The 4N35 IC Optocoupler Phototransistor IC is a single-channel optical isolator designed to transfer electrical signals between two isolated circuits using light. Minimum 100% (at I_F = 10mA).
The 4N35 IC Optocoupler Phototransistor IC is a single-channel optical isolator designed to transfer electrical signals between two isolated circuits using light. It houses a GaAs infrared light-emitting diode (LED) optically coupled to a silicon NPN phototransistor in a standard 6-pin Dual In-line Package (DIP-6).
By isolating the control logic circuit (such as a 3.3V or 5V microcontroller) from high-voltage DC or AC power loads, the 4N35 effectively blocks ground loops, voltage spikes, and electrical noise from damaging sensitive control hardware. It provides a high isolation test voltage of up to 5000V RMS and features a base terminal connection on pin 6 for external bias control and fine-tuning response times.
It is compatible with Arduino, ESP32, Raspberry Pi, relay driving circuits, AC mains monitoring, switching power supplies (SMPS), motor controllers, and general embedded DIY electronic systems.
| Type | Single-Channel Phototransistor Optocoupler / Optoisolator |
|---|---|
| Model | 4N35 |
| Package Type | 6-Pin DIP (Through-Hole) |
| Current Transfer Ratio (CTR) | Minimum 100% (at I_F = 10mA) |
Is it compatible with Arduino and ESP32?
Yes. It works with Arduino, ESP32, Raspberry Pi, STM32 projects.
Can I buy the 4N35 IC – Optocoupler Phototransistor IC in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
