B72220S0500K551

Varistor Voltage (Typ):	82V
Package / Case:	Disc 20mm
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 105°C (TA)
Capacitance @ Frequency:	3800pF @ 1kHz
Number of Circuits:	1
Energy:	27J
Current - Surge:	6.5kA
Varistor Voltage (Max):	90.2V
Series:	StandarD
Varistor Voltage (Min):	73.8V
Maximum DC Volts:	65V
Maximum AC Volts:	50V
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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What is a B72220S0500K551
B72220S0500K551 is one of the most common types of varistor in the market. It is also known as a Transient Voltage Surge Suppressor (TVSS). A B72220S0500K551 is a voltage-dependent resistor used to protect electrical and electronic circuits against excessive transients (or speed of change in voltage). A TVSS device functions as a low-power, non-linear, and bidirectional switch that shorts transients to ground, thus protecting electrical circuits from dangerously high voltage.Applications of the B72220S0500K551
The B72220S0500K551 has many applications and it is most commonly used in the telecommunications and industrial industries. It can be used as a voltage regulator in telecommunications networks, such as in satellite and cable television systems. It can also be used in audio and radio equipment, computers, and even solar power systems, where power fluctuations can cause damage to sensitive circuitry.Working Principle of the B72220S0500K551
The B72220S0500K551 is composed of several materials, including zinc oxide. The zinc oxide forms a semiconductor-type resistive material, which is then surrounded by electrodes. The zinc oxide is essentially an ionic compound, which traps electrons. When an overvoltage is induced into the circuit, it causes the electrons to flow into the zinc oxide. This then causes the resistance of the zinc oxide to suddenly drop, which in turn activates the TVSS device. The TVSS device then shorts the overvoltage to ground, reducing its potential to harm electronic equipment and protecting the sensitive circuitry from destruction.Conclusion
The B72220S0500K551 is an important component of many electronics and telecommunications systems. With its ability to protect sensitive circuitry from dangerous voltages, it has become an indispensable tool in the industrial sector. Its voltage-dependent resistive material helps to limit the amount of overvoltages that enter a system, ensuring that sensitive circuitry remains safe.

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