10pcs IV-21 7-SEGMENT 8-DIGITS Indicator VFD TUBES NOS, Vintage Nixie Clock

Description

Lot of 10 pcs IV-21 VFD tubes
New, old stock.
Vacuum Fluorescent Display (VFD).
IV-21 is intended for formation of digits (0 ... 9)  and points for each digit.
Total 8 digits, each consisting of 7 segments and a dot.
Has a service category to display more information.
Used in the equipment of broad application.
Color of a luminescence - green.
Housing - glass.
Weight is no more than 13 g.
Key technical parameters of the glow discharge indicator IV-21:
luminescence brightness for one digit number, not less than - 300 cd/m2 (≤300 cd/m2);
the service category - 175 cd/m2;
filament voltage: 2.4 V (min=2.0 V, max=2.65 V);
filament current: 35 mA (min=30 mA, max=40 mA);
total current anodes-segments pulse: 12 mA (min=4 mA, max=20 mA);
voltage anodes-segments: not more than 50 V (≤50 V);
current anode-segment pulse: no more than 1 mA (≤1 mA);
voltage grid pulse: 27 V (max=50 V);
grid current for one digit pulse: 2 uA (min=1 uA, max=3 uA);
Ambient temperature: -45...+70 °С.