The recommended PCB layout for the 4N35-060E involves keeping the input and output circuits separate to minimize electromagnetic interference (EMI). The LED and photodiode should be placed close together, and the PCB traces should be kept short and wide to reduce noise and signal loss.
The correct resistor value for the input LED depends on the input voltage and current required. A general rule of thumb is to choose a resistor that limits the input current to 10-20 mA. You can use the formula R = (Vin - Vf) / If, where R is the resistor value, Vin is the input voltage, Vf is the LED forward voltage, and If is the desired input current.
The 4N35-060E has an operating temperature range of -40°C to 100°C. However, the device's performance may degrade at extreme temperatures, and the maximum junction temperature should not exceed 125°C.
The 4N35-060E has a limited bandwidth of around 10 kHz, making it suitable for low-frequency applications such as power supply isolation and signal isolation. For high-frequency applications, a faster optocoupler with a higher bandwidth should be used.
To ensure the reliability of the 4N35-060E in high-reliability applications, follow proper handling and storage procedures, use a clean and dry environment, and avoid exposing the device to mechanical stress or electrical overstress. Additionally, consider using a redundant or duplicated design to minimize the risk of failure.
4N35-060E datasheet
by Avago Technologies
