SMBJ18A-E3/5B

Product Overview

The SMBJ18A-E3/5B belongs to the category of transient voltage suppressor diodes (TVS diodes) and is commonly used for surge protection in electronic circuits. These diodes are characterized by their ability to rapidly respond to overvoltage events, diverting excessive current away from sensitive components. The SMBJ18A-E3/5B is packaged in a compact, surface-mount design, making it suitable for various applications where space is limited. Each package contains a specified quantity of diodes, ensuring convenient and efficient usage.

Specifications

• Voltage Rating: 18V
• Power Dissipation: 600W
• Package Type: DO-214AA (SMB)
• Operating Temperature Range: -55°C to 150°C
• RoHS Compliant: Yes

Detailed Pin Configuration

The SMBJ18A-E3/5B features a standard DO-214AA (SMB) package with two pins. Pin 1 is the cathode, while pin 2 serves as the anode.

Functional Features

• Transient Voltage Suppression: Effectively clamps transient overvoltage events to protect downstream components.
• Fast Response Time: Rapid reaction to overvoltage conditions ensures minimal impact on the circuit.
• Compact Design: Space-saving surface-mount package facilitates easy integration into circuit layouts.

Advantages and Disadvantages

Advantages

• Effective surge protection for sensitive electronic components
• Fast response time enhances system reliability
• Compact form factor ideal for space-constrained applications

Disadvantages

• Limited voltage rating compared to higher-end TVS diodes
• May require parallel or series configuration for higher voltage protection needs

Working Principles

The SMBJ18A-E3/5B operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage exceeds the rated threshold. This action effectively diverts the surge energy away from the protected circuit, safeguarding against potential damage.

Detailed Application Field Plans

The SMBJ18A-E3/5B finds extensive use in various electronic systems, including: - Telecommunications: Protects communication equipment from voltage transients induced by lightning strikes or power surges. - Industrial Control Systems: Safeguards control circuitry in industrial automation setups from electrical disturbances. - Automotive Electronics: Provides surge protection for automotive control modules and infotainment systems.

Detailed and Complete Alternative Models

For applications requiring different voltage ratings or power dissipation capabilities, alternative TVS diodes include: - SMBJ10A-E3/52 (10V, 600W) - SMBJ24A-E3/52 (24V, 600W) - SMBJ36A-E3/52 (36V, 600W)

In conclusion, the SMBJ18A-E3/5B transient voltage suppressor diode offers effective surge protection in a compact, surface-mount package, making it an essential component in safeguarding electronic circuits from overvoltage events.

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