EL8172ISZ

Product Overview

• Category: Optocoupler
• Use: Signal isolation and voltage level shifting
• Characteristics: High-speed, high-gain, low-power consumption
• Package: SOP-4
• Essence: Phototransistor output optocoupler
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Isolation Voltage: 5000 Vrms
• Collector-Emitter Voltage: 80 V
• Emitter-Collector Voltage: 7 V
• Collector Current: 50 mA
• Power Dissipation: 150 mW
• Operating Temperature Range: -55°C to +110°C

Detailed Pin Configuration

The EL8172ISZ optocoupler has a SOP-4 package with the following pin configuration:

1. Anode (A)
2. Cathode (K)
3. Collector (C)
4. Emitter (E)

Functional Features

• High-speed response time: Allows for fast signal transmission.
• High gain: Provides amplification of weak input signals.
• Low power consumption: Energy-efficient operation.
• Phototransistor output: Enables current flow based on light intensity.

Advantages and Disadvantages

Advantages: - Fast response time enhances signal transmission speed. - High gain amplifies weak input signals effectively. - Low power consumption reduces energy usage. - Phototransistor output allows for current control based on light intensity.

Disadvantages: - Limited collector-emitter voltage may restrict certain applications. - Maximum collector current may not be sufficient for high-power circuits.

Working Principles

The EL8172ISZ optocoupler consists of an infrared LED and a phototransistor. When a forward current is applied to the LED, it emits infrared light. This light is then detected by the phototransistor, causing it to conduct current. The output current of the phototransistor is proportional to the intensity of the received light. This optocoupler provides electrical isolation between the input and output circuits, allowing for signal transmission without direct electrical connection.

Detailed Application Field Plans

The EL8172ISZ optocoupler finds applications in various fields, including:

1. Industrial automation: Signal isolation in control systems.
2. Telecommunications: Voltage level shifting in communication interfaces.
3. Power electronics: Isolation and protection in high-voltage circuits.
4. Medical equipment: Galvanic isolation for patient safety.
5. Automotive electronics: Signal conditioning and isolation in automotive systems.

Detailed and Complete Alternative Models

1. PC817: Photocoupler with similar characteristics and package.
2. TLP621: Optocoupler with higher collector-emitter voltage rating.
3. SFH617A-2: High-speed optocoupler with lower power consumption.

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