IV-16 is a tiny numitron tube. Each tube is able to display the following shapes: "0 1 2 3 4 5 6 7 8 9".

Symbol height: 10mm (0.400");

Overall dimensions: 11mm (0.433") dia. X 30mm (1.18");

Pin diameter: 0.5mm (0.020");

Filament voltage: 2.8-4.5V;

Filament current: 17-22mA;

Pinout: one common pin, others corresponds each segment.