PS8551AL4-E3-AX

Product Overview

Category

The PS8551AL4-E3-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 while providing electrical isolation. They are commonly used in applications where there is a need to protect sensitive components from high voltages or to provide galvanic isolation.

Characteristics

• Optocouplers consist of an LED (light-emitting diode) and a phototransistor or photodiode.
• They provide electrical isolation by using light to transmit signals across the isolation barrier.
• Optocouplers can be used for both analog and digital signal transmission.
• They offer high noise immunity and can operate in harsh environments.
• They have fast response times and low power consumption.

Package

The PS8551AL4-E3-AX optocoupler is available in a small outline package (SOP) with four pins.

Essence

The essence of the PS8551AL4-E3-AX optocoupler lies in its ability to provide electrical isolation and signal transmission between two circuits.

Packaging/Quantity

The PS8551AL4-E3-AX optocoupler is typically packaged in reels or tubes and is available in quantities suitable for industrial production.

Specifications

• Isolation Voltage: 3750 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 PS8551AL4-E3-AX optocoupler has the following pin configuration:

1. Anode (A1)
2. Cathode (A2)
3. Collector (C)
4. Emitter (E)

Functional Features

• The PS8551AL4-E3-AX optocoupler provides high-speed signal transmission with low power consumption.
• It offers excellent noise immunity, making it suitable for applications in noisy environments.
• The optocoupler has a wide operating temperature range, allowing it to be used in various industrial settings.
• It provides electrical isolation, protecting sensitive components from voltage spikes and surges.

Advantages and Disadvantages

Advantages

• Provides electrical isolation between circuits.
• Fast response time.
• Low power consumption.
• Wide operating temperature range.
• High noise immunity.

Disadvantages

• Limited maximum collector-emitter voltage.
• Requires careful handling due to the sensitivity of the LED and phototransistor.

Working Principles

The PS8551AL4-E3-AX optocoupler works based on the principle of optical coupling. When an electrical signal is applied to the input side (LED), it emits light. This light is then detected by the phototransistor or photodiode on the output side, generating a corresponding electrical signal. The electrical signals on both sides are isolated from each other, providing protection against voltage fluctuations and noise.

Detailed Application Field Plans

The PS8551AL4-E3-AX optocoupler finds applications in various fields, including:

1. Industrial automation: Used for signal isolation and transmission in control systems, motor drives, and power electronics.
2. Telecommunications: Used for galvanic isolation in communication equipment, such as modems and routers.
3. Medical devices: Ensures electrical safety and isolation in medical equipment, such as patient monitoring systems and diagnostic devices.
4. Automotive electronics: Provides isolation and protection in automotive applications, including electric vehicles, hybrid vehicles, and engine control systems.

Detailed and Complete Alternative Models

1. PS8551L4-E3-AX
2. PS8551AL4-AX
3. PS8551BL4-E3-AX
4. PS8551CL4-E3-AX

These alternative models offer similar functionality and characteristics to the PS8551AL4-E3-AX optocoupler, providing options for different design requirements.

In conclusion, the PS8551AL4-E3-AX optocoupler is a versatile component that provides electrical isolation and signal transmission in various applications. With its fast response time, low power consumption, and high noise immunity, it offers reliable performance in demanding environments.