4N25 Optocoupler IC – DIP Package

The 4N25 is a widely used optocoupler (optoisolator) that consists of a gallium arsenide infrared LED and a silicon NPN phototransistor. It is designed to provide electrical isolation between input and output signals, making it ideal for noise-sensitive and high-voltage applications.

? Key Features

• ? Input Type: Infrared LED
• ? Output Type: Phototransistor
• ⚡ Isolation Voltage: 5000 Vrms
• ? Input Forward Current: 10mA (typical)
• ? CTR (Current Transfer Ratio): 20% to 300%
• ? Package: 6-pin DIP

? Applications

• Switching power supplies
• Signal isolation
• Microcontroller interfacing
• Data communication
• Motor control circuits

? Package Includes

• 1 × 4N25 Optocoupler IC – 6-pin DIP

The 4N25 is ideal for isolating low-voltage control systems from high-voltage environments, ensuring safety and signal integrity.