4N25 Optocoupler DIP-6 – Phototransistor Output Opto-Isolator IC

Original price was: ₹35.00.Current price is: ₹30.00.

SKU: 5217 Category: Tags: , , , , ,
Brand:Generic

Description

4N25 Optocoupler DIP-6 – Phototransistor Output Opto-Isolator IC

The 4N25 optocoupler is a widely used opto-isolator IC that provides reliable electrical isolation between input and output circuits using an infrared LED and a silicon phototransistor. It is ideal for protecting sensitive low-voltage logic circuits from high-voltage noise, transients, and ground loops. Supplied in a standard DIP-6 through-hole package, the 4N25 is easy to integrate into industrial control boards, power supply feedback circuits, and microcontroller interfacing applications.

Specification Details
Part Number 4N25
Device Type Optocoupler / Opto-Isolator
Output Type Phototransistor
Isolation Voltage Up to 5000Vrms (Typical)
CTR (Current Transfer Ratio) 20% – 50% (Typical)
Collector-Emitter Voltage 30V
Input Forward Current 10–20mA Typical
Package Type DIP-6 Through-Hole

Applications

  • Microcontroller input isolation
  • SMPS feedback and control circuits
  • PLC and industrial signal isolation
  • Noise-free digital signal interfacing
  • Relay driver and logic protection circuits

How to Use

  1. Connect a current-limiting resistor in series with the input LED.
  2. Apply logic signal to the LED side from MCU or control circuit.
  3. Use pull-up resistor on phototransistor output for proper switching.
  4. Maintain isolation gap on PCB layout for safety.
  5. Avoid exceeding LED forward current for long-term reliability.
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4N25 optocoupler IC with phototransistor output in DIP-6 package for safe signal isolation in industrial and microcontroller applications.