PS9551AL4-V-AX

Basic Information Overview

• Category: Optocoupler
• Use: Isolation of electrical signals between two circuits
• Characteristics: High-speed, high-gain, low power consumption
• Package: SOP-4L
• Essence: Photocoupler with a GaAs infrared emitting diode and a phototransistor
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Isolation Voltage: 3750 Vrms
• Collector-Emitter Voltage: 80 V
• Emitter-Collector Voltage: 6 V
• Collector Current: 50 mA
• Power Dissipation: 150 mW
• Operating Temperature Range: -40°C to +100°C

Detailed Pin Configuration

The PS9551AL4-V-AX optocoupler has the following pin configuration:

1. Anode (A)
2. Cathode (K)
3. Collector (C)
4. Emitter (E)

Functional Features

• Provides electrical isolation between input and output circuits
• Transfers signals using light instead of direct electrical connection
• High-speed response for quick signal transmission
• Low power consumption for energy efficiency
• Compact package size for space-saving designs

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data transfer
• High gain ensures accurate signal reproduction
• Low power consumption reduces energy costs
• Small package size enables compact circuit designs
• Excellent noise immunity due to optical isolation

Disadvantages

• Limited operating temperature range (-40°C to +100°C)
• Requires external current-limiting resistor for proper operation
• Sensitive to ambient light interference

Working Principles

The PS9551AL4-V-AX optocoupler consists of an infrared emitting diode and a phototransistor. When a voltage is applied to the input side (Anode and Cathode), the infrared diode emits light. This light is then detected by the phototransistor on the output side (Collector and Emitter). The phototransistor amplifies the received light signal, providing electrical isolation between the input and output circuits.

Detailed Application Field Plans

The PS9551AL4-V-AX optocoupler finds applications in various fields, including:

1. Industrial automation: Isolation of control signals in PLCs, motor drives, and power supplies.
2. Telecommunications: Signal isolation in communication equipment, such as routers and switches.
3. Medical devices: Protection against electrical noise in patient monitoring systems and medical equipment.
4. Automotive electronics: Isolation of signals in automotive control modules and battery management systems.
5. Power electronics: Isolation of high-voltage signals in inverters, converters, and power supplies.

Detailed and Complete Alternative Models

1. PS9501L1-AX: Similar optocoupler with higher collector-emitter voltage rating (100 V).
2. PS9307X-AX: Optocoupler with lower power dissipation (100 mW) and wider operating temperature range (-40°C to +110°C).
3. PS9701-AX: Optocoupler with higher collector current rating (100 mA) for applications requiring higher current transfer capability.

(Note: These alternative models are provided for reference and may have different pin configurations or specifications. Please refer to their respective datasheets for detailed information.)

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