SMCJ18CA-HR

Product Overview

Category

The SMCJ18CA-HR belongs to the category of transient voltage suppressor diodes.

Use

It is used to protect sensitive electronic devices from voltage transients induced by lightning, inductive load switching, and electrostatic discharge.

Characteristics

• Fast response time
• Low clamping voltage
• High surge current capability
• RoHS compliant

Package

The SMCJ18CA-HR comes in a DO-214AB (SMC) package.

Essence

The essence of the SMCJ18CA-HR lies in its ability to provide robust overvoltage protection for electronic circuits.

Packaging/Quantity

It is typically available in reels or bulk packaging with varying quantities depending on the supplier.

Specifications

• Standoff Voltage: 15.3V
• Breakdown Voltage: 17V
• Maximum Clamping Voltage: 29.2V
• Peak Pulse Current: 50A
• Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

The SMCJ18CA-HR has two pins, anode, and cathode, which are denoted by the "+" and "-" symbols, respectively.

Functional Features

• Bi-directional clamping capability
• Low incremental surge resistance
• High temperature stability
• ESD protection

Advantages and Disadvantages

Advantages

• Provides effective protection against voltage transients
• Fast response time ensures minimal damage to protected circuits
• RoHS compliant, making it environmentally friendly

Disadvantages

• May require additional circuitry for comprehensive overvoltage protection in complex systems
• Limited to specific voltage ranges

Working Principles

The SMCJ18CA-HR operates based on the principle of avalanche breakdown, where it rapidly diverts excessive transient currents away from sensitive components, thereby limiting the voltage across the protected circuit.

Detailed Application Field Plans

The SMCJ18CA-HR is commonly used in: - Telecommunication equipment - Industrial control systems - Automotive electronics - Power supplies - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the SMCJ18CA-HR include: - P6KE18CA - 1.5SMC18CA - SMBJ18CA

In conclusion, the SMCJ18CA-HR is a vital component in safeguarding electronic devices from voltage transients, offering fast response times and high surge current capabilities. Its application spans across various industries, providing essential overvoltage protection. While it has certain limitations, its advantages make it a preferred choice for many electronic designs.

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