PS8551L4-E3-AX

Product Overview

Category

The PS8551L4-E3-AX belongs to the category of optocouplers or optoisolators.

Use

Optocouplers are electronic components used to transfer electrical signals between two isolated circuits. They provide electrical isolation and protect sensitive components from voltage spikes, noise, and other disturbances.

Characteristics

• Optocouplers consist of an LED (light-emitting diode) and a phototransistor or photodiode.
• They can transmit signals across a wide range of frequencies.
• Optocouplers offer high isolation voltage and low power consumption.
• They are compact in size and have a long operational life.

Package

The PS8551L4-E3-AX is available in a small outline package (SOP).

Essence

The essence of the PS8551L4-E3-AX is to provide galvanic isolation between input and output circuits, ensuring signal integrity and protection against voltage fluctuations.

Packaging/Quantity

The PS8551L4-E3-AX is typically packaged in reels containing a specified quantity of units, such as 2,500 pieces per reel.

Specifications

• Isolation Voltage: 5,000 Vrms
• Collector-Emitter Voltage: 80 V
• Current Transfer Ratio: 50% to 600%
• Rise Time: 18 μs
• Fall Time: 10 μs
• Operating Temperature Range: -40°C to +100°C

Detailed Pin Configuration

The PS8551L4-E3-AX optocoupler has a 4-pin configuration:

1. Anode (A1): Connected to the anode of the internal LED.
2. Cathode (C1): Connected to the cathode of the internal LED.
3. Emitter (E1): Connected to the emitter of the internal phototransistor.
4. Collector (C2): Connected to the collector of the internal phototransistor.

Functional Features

• High-speed response and switching capability.
• Low input current requirement.
• High isolation voltage for enhanced safety.
• Compact size for space-constrained applications.
• RoHS compliant, ensuring environmental friendliness.

Advantages and Disadvantages

Advantages

• Provides electrical isolation between circuits.
• Protects sensitive components from voltage spikes and noise.
• Enables signal transmission across isolated circuits.
• Offers high-speed response and switching capability.
• Compact size allows for versatile integration.

Disadvantages

• Limited operating temperature range (-40°C to +100°C).
• Requires careful consideration of input current requirements.
• May introduce slight signal distortion due to inherent characteristics.

Working Principles

The PS8551L4-E3-AX optocoupler operates based on the principle of light-emitting diode (LED) and phototransistor coupling. When an electrical signal is applied to the input side, the LED emits light, which is then detected by the phototransistor on the output side. This optical coupling ensures electrical isolation while allowing signal transfer.

Detailed Application Field Plans

The PS8551L4-E3-AX optocoupler finds applications in various fields, including:

1. Industrial Automation: Isolation of control signals in motor drives, power supplies, and PLCs.
2. Telecommunications: Signal isolation in telecom equipment, such as modems and routers.
3. Medical Devices: Protection of sensitive electronic components in medical equipment.
4. Automotive Electronics: Isolation of signals in automotive systems, including hybrid and electric vehicles.
5. Power Electronics: Galvanic isolation in inverters, converters, and power supplies.

Detailed and Complete Alternative Models

1. PS8551L1-E3-AX
2. PS8551L2-E3-AX
3. PS8551L3-E3-AX
4. PS8551L5-E3-AX

These alternative models offer similar functionality and characteristics to the PS8551L4-E3-AX optocoupler, providing options for different design requirements.

In conclusion, the PS8551L4-E3-AX optocoupler is a versatile component that provides electrical isolation and signal transfer between isolated circuits. Its compact size, high-speed response, and wide range of applications make it an essential choice in various industries.