SMA5J18CA-E3/5A

Product Overview

Category

The SMA5J18CA-E3/5A belongs to the category of TVS (Transient Voltage Suppressor) diodes.

Use

It is used for surge protection in electronic circuits, particularly in applications where protection against transient voltage spikes is crucial.

Characteristics

• Voltage Suppression: Capable of suppressing high voltage transients.
• Fast Response Time: Provides quick response to transient events.
• Low Clamping Voltage: Ensures minimal impact on the protected circuit during a transient event.
• Compact Package: Small form factor for easy integration into circuit designs.

Package

The SMA5J18CA-E3/5A is typically available in a surface-mount package, making it suitable for automated assembly processes.

Essence

The essence of SMA5J18CA-E3/5A lies in its ability to safeguard sensitive electronic components from voltage surges and transients.

Packaging/Quantity

It is commonly supplied in reels or tubes, with quantities varying based on manufacturer specifications.

Specifications

• Peak Pulse Power: 5000W
• Standoff Voltage: 18V
• Breakdown Voltage: 20V
• Clamping Voltage: 29.2V
• Operating Temperature Range: -55°C to +150°C
• Package Type: SMA

Detailed Pin Configuration

The SMA5J18CA-E3/5A typically features two pins for surface-mount soldering onto the PCB. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

• Transient Voltage Suppression: Provides protection by diverting excessive voltage away from sensitive components.
• Fast Response: Rapidly responds to transient events to limit the voltage spike duration.
• Low Clamping Voltage: Limits the voltage across the protected circuit during a transient event.

Advantages and Disadvantages

Advantages

• Effective surge protection for sensitive electronics.
• Fast response time.
• Compact form factor for easy integration.

Disadvantages

• May require additional circuitry for comprehensive surge protection in complex systems.
• Limited to specific voltage and power ratings.

Working Principles

The SMA5J18CA-E3/5A operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage exceeds the breakdown voltage, thereby protecting the downstream circuitry.

Detailed Application Field Plans

The SMA5J18CA-E3/5A finds application in various fields, including: - Telecommunications: Protects communication equipment from voltage surges. - Automotive Electronics: Safeguards vehicle electronics from transient events. - Industrial Control Systems: Provides surge protection for control and monitoring systems.

Detailed and Complete Alternative Models

• SMA6J18CA-E3/5A: Similar TVS diode with higher peak pulse power rating.
• SMA5J15CA-E3/5A: Lower standoff voltage variant for specific applications.

In conclusion, the SMA5J18CA-E3/5A TVS diode offers effective surge protection with its fast response time and low clamping voltage, making it suitable for a range of electronic applications.

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