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4N25 Optocoupler

The 4N25 is a 6-pin phototransistor optocoupler used for signal isolation between low-voltage and high-voltage circuits. It features a GaAs infrared LED and a phototransistor output, making it ideal for microcontroller interfacing and power supply feedback.

4N25 Optocoupler
₹45.57Buy Now

Specifications

Input Type: DC Forward Current (If): 60 mA Forward Voltage (Vf): 1.5 V Maximum Collector Emitter Voltage (Vceo): 70 V Maximum Collector Current (Ic): 50 mA Isolation Voltage: 2500 Vrms Package Type: DIP-8 Number of Pins: 6 (excluding NC pins) Operating Temperature: -55°C to +100°C Power Dissipation: 100 mW Rise Time: 2.5 µs Fall Time: 2.5 µs

Details

The 4N25 Optocoupler is a general-purpose phototransistor optocoupler designed to provide electrical isolation between input and output circuits. It consists of a Gallium Arsenide (GaAs) infrared emitting diode optically coupled to a silicon phototransistor. This component is essential for protecting sensitive microcontrollers and logic circuits from high-voltage transients and noise in industrial environments. Key features include a high isolation voltage of 2500Vrms, a wide operating temperature range, and compatibility with TTL and CMOS logic levels. Common applications include switching power supplies, motor control, line receivers, and isolated data communication. Choosing the 4N25 ensures reliable signal transmission, noise immunity, and safety in your electronic designs. It is available in a standard DIP-8 package for easy prototyping and PCB mounting.

Tags

optocouplerphototransistorisolation4N25DIP-8signal isolationmicrocontrollerVishay

Alternatives

  • 4N26
  • 4N27
  • 4N28
  • TLP521-4
📄 View Datasheet