|Three 7FB4561AB 4-digit 7-segment LED displays|
These are the displays used in the 2.5GHz 12-Digit High-Resolution Frequency Counter.
The digits are 14mm high and coloured blue. They are wired with common cathodes. Efficiency is high with a useful drive current range of about 0.1-5mA per segment.
They are sold in a set of three, as required for the High-Resolution Frequency Counter project.