ROV20H391K

Product Overview

Category

The ROV20H391K belongs to the category of electronic components, specifically a varistor.

Use

It is used as a voltage-dependent resistor to protect circuits from excessive transient voltage surges.

Characteristics

• Voltage-dependent nonlinear resistor
• High energy absorption capability
• Fast response time
• Wide operating temperature range

Package

The ROV20H391K is typically available in a disc-shaped package with leads for easy integration into circuit boards.

Essence

The essence of the ROV20H391K lies in its ability to limit transient voltage spikes and protect sensitive electronic components.

Packaging/Quantity

It is commonly packaged in reels or trays, with quantities varying based on manufacturer specifications.

Specifications

• Maximum Allowable Voltage: 390V
• Energy (2ms): 20J
• Peak Current (8/20μs): 3000A
• Operating Temperature Range: -40°C to +85°C
• Varistor Voltage @1mA DC: 455V

Detailed Pin Configuration

The ROV20H391K typically has two leads for connection to a circuit board. The pin configuration is as follows: - Pin 1: Connection point for one end of the varistor - Pin 2: Connection point for the other end of the varistor

Functional Features

• Transient voltage suppression
• Absorption of high-energy transients
• Protection of sensitive electronic components

Advantages

• Effective protection against voltage surges
• Fast response time
• Wide operating temperature range

Disadvantages

• Limited lifespan under repeated high-energy transient events
• Non-linear response to voltage changes

Working Principles

The ROV20H391K operates based on the principle of voltage-dependent resistance. When exposed to a transient voltage surge, the varistor's resistance decreases, diverting excess current away from the protected circuit.

Detailed Application Field Plans

The ROV20H391K is commonly used in various electronic devices and systems, including: - Power supplies - Telecommunications equipment - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the ROV20H391K include: - VDRS20H391K - MOV20H391K - SVR20H391K

In conclusion, the ROV20H391K serves as a crucial component in protecting electronic circuits from voltage surges, offering effective transient voltage suppression and high energy absorption capabilities. While it has advantages such as fast response time and wide operating temperature range, it also has limitations related to its lifespan and non-linear response. Understanding its working principles and application field plans can aid in utilizing it effectively within various electronic systems.

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