ON Semiconductor 4N27S Optoisolator

The ON Semiconductor 4N27S is a versatile optoisolator device designed to provide electrical isolation between an input signal and an output stage, while allowing signal transfer through light emission and detection. This component is essential for applications where signal integrity and isolation are critical for performance and safety.

Key Features

• High Voltage Isolation: The 4N27S offers a high dielectric isolation voltage of 5000 Vrms, making it suitable for high-voltage applications where electrical separation between circuits is necessary to prevent noise and interference.
• Phototransistor Output: It includes a phototransistor which provides a reliable and efficient output, triggered by the LED input. This feature ensures a consistent response to the input signal.
• Wide Operating Temperature Range: The device can operate over a temperature range of -55°C to +100°C, enabling it to function in a variety of harsh environments without performance degradation.
• Industry Standard DIP Package: Housed in a Dual In-line Package (DIP), the 4N27S is easy to integrate into existing designs and is compatible with standard PCB layouts.
• Lead-Free and RoHS Compliant: In keeping with environmental standards, the 4N27S is lead-free and RoHS compliant, minimizing the environmental impact and meeting global regulatory requirements.

Applications

The ON Semiconductor 4N27S is ideal for a range of applications that require reliable isolation, including:

• Industrial controls
• Signal switching
• Power supply regulation
• Motor control systems
• Computer peripheral interfacing

Technical Specifications

Some of the technical specifications of the 4N27S include:

• Current Transfer Ratio (CTR): 20% to 300%
• Input-Output Isolation Voltage: 5000 Vrms
• Collector-Emitter Voltage: 30 V
• Emitter-Collector Voltage: 7 V
• Forward Current: 60 mA
• Power Dissipation: 100 mW

The 4N27S optoisolator from ON Semiconductor is a reliable choice for designers looking to maintain signal fidelity and protect against high voltage transients in their electronic designs.