SMLJ20CA-QH Encyclopedia Entry

Product Overview

The SMLJ20CA-QH belongs 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 SMLJ20CA-QH is designed to provide robust protection against transient overvoltage conditions in various electronic circuits. Its characteristics include high surge capability, low clamping voltage, and fast response time. The diode is typically packaged in a compact, surface-mount package and is available in various packaging quantities to suit different application needs.

Specifications

• Model: SMLJ20CA-QH
• Category: Transient Voltage Suppressor Diode
• Voltage Rating: 20V
• Peak Pulse Power: 3000W
• Package Type: DO-214AB (SMC)
• Packaging Quantity: Available in reels or bulk packaging

Detailed Pin Configuration

The SMLJ20CA-QH TVS diode typically features a standard DO-214AB (SMC) package with two pins. Pin 1 is the cathode, and pin 2 is the anode.

Functional Features

• Transient Voltage Suppression: Effectively clamps transient overvoltages to protect downstream components.
• Fast Response Time: Rapidly responds to voltage transients to minimize the risk of damage.
• High Surge Capability: Capable of handling high surge currents without degradation.

Advantages and Disadvantages

Advantages

• Effective protection against voltage spikes and surges
• Fast response time
• Compact surface-mount package for easy integration

Disadvantages

• Clamping voltage may not be as low as some other TVS diode models
• Limited to a maximum voltage rating of 20V

Working Principles

The SMLJ20CA-QH operates based on the principle of avalanche breakdown. When a transient overvoltage occurs, the diode rapidly conducts, diverting the excess current away from the protected circuit. This action effectively limits the voltage across the circuit, preventing damage to sensitive components.

Detailed Application Field Plans

The SMLJ20CA-QH is commonly used in various applications, including: - Telecommunications: Protecting communication equipment from lightning-induced surges - Consumer Electronics: Safeguarding sensitive electronic devices from power line transients - Automotive Electronics: Providing surge protection for automotive control systems

Detailed and Complete Alternative Models

For applications requiring different voltage ratings or package types, alternative TVS diode models include: - SMLJ5.0CA-QH: 5V rating, DO-214AB package - SMLJ15CA-QH: 15V rating, DO-214AB package - SMFJ20A-QH: 20V rating, SMA package

In conclusion, the SMLJ20CA-QH transient voltage suppressor diode offers effective protection against transient overvoltages in a compact, surface-mount package. Its fast response time and high surge capability make it suitable for a wide range of applications, although designers should consider its clamping voltage and maximum voltage rating when selecting a TVS diode for specific circuit protection requirements.

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