The recommended operating temperature range for the 4N35 is -40°C to 100°C.
To ensure reliability in high-temperature applications, it's recommended to derate the device's current and voltage ratings according to the temperature derating curve provided in the datasheet.
The maximum allowable voltage for the 4N35 is 70V, but it's recommended to operate the device at a voltage below 60V to ensure reliable operation.
The correct resistor value for the input LED depends on the input voltage and the desired current. A general rule of thumb is to choose a resistor value that limits the current to 10-20mA.
The typical response time of the 4N35 is around 10-20μs, but this can vary depending on the specific application and operating conditions.
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