SMCJ170HE3/57T - Product Overview and Analysis

Introduction

The SMCJ170HE3/57T is a high-performance TVS (transient voltage suppressor) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events. This entry will provide a comprehensive overview of the product, including its category, use, characteristics, package, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Product Category and Use

The SMCJ170HE3/57T belongs to the category of semiconductor devices and is primarily used for surge protection in various electronic circuits and systems. Its main purpose is to divert excessive current away from sensitive components during transient voltage events, thereby safeguarding them from damage.

Characteristics

• Voltage Suppression: The SMCJ170HE3/57T is capable of suppressing transient voltages up to 170V.
• Fast Response Time: It offers a rapid response time to transient events, ensuring effective protection for connected devices.
• Low Clamping Voltage: The diode maintains a low clamping voltage, minimizing the impact of transient events on the protected circuitry.

Package and Quantity

The SMCJ170HE3/57T is typically available in a compact, surface-mount package, making it suitable for integration into modern electronic designs. It is commonly supplied in reels or tubes, with quantities varying based on manufacturer specifications.

Specifications

• Peak Pulse Power: 1500W
• Breakdown Voltage: 188V
• Operating Temperature Range: -55°C to 150°C
• Package Type: SMC (DO-214AB)

Pin Configuration

The SMCJ170HE3/57T follows a standard SMC package configuration, with two leads for connection to the circuitry. The pinout is as follows: 1. Anode 2. Cathode

Functional Features

• Bidirectional Protection: The diode provides bidirectional protection, allowing it to safeguard against both positive and negative transient events.
• High Surge Capability: It can handle high surge currents, making it suitable for applications exposed to severe transient conditions.
• Low Leakage Current: The device exhibits low leakage current, ensuring minimal power dissipation during normal operation.

Advantages and Disadvantages

Advantages

• Effective protection against transient voltage events
• Fast response time
• Compact and surface-mountable package
• Bidirectional protection capability

Disadvantages

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

Working Principles

The SMCJ170HE3/57T operates based on the principle of avalanche breakdown, where it rapidly conducts excess current away from the protected circuit when a transient voltage event occurs. This action helps limit the voltage across the circuit, preventing damage to sensitive components.

Application Field Plans

The SMCJ170HE3/57T finds extensive use in various applications, including: - Telecommunication equipment - Industrial control systems - Automotive electronics - Consumer electronics - Power supplies

Alternative Models

For users seeking alternative options, several comparable TVS diodes are available in the market, such as: - P6KE170CA: A unidirectional TVS diode with similar voltage suppression capabilities - SMCJ188A: Offers bidirectional protection with a slightly higher breakdown voltage - 1.5SMC170CA: Suitable for applications requiring higher surge handling capacity

In conclusion, the SMCJ170HE3/57T stands as a reliable and efficient TVS diode, offering robust transient voltage protection for a wide range of electronic applications.

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