7.8mm numeric tube manufactured by National Electronics
The JAN 7977 is a clear glass miniature nixie tube manufactured by National Electronics. Its the military version of the NL-7977/4032 and has a black heat-shrink around it to get better contrast.
|Symbol height (mm)||7.8|
|Starting Voltage (typ)||170 V|
|Maintaining Voltage (typ)||0 V|
|Current per Segment||1.4mA|
|Reccomend Resistor||15kOhm @ 170V, 91kOhm @ 250V, 150kOhm @300V according to datasheet|
Images of the digits will follow