SMBJ22C - Product Overview and Specifications

Introduction

The SMBJ22C is a diode belonging to the category of transient voltage suppressor (TVS) diodes. These diodes are widely used for protecting sensitive electronic components from voltage spikes and surges. The SMBJ22C diode exhibits specific characteristics, packaging, and quantity specifications that make it suitable for various applications.

Basic Information Overview

• Category: Transient Voltage Suppressor (TVS) Diode
• Use: Protection against voltage spikes and surges in electronic circuits
• Characteristics: Fast response time, low clamping voltage, high surge current capability
• Package: SMB (DO-214AA)
• Essence: Provides transient voltage protection to sensitive electronic components
• Packaging/Quantity: Available in tape and reel packaging, with quantities varying based on manufacturer specifications

Specifications

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Current - Peak Pulse (10/1000µs): 34.4A
• Power - Peak Pulse: 600W
• Type: Zener
• Unidirectional Channels: 1
• Polarization: Unidirectional

Detailed Pin Configuration

The SMBJ22C diode typically consists of two pins, anode, and cathode. The anode is connected to the positive side of the circuit, while the cathode is connected to the ground or negative side.

Functional Features

• Transient Voltage Suppression: Effectively clamps transient overvoltage to protect downstream components.
• Fast Response Time: Rapid reaction to voltage transients ensures minimal impact on the protected circuit.
• Low Clamping Voltage: Limits the voltage across the protected load during transient events.

Advantages and Disadvantages

Advantages

• Effective protection against voltage spikes and surges
• Fast response time
• Low clamping voltage

Disadvantages

• Can degrade over time with repeated exposure to transient events
• May introduce some capacitance into the circuit

Working Principles

The SMBJ22C operates based on the principle of avalanche breakdown. When a voltage spike occurs, the diode rapidly conducts, diverting excess current away from the protected circuit. This action prevents the voltage from exceeding a safe threshold, safeguarding the connected electronics.

Detailed Application Field Plans

The SMBJ22C diode finds extensive use in various applications, including: - Power supply units - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

• Alternative Model 1: SMBJ24CA

  • Voltage - Reverse Standoff (Typ): 24V
  • Voltage - Breakdown (Min): 26.7V
  • Voltage - Clamping (Max) @ Ipp: 38.9V
  • Current - Peak Pulse (10/1000µs): 32.6A
  • Power - Peak Pulse: 600W

• Alternative Model 2: SMBJ26C

  • Voltage - Reverse Standoff (Typ): 26V
  • Voltage - Breakdown (Min): 28.9V
  • Voltage - Clamping (Max) @ Ipp: 42.1V
  • Current - Peak Pulse (10/1000µs): 30.8A
  • Power - Peak Pulse: 600W

In conclusion, the SMBJ22C diode serves as a crucial component in protecting electronic circuits from voltage transients. Its fast response time, low clamping voltage, and high surge current capability make it a reliable choice for various applications.

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