SMBJ14CA-HR

Introduction

The SMBJ14CA-HR is a specialized electronic component belonging to the category of transient voltage suppressor (TVS) diodes. These diodes are commonly used to protect sensitive electronic circuits from voltage spikes and transients. The SMBJ14CA-HR is designed to provide robust protection against transient overvoltage events, making it an essential component in various electronic systems.

Basic Information Overview

• Category: Transient Voltage Suppressor (TVS) Diode
• Use: Protection against voltage spikes and transients
• Characteristics: Fast response time, low clamping voltage, high surge current capability
• Package: SMB (DO-214AA)
• Essence: Safeguarding electronic circuits from transient overvoltage events
• Packaging/Quantity: Available in tape and reel packaging, quantity varies by manufacturer

Specifications

• Part Number: SMBJ14CA-HR
• Peak Power Dissipation: 600W
• Breakdown Voltage: 14V
• Operating Voltage: 12.1V
• Maximum Reverse Leakage Current: 1μA
• Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The SMBJ14CA-HR follows the standard pin configuration for SMB diodes, with two leads for connection to the circuit board.

Functional Features

• Transient Voltage Suppression: Rapidly clamps transient overvoltages to safe levels, protecting downstream components.
• Low Clamping Voltage: Ensures minimal impact on the protected circuit during overvoltage events.
• Fast Response Time: Reacts quickly to transient events, minimizing the risk of damage to sensitive electronics.

Advantages and Disadvantages

Advantages

• Effective protection against voltage spikes and transients
• Compact form factor suitable for space-constrained applications
• High surge current capability for enhanced reliability

Disadvantages

• Limited to specific voltage ratings, may require multiple diodes for broader protection range
• Can introduce some capacitance to the protected circuit, affecting high-frequency performance

Working Principles

The SMBJ14CA-HR operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage across it exceeds the breakdown voltage. This action effectively diverts the excess energy away from the protected circuit, safeguarding sensitive components.

Detailed Application Field Plans

The SMBJ14CA-HR finds extensive use in various electronic systems, including: - Power Supplies: Protecting voltage regulators, power converters, and other critical components from voltage transients. - Communication Equipment: Safeguarding sensitive communication interfaces and signal processing circuits from electrical disturbances. - Automotive Electronics: Providing surge protection for automotive control units, infotainment systems, and onboard sensors.

Detailed and Complete Alternative Models

• SMBJ10A-HR: Similar TVS diode with a lower breakdown voltage of 10V
• SMBJ16CA-HR: TVS diode with a higher breakdown voltage of 16V, suitable for different application requirements
• SMBJ20A-HR: Higher voltage rating TVS diode for applications requiring greater transient voltage protection

In conclusion, the SMBJ14CA-HR TVS diode plays a crucial role in protecting electronic circuits from transient overvoltage events. Its fast response time, low clamping voltage, and high surge current capability make it a valuable component in various electronic systems, ensuring the reliability and longevity of sensitive electronics.

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