The NL5441A is a regular sized nixie tube. It is the smooth-topped version of the NL5441. It has become very popular as the tube to use in divergence meters: Its size is about right, it has a decimal point and a smooth top, like the tubes used in the anime Steins;Gate. This is one example.

Digit size 15.5mm
Min current 1.5mA
Max current 3.0mA
NL5441A datasheet

Compatible tubes: B5441A

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