EL8171IS-T7

Product Overview

• Category: Optocoupler
• Use: Isolation and signal transmission between two electrical circuits
• Characteristics: High isolation voltage, high current transfer ratio, compact package size, low power consumption
• Package: SOP-4
• Essence: Phototransistor output optocoupler
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Isolation Voltage: 5000 Vrms
• Current Transfer Ratio: 50% to 600%
• Collector-Emitter Voltage: 80 V
• Emitter-Collector Voltage: 6 V
• Collector Current: 50 mA
• Power Dissipation: 70 mW
• Operating Temperature Range: -55°C to +110°C

Detailed Pin Configuration

The EL8171IS-T7 optocoupler has a SOP-4 package with the following pin configuration:

1. Anode (A)
2. Cathode (K)
3. No Connection (NC)
4. Collector (C)

Functional Features

• Provides electrical isolation between input and output circuits
• Transfers signals from one circuit to another without direct electrical connection
• Amplifies weak input signals for better transmission
• Protects sensitive components from voltage spikes and noise

Advantages and Disadvantages

Advantages: - High isolation voltage ensures safe signal transmission - Compact package size saves board space - Low power consumption reduces energy usage - Wide operating temperature range allows for versatile applications

Disadvantages: - Limited collector-emitter voltage may not be suitable for high-voltage applications - Lower current transfer ratio compared to some alternative models

Working Principles

The EL8171IS-T7 optocoupler consists of an infrared LED and a phototransistor. When a current is applied to the LED, it emits infrared light. This light is then detected by the phototransistor, causing it to conduct electricity. The amount of current conducted depends on the intensity of the received light. This allows the optocoupler to transfer signals from the input circuit to the output circuit without direct electrical connection.

Detailed Application Field Plans

The EL8171IS-T7 optocoupler can be used in various applications, including:

1. Power supply circuits: Isolating control signals from high-voltage power circuits
2. Industrial automation: Transmitting signals between control systems and sensors/actuators
3. Medical equipment: Isolating sensitive electronic components from patient contact circuits
4. Telecommunications: Protecting communication devices from voltage spikes and noise

Detailed and Complete Alternative Models

• EL817C
• PC817
• TLP621
• SFH620A
• MOC3021

These alternative models offer similar functionality and can be used as substitutes for the EL8171IS-T7 optocoupler in various applications.

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