PS8551L4-V-AX

Product Overview

Category

The PS8551L4-V-AX belongs to the category of optocouplers, also known as optoisolators or photocouplers.

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

The PS8551L4-V-AX is a high-speed optocoupler designed for applications requiring high data rates and reliable signal transmission. It offers excellent performance in terms of speed, accuracy, and noise immunity.

Package

The PS8551L4-V-AX comes in a compact surface-mount package, making it suitable for space-constrained applications. The package is designed to ensure efficient heat dissipation and reliable operation.

Essence

The essence of the PS8551L4-V-AX lies in its ability to provide galvanic isolation between input and output circuits while maintaining signal integrity and minimizing distortion.

Packaging/Quantity

The PS8551L4-V-AX is typically available in tape and reel packaging, with a quantity of 2500 units per reel. This packaging format ensures ease of handling and compatibility with automated assembly processes.

Specifications

• Isolation Voltage: 5000 Vrms
• Data Rate: Up to 10 Mbps
• Supply Voltage: 3.3 V
• Operating Temperature Range: -40°C to +85°C
• Input Current: 5 mA (max)
• Output Voltage: 3.3 V (max)

Detailed Pin Configuration

The PS8551L4-V-AX has a 4-pin configuration:

1. Pin 1: Anode (Input)
2. Pin 2: Cathode (Input)
3. Pin 3: Collector (Output)
4. Pin 4: Emitter (Output)

Functional Features

• High-speed data transmission
• Low power consumption
• Wide operating temperature range
• High isolation voltage
• Compact and surface-mount package

Advantages and Disadvantages

Advantages

• Provides electrical isolation between circuits
• Enables reliable signal transmission
• Protects sensitive components from high voltages or noise
• Suitable for high-speed applications
• Compact and space-saving design

Disadvantages

• Limited voltage and current handling capabilities compared to other isolation techniques
• Sensitive to ambient light interference

Working Principles

The PS8551L4-V-AX utilizes an LED (Light Emitting Diode) as the input and a phototransistor as the output. When an electrical signal is applied to the input LED, it emits light that is detected by the phototransistor, causing it to conduct and generate an output signal. The optical coupling between the input and output ensures electrical isolation while allowing signal transfer.

Detailed Application Field Plans

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

1. Industrial automation: Isolation of control signals in PLCs (Programmable Logic Controllers), motor drives, and power inverters.
2. Telecommunications: Signal isolation in high-speed data communication systems, such as Ethernet and USB interfaces.
3. Medical equipment: Protection of sensitive electronic components in medical devices, ensuring patient safety.
4. Automotive electronics: Isolation of signals in automotive control systems, improving reliability and reducing noise interference.

Detailed and Complete Alternative Models

1. PS8551L1-AX: Similar specifications but with a lower data rate of 1 Mbps.
2. PS8551L2-AX: Higher data rate of 25 Mbps, suitable for ultra-high-speed applications.
3. PS8551L3-AX: Enhanced noise immunity and higher isolation voltage of 10 kV.

These alternative models offer different performance characteristics to suit specific application requirements.

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