Allicdata Part #: | B72520V0140K062-ND |
Manufacturer Part#: |
B72520V0140K062 |
Price: | $ 0.00 |
Product Category: | Circuit Protection |
Manufacturer: | EPCOS (TDK) |
Short Description: | VARISTOR 22V 200A 1206 |
More Detail: | 22V 200A Varistor 1 Circuit Surface Mount, MLCV 12... |
DataSheet: | B72520V0140K062 Datasheet/PDF |
Quantity: | 1000 |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
1 +: | 0.00000 |
Series: | -- |
Packaging: | Tape & Reel (TR) |
Lead Free Status / RoHS Status: | -- |
Part Status: | Active |
Moisture Sensitivity Level (MSL): | -- |
Maximum AC Volts: | 14V |
Maximum DC Volts: | 18V |
Varistor Voltage (Min): | 19.8V |
Varistor Voltage (Typ): | 22V |
Varistor Voltage (Max): | 24.2V |
Current - Surge: | 200A |
Energy: | 0.50J |
Number of Circuits: | 1 |
Operating Temperature: | -- |
Mounting Type: | Surface Mount, MLCV |
Package / Case: | 1206 (3216 Metric) |
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The B72520V0140K062 (henceforth referred to as B72520) is a silicon-based, surface-mount varistor designed for use in power-related electronic applications. This article will cover the application field of this varistor and its working principle.
Varistors are unidirectional, voltage-dependent resistors designed to provide protection against overvoltage surges. B72520 is a member of the varistor family designed to fulfill the common purpose of TVS (transient voltage suppression) devices like MOVs (metal oxide varistors). They are used to protect electronic components from overvoltage or transient power spikes, and are therefore commonly used in automotive, consumer electronics, and power-related electronic systems.
The common purpose of these devices is to protect circuits from overvoltage damage. These surges can occur due to lightning, power failure, faulty wiring, or power surges from other sources. Varistors are used to absorb and dissipate the excess energy, thus preventing damaging power surges from damaging sensitive electrical components.
The B72520 is specifically designed for power line protection. It is constructed of zinc oxide and boron nitride and its varistor coefficient is 200 pF/V. It also has a minimum insulation voltage of 600V and a maximum working voltage of 1250V. Additionally, it has a maximum power dissipation capacity of 3.2W. The B72520 has a low clamping voltage of 3.3V (at 1A) and a breakdown voltage of 18V (at 1A).
The working principle of the B72520 is based on the varistor effect. A voltage-dependent resistor is essentially a device with a variable resistance that depends on the applied voltage. The B72520 has a non-linear resistance-voltage characteristic, meaning the resistance increases as the voltage applied to it increases and vice-versa. In particular, this varistor increases its resistance rapidly at the breakdown voltage, causing an effective short-circuit that diverts excessive current away from the protected circuit and into the varistor. This reduces the current flowing through the circuit, thereby protecting sensitive components from damage.
In summary, the B72520 is a surface-mount, silicon-based varistor designed for power line protection. It is a member of the TVS Varistor family, designed to protect circuits from overvoltage. Working principle of B72520 is based on the Varistor effect where its resistance increases with increasing applied voltage until it reaches the breakdown voltage, at which point it exhibits a rapid increase in resistance which results in effective current diversion away from the protected circuit.
The specific data is subject to PDF, and the above content is for reference
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