The recommended operating temperature range for the 4N35-000E is -40°C to 100°C.
To ensure reliable operation in high-temperature environments, it is recommended to derate the device's current and voltage ratings according to the datasheet's thermal derating curves.
The maximum allowable voltage for the 4N35-000E's input LED is 5V, although it is recommended to operate at a maximum of 3.5V to ensure reliable operation.
The correct resistor value for the input LED can be calculated using the formula R = (Vcc - Vf) / If, where Vcc is the supply voltage, Vf is the forward voltage drop of the LED, and If is the desired forward current.
The typical propagation delay time for the 4N35-000E is around 10-20 μs, although this can vary depending on the specific application and operating conditions.
