SMAJ400A

The SMAJ400A is a transient voltage suppressor diode designed to protect electronic circuits from voltage spikes and surges. It features a breakdown voltage of 400V and provides reliable overvoltage protection for sensitive components.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• Anode(A): Connect to the positive terminal or input of the circuit.
• Cathode(K): Connect to the ground or negative terminal of the circuit.

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the SMAJ400A diode for a visual representation.

Key Features

• Transient Voltage Suppression: The SMAJ400A offers protection against transient voltage spikes and surges, safeguarding sensitive components.
• 400V Breakdown Voltage: With a breakdown voltage of 400V, this diode can handle high-voltage transients effectively.
• Fast Response Time: The diode responds quickly to overvoltage events, providing rapid protection to the circuit.
• Low Leakage Current: It has a low leakage current even under normal operating conditions, ensuring minimal power loss.
• High Surge Current Capability: The SMAJ400A can withstand high surge currents, making it suitable for demanding applications.

Note: For detailed technical specifications, please refer to the SMAJ400A datasheet.

Application

• Power Supply Protection: Ideal for protecting power supplies and sensitive electronics from voltage transients.
• Telecommunication Systems: Used in telecommunication equipment to prevent damage from lightning-induced surges.
• Industrial Control: Suitable for industrial control systems where voltage spikes could affect operation.

Functionality

The SMAJ400A diode acts as a voltage clamp, limiting the voltage across the circuit by diverting excess current during transient events. It ensures the protection and reliability of connected components.

Usage Guide

• Placement: Connect the anode(A) to the positive terminal and the cathode(K) to the ground or negative terminal of the circuit.
• Operating Conditions: Ensure that the diode's voltage rating and power handling capabilities match the requirements of the protected circuit.

Frequently Asked Questions

Q: What is the maximum clamping voltage of the SMAJ400A?
A: The SMAJ400A has a clamping voltage of 648V under peak pulse current conditions.

Q: Can the SMAJ400A be used for ESD protection?
A: While primarily designed for transient voltage suppression, the SMAJ400A can also provide some level of ESD protection for sensitive components.