>>FND501 common cathode overflow
>>FND507 common anode seven segment
>>FND508 common anode overflow
>>
>>I've figured the pinout using 5V (reverse voltage limit for an FND32XC)
>>and a conservative resistor to keep the current low. Does anyone have a
>>datasheet for these with the actual current limit so that I might safely
>>get a little more brightness?
>
>I used tons of the FND507s back ages ago. We ran them at 8mA/segment,
>and they were fairly bright with a decent optical filter.

As these are very old devices I suspect that the maximum current is 20mA
average per segment, which was a common figure with early LEds. Running them
at any current below that, which gives suitable brightness should be Ok.

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