Description
The 4N35 Opto-isolator is a general-purpose 6 pin DIP phototransistor optocoupler ideal for isolating different sections of a circuit.
Each device contains a gallium arsenide infrared LED and a silicon NPN phototransistor, offering high electrical isolation between input and output perfect for digital logic, signal interfacing, and power system control.
A reliable choice for noise sensitive applications, microcontroller protection, industrial electronics, or switching between high and low voltage domains.
- Model: 4N35 Optocoupler
- Package: DIP 6 (Through-Hole)
- LED Forward Current (Max): 80 mA
- Reverse Input Voltage: 6 V
- Input Power Dissipation: 150 mW
- Phototransistor Collector Current: 100 mA
- Collector-Emitter Voltage (VCEO): 30 V
- Emitter-Collector Voltage (VECO): 7 V
- Collector-Base Voltage (VCBO): 70 V
- Collector Power Dissipation: 150 mW
- Total Power Dissipation: 250 mW
- Typical Response Time: 3 μs
- Minimum Current Transfer Ratio (CTR): 20% at 10 mA input
- Isolation Voltage: 2500 Vrms (AC for 1 min, RH 40–60%)
- Operating Temperature Range: –55°C to +100°C
What’s Included:
- 5 x 4N35 Opto-isolator ICs (DIP 6 Package)
Great For:
- Microcontroller Signal Isolation
- Power Supply Feedback Loops
- Industrial Electronics
- High Voltage Signal Interfacing
- DIY Hobby Electronics & Education
- Noise Immunity in Sensitive Circuits
Usage Tips:
- Ensure correct LED polarity on input side (anode/cathode)
- Use a suitable current-limiting resistor for LED input
- Collector output can be pulled up with resistor for digital logic levels
- Compatible with breadboard and through hole PCBs
