SMAJ120A-M3/5A

Product Category

The SMAJ120A-M3/5A belongs to the category of semiconductor devices, specifically within the realm of transient voltage suppressor diodes.

Basic Information Overview

• Use: The SMAJ120A-M3/5A is primarily used for surge protection in electronic circuits and systems.
• Characteristics: It offers high reliability, fast response time, and low clamping voltage, making it suitable for safeguarding sensitive components from voltage spikes.
• Package: The device is typically available in a DO-214AC (SMA) package.
• Essence: Its essence lies in providing robust transient voltage suppression capabilities.
• Packaging/Quantity: The SMAJ120A-M3/5A is commonly packaged in reels or trays, with quantities varying based on manufacturer specifications.

Specifications

• Voltage Rating: 120V
• Peak Pulse Power: 400W
• Operating Temperature Range: -55°C to +150°C
• Breakdown Voltage: 133V to 147V
• Reverse Standoff Voltage: 120V
• Forward Voltage Drop: 1.0V at 10A

Detailed Pin Configuration

The SMAJ120A-M3/5A typically features two pins, with the anode connected to the positive side and the cathode connected to the negative side of the circuit.

Functional Features

• Transient Voltage Suppression: Effectively clamps transient overvoltage to protect downstream components.
• Fast Response Time: Rapid reaction to voltage surges ensures minimal impact on the system.
• Low Clamping Voltage: Limits the voltage across the protected circuit to prevent damage.

Advantages and Disadvantages

• Advantages:
  • Reliable surge protection
  • Fast response time
  • Low clamping voltage
• Disadvantages:
  • Limited to specific voltage ratings
  • Requires careful consideration of reverse standoff voltage

Working Principles

The SMAJ120A-M3/5A operates by diverting excess transient voltage away from sensitive components, thereby preventing damage due to voltage spikes. When a surge occurs, the diode rapidly conducts, shunting the excess energy to ground and maintaining the voltage across the protected circuit within safe limits.

Detailed Application Field Plans

The SMAJ120A-M3/5A finds extensive use in various applications, including: - Telecommunications: Protecting communication equipment from lightning-induced surges. - Automotive Electronics: Safeguarding vehicle electronics from voltage transients. - Industrial Control Systems: Ensuring reliable operation of control and monitoring devices in industrial settings.

Detailed and Complete Alternative Models

• P6KE120A: Similar transient voltage suppressor diode with a different package type.
• 1.5KE120A: Higher power handling capability with similar voltage rating.

In conclusion, the SMAJ120A-M3/5A serves as a crucial component in protecting electronic systems from transient voltage events, offering reliable performance and fast response characteristics. Its application spans across diverse industries, ensuring the integrity of sensitive electronics in the face of voltage surges.

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