Description

The PC817 optocoupler (photocoupler) is an essential IC used to provide electrical isolation between two circuits using light transmission. It contains an infrared (IR) LED and a phototransistor, allowing signals to pass through safely without direct electrical connection.

When the internal IR LED is powered, it emits light that activates the phototransistor, enabling signal transfer while protecting sensitive components from noise, voltage spikes, and interference.

This makes the PC817 ideal for Arduino projects, power supplies, microcontroller circuits, and industrial control systems.

Key Features:

• 🔌 Electrical Isolation between input and output circuits

• 💡 IR LED + Phototransistor for reliable signal transfer

• ⚡ Noise Protection for sensitive electronics

• 🛠 Compact & Easy to Use in PCB designs

• 🤖 Perfect for Arduino & DIY projects

Specifications:

• Model: PC817

• Type: Optocoupler / Photocoupler

• Input Diode Forward Voltage: 1.25V

• Collector-Emitter Voltage: 80V (Max)

• Collector Current: 50mA (Max)

• Cut-off Frequency: 80 kHz

• Rise Time: 18µs

• Fall Time: 18µs

Applications / Where to Use:

• 🔌 Power supply isolation circuits

• 🤖 Arduino & microcontroller interfacing

• ⚡ Switching power supplies (SMPS)

• 🛠 Signal isolation in noisy environments

• 🏭 Industrial control systems