B72220S0231K551

Product Overview

Category

The B72220S0231K551 belongs to the category of varistors, which are electronic components used to protect circuits from overvoltage conditions.

Use

This varistor is commonly used in electronic circuits to suppress voltage spikes and transient surges, thereby safeguarding sensitive components from damage.

Characteristics

• Voltage Suppression: Capable of clamping excessive voltage levels to protect connected devices.
• Fast Response Time: Reacts quickly to voltage fluctuations to provide immediate protection.
• Reliable Performance: Offers consistent performance under varying environmental conditions.
• Compact Package: Designed in a small form factor for easy integration into circuit designs.

Package

The B72220S0231K551 varistor is typically available in a cylindrical package with leads for soldering onto circuit boards.

Essence

The essence of this varistor lies in its ability to effectively mitigate voltage transients and protect electronic equipment from potential damage.

Packaging/Quantity

These varistors are usually packaged in reels or trays, with quantities varying based on manufacturer specifications.

Specifications

• Model: B72220S0231K551
• Maximum Allowable Voltage: 230V
• Nominal Varistor Voltage: 175V
• Peak Current Capability: 8000A
• Operating Temperature Range: -40°C to 85°C
• Capacitance: 100pF

Detailed Pin Configuration

The B72220S0231K551 varistor typically features two leads for connection to the circuit. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

• Voltage Clamping: When the voltage exceeds the varistor's threshold, it conducts current to limit the voltage across the circuit.
• Transient Suppression: Effectively absorbs and dissipates transient energy to protect downstream components.
• High Surge Current Handling: Capable of handling high surge currents without degradation.

Advantages and Disadvantages

Advantages

• Effective protection against voltage surges
• Fast response time
• Compact design for space-constrained applications

Disadvantages

• Limited lifespan under repetitive stress conditions
• Susceptible to thermal runaway if subjected to prolonged overvoltage conditions

Working Principles

The B72220S0231K551 varistor operates based on the principle of voltage-dependent nonlinear resistance. When the voltage across the varistor exceeds its nominal value, it enters a low-resistance state, diverting excess current away from the protected circuit.

Detailed Application Field Plans

Power Supplies

Used in power supply units to safeguard sensitive electronics from voltage spikes.

Telecommunications Equipment

Integrated into communication systems to protect against lightning-induced surges and transient events.

Industrial Control Systems

Deployed in industrial control panels to shield sensitive control circuitry from electrical disturbances.

Detailed and Complete Alternative Models

• B72220S0271K101: Similar varistor with higher voltage rating
• B72220S0331K101: Variant with lower capacitance for specific applications
• B72220S0401K101: Higher surge current capability for demanding environments

In conclusion, the B72220S0231K551 varistor offers reliable overvoltage protection for a wide range of electronic applications, despite its limitations under repetitive stress conditions. Its compact design and efficient transient suppression make it a valuable component in safeguarding sensitive electronics from voltage anomalies.

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