EL8171IS

Product Overview

Category: Optocoupler
Use: Isolation and signal transmission between two electrical circuits
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

• Input Current: 5 mA
• Collector-Emitter Voltage: 80 V
• Collector Current: 50 mA
• Power Dissipation: 100 mW
• Rise Time: 18 µs
• Fall Time: 15 µs
• Operating Temperature Range: -55°C to +110°C

Detailed Pin Configuration

The EL8171IS optocoupler has a total of four pins:

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

Functional Features

• High-speed response time for efficient signal transmission
• Phototransistor output provides high gain and sensitivity
• Low power consumption for energy efficiency
• Wide operating temperature range for versatile applications
• Compact SOP-4 package for space-saving designs

Advantages and Disadvantages

Advantages: - High-speed performance enables fast data transfer - Phototransistor output offers improved linearity and accuracy - Low power consumption reduces energy costs - Wide operating temperature range allows for use in various environments - Compact package saves board space

Disadvantages: - Limited maximum collector-emitter voltage may restrict certain applications - Sensitivity to external light sources may affect performance in bright environments

Working Principles

The EL8171IS optocoupler utilizes an infrared LED as the input and a phototransistor as the output. When an electrical signal is applied to the LED, it emits infrared light that is then detected by the phototransistor. The phototransistor amplifies the received signal and provides electrical isolation between the input and output circuits. This allows for safe and reliable signal transmission while protecting sensitive components from voltage spikes or noise.

Detailed Application Field Plans

The EL8171IS optocoupler finds applications in various fields, including:

1. Industrial Automation: Isolation of control signals in PLCs, motor drives, and power supplies.
2. Telecommunications: Signal transmission and isolation in telecommunication equipment.
3. Medical Devices: Isolation of sensitive circuits in medical equipment for patient safety.
4. Automotive Electronics: Isolation and protection of automotive control systems.
5. Consumer Electronics: Isolation of audio, video, and data signals in home appliances and entertainment devices.

Detailed and Complete Alternative Models

1. EL817C: Phototransistor output, DIP-4 package
2. PC817: Phototransistor output, SOP-4 package
3. TLP621: Photocoupler, DIP-4 package
4. SFH620A: Phototransistor output, SOP-4 package
5. PS2501-1: Phototransistor output, DIP-4 package

(Note: This list is not exhaustive and there are other alternative models available in the market.)

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