4N35 Vis=3500V Vceo=30V Optron

The 4N35 is a general-purpose optocoupler, expertly designed for electrical isolation between circuits while ensuring reliable signal transmission. It offers a robust solution for a wide array of applications.

Overview

The 4N35 optocoupler provides essential electrical isolation between its input (LED side) and output (photodetector side).

This isolation effectively protects sensitive components from high voltages and electrical noise, safeguarding them from potential damage due to electrical surges or interference.

The 4N35 also facilitates the transfer of both DC and AC signals, ensuring versatile usage across a wide range of electronic applications.

Key Features

- Features a gallium arsenide infrared LED and a silicon NPN phototransistor for optimal performance.

- High current transfer ratio (CTR): minimum 100% at IF = 10mA, VCE = 10V

- Input-output isolation voltage (Viso): 3550 Vrms

- Response time (tr): typical, 3 μs at VCE = 10V, IC = 2 mA, RL = 100Ω

- Dual inline package

- High Sensitivity to Low Input Drive Current

- Meets or Exceeds All JEDEC Registered Specifications

- Industry Standard Dual-in-Line 6-Pin Package

Applications

- I/O interfaces for computers

- System appliances, measuring instruments

- Signal transmission between circuits of different potentials and impedances

- Power Supply Regulators

- Digital Logic Inputs

- Microprocessor Inputs

- AC mains detection

- Reed relay driving

- Switch mode power supply feedback

- Telephone ring detection

- Logic ground isolation

- Logic coupling with high frequency noise rejection

- Remote Terminal Isolation

- SCR and Triac Triggers

- Mechanical Relays and Pulse Transformers

- Signal isolation in communication systems

- Switching power supplies

- Microcontroller interface isolation

- Motor control circuits

- Industrial automation systems

- Data acquisition systems

- AV conversion audio circuits

Safety and Regulatory Approvals

- UL1577, 5,000 VACRMS for 1 Minute

- DIN−EN/IEC60747−5−5, 850 V Peak Working Insulation Voltage (Pending)

- UL Recognized with 3550 Vrms for 1 minute per UL1577 and is approved under CSA Component Acceptance Notice #5, File CA 88324

Pinout Configuration

The 4N35 optocoupler comes in a conveniently small dual inline package with six pins in total.

This structured layout is designed to ensure peak device efficacy and adaptability across a diversity of circuit applications.

Connections and Configuration

- Connect the anode of the infrared LED (pin 1) to the logic input.

- Connect the cathode (pin 2) to the ground.

- Pull up the collector pin (pin 5) using a resistor and link it to the output device, where, in our scenario, an output probe is used to observe the results.