy conversion systems. It can be used in audio amplification systems to protect speakers, subwoofers, and amplifiers. Additionally, it can be used to protect circuit boards in domestic appliances and large industrial systems.

Working Principle

The working principle of the B72242L0271K102 is based on the behavior of a diode when a voltage is applied across its terminals. When the terminals of the varistor are subjected to a voltage, charge carriers start to move within the material due to the field effect. This causes a change in the resistance and a current flows through the device. When the voltage increases, the resistance decreases (negative coefficient of resistance) and the current flow through the device also increases. When the voltage exceeds a predetermined level, the varistor becomes highly conductive and conducts the surge current. Consequently, the energy it absorbs prevents the voltage from reaching a damaging level and thus allows to protect the connected components. The voltage at which the varistor begins to conduct is called the “clamping voltage”. Once the surge voltage has been clamped, the diode reverts to its low conductance state and the voltage returns to a safe level. This process continues until the surge is finished. Once the surge has ended, the diode returns to its original state and is ready to provide surge protection again.

Conclusion

The B72242L0271K102 is a varistor that provides reliable surge protection for a wide range of applications. It is highly resistant to transients and has a high clamping voltage. Additionally, the device is easy to install and it is durable enough to withstand multiple surge events. For all these reasons, it is a popular choice for system designers looking to implement surge protection in their applications.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description