EL8171ISZ

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

• 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

Pin Configuration

The EL8171ISZ optocoupler has the following pin configuration:

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| | 1 | | 2 |____| | | 3 | | 4 |____| ```

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

Functional Features

• High-speed response time: Allows for fast signal transmission between isolated circuits.
• High gain: Provides amplification of weak input signals.
• Low power consumption: Energy-efficient operation.

Advantages and Disadvantages

Advantages: - Fast response time enables quick data transfer. - High gain amplifies weak signals effectively. - Low power consumption reduces energy usage.

Disadvantages: - Limited operating temperature range (-55°C to +110°C). - Maximum collector-emitter voltage is relatively low (80 V).

Working Principles

The EL8171ISZ 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 optocoupler provides electrical isolation between the input and output circuits while allowing signal transmission through light.

Detailed Application Field Plans

The EL8171ISZ optocoupler finds applications in various fields, including:

1. Industrial automation: Isolation and signal transmission in control systems.
2. Telecommunications: Signal isolation in communication equipment.
3. Medical devices: Isolation and protection of sensitive circuits.
4. Automotive electronics: Signal transmission and noise reduction in automotive systems.
5. Power supply systems: Isolation and feedback control in power converters.

Detailed Alternative Models

• EL817C
• PC817
• TLP521-1
• SFH620A-1
• PS2501-1

These alternative models offer similar functionality and can be used as substitutes for the EL8171ISZ optocoupler.

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