EL8172FSZ-T7

Product Overview

Category

EL8172FSZ-T7 belongs to the category of optocouplers or optoisolators.

Use

Optocouplers are electronic components used to transfer electrical signals between two isolated circuits by using light. They provide electrical isolation and protect sensitive components from high voltages or noise.

Characteristics

• Optocouplers consist of an LED (light-emitting diode) and a phototransistor or photodiode.
• They have high voltage isolation capabilities, typically ranging from a few hundred volts to several kilovolts.
• Optocouplers can operate at high speeds, making them suitable for applications requiring fast response times.
• They offer low power consumption and are available in various package types.

Package

EL8172FSZ-T7 is packaged in a small outline package (SOP).

Essence

The essence of EL8172FSZ-T7 lies in its ability to provide electrical isolation and signal transmission through the use of light.

Packaging/Quantity

EL8172FSZ-T7 is typically sold in reels containing a specific quantity, such as 2,500 units per reel.

Specifications

• Input Current: 5 mA
• Forward Voltage: 1.2 V
• Collector-Emitter Voltage: 80 V
• Collector Current: 50 mA
• Isolation Voltage: 3,750 Vrms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

EL8172FSZ-T7 has a 4-pin configuration:

1. Anode (A): Connected to the positive terminal of the LED.
2. Cathode (K): Connected to the negative terminal of the LED.
3. Collector (C): Connected to the collector of the phototransistor.
4. Emitter (E): Connected to the emitter of the phototransistor.

Functional Features

• EL8172FSZ-T7 provides electrical isolation between input and output circuits.
• It allows signal transmission without direct electrical contact.
• The optocoupler can be used to control high voltage or noisy signals with low voltage control signals.
• It offers high-speed switching capabilities, making it suitable for applications requiring fast response times.

Advantages and Disadvantages

Advantages

• Provides electrical isolation, protecting sensitive components from high voltages or noise.
• Allows signal transmission without direct electrical contact.
• High-speed switching capabilities.

Disadvantages

• Limited current and voltage handling capabilities compared to other types of electronic components.
• Requires additional circuitry for proper operation.

Working Principles

EL8172FSZ-T7 operates based on the principle of optical coupling. When a current flows through the LED, it emits light. This light is then detected by the phototransistor or photodiode, which generates an electrical signal proportional to the intensity of the received light. The electrical signal can be used to control or monitor the connected circuit.

Detailed Application Field Plans

EL8172FSZ-T7 finds applications in various fields, including:

1. Power supply systems: Isolating control signals from high-voltage power circuits.
2. Industrial automation: Transmitting signals between different parts of a system while maintaining electrical isolation.
3. Medical equipment: Protecting sensitive components from electrical interference.
4. Telecommunications: Isolating signals in communication systems to prevent interference.

Detailed and Complete Alternative Models

Some alternative models to EL8172FSZ-T7 include:

1. PC817: A widely used optocoupler with similar specifications and package type.
2. TLP621: Optocoupler with higher collector-emitter voltage and current ratings.
3. HCPL-4506: Optocoupler with higher isolation voltage and faster switching speed.

These alternative models offer similar functionality but may have different specifications or package types, allowing users to choose the most suitable option for their specific application.

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