SMCJ12A-QH Product Overview

Introduction

The SMCJ12A-QH is a high-quality transient voltage suppressor diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. This entry provides a comprehensive overview of the SMCJ12A-QH, including its product category, basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Product Category

The SMCJ12A-QH belongs to the category of transient voltage suppressor diodes, which are widely used in various electronic applications to protect against voltage spikes and surges.

Basic Information Overview

• Use: The SMCJ12A-QH is used to protect sensitive electronic devices from transient voltage events.
• Characteristics: It offers low clamping voltage, fast response time, and high surge current capability.
• Package: The diode is typically available in a surface mount package.
• Essence: Its essence lies in providing robust protection against voltage transients.
• Packaging/Quantity: The diode is commonly packaged in reels or trays, with varying quantities based on manufacturer specifications.

Specifications

• Peak Pulse Power: 1500W
• Breakdown Voltage: 12V
• Operating Voltage: 10.3V
• Clamping Voltage: 19.9V
• Peak Pulse Current: 58.6A
• Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The SMCJ12A-QH typically features a standard SMC (DO-214AB) package with two pins for surface mount installation.

Functional Features

• Transient Voltage Suppression: Effectively clamps transient voltages to protect downstream components.
• Fast Response Time: Rapidly responds to transient events to minimize potential damage.
• High Surge Current Capability: Can handle large surge currents without degradation.

Advantages and Disadvantages

Advantages

• Effective protection against transient voltage events
• Fast response time
• High surge current capability

Disadvantages

• Clamping voltage may be relatively high for some applications
• Requires careful consideration of installation and layout for optimal performance

Working Principles

The SMCJ12A-QH operates by diverting excessive transient current away from sensitive components, thereby limiting the voltage across them. When a transient event occurs, the diode rapidly conducts, providing a low-impedance path for the transient current to flow through, thus protecting the downstream circuitry.

Detailed Application Field Plans

The SMCJ12A-QH is commonly used in the following applications: - Power supply units - Communication equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• SMCJ5.0A-QH: Breakdown Voltage: 5V, Peak Pulse Power: 1500W
• SMCJ15A-QH: Breakdown Voltage: 15V, Peak Pulse Power: 1500W
• SMCJ24A-QH: Breakdown Voltage: 24V, Peak Pulse Power: 1500W
• SMCJ33A-QH: Breakdown Voltage: 33V, Peak Pulse Power: 1500W

In conclusion, the SMCJ12A-QH transient voltage suppressor diode offers effective protection against transient voltage events, making it an essential component in various electronic applications.

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