NL-5971
15.5mm 13-segment tube manufactured by National Electronics
The NL-5971 is a segment tube manufactured by National Electronics and also by Burroughs. It can display 13 individual segments, allowing to show alphanumeric characters. It has a very flat and slim glass envelope. Its similar to the B-7971 which is bigger and has 15 segments.
| Brand / Manfacturer | National Electronics |
| Same Types | |
| Likely Tyes | |
| Symbol height in mm | 15.5 |
| Characters / Symbols | 13 Segments |
| Decimal point | none |
| Base / Socket | SK169 |
| Starting Voltage (typ) | 170 V |
| Maintaining Voltage (typ) | 0 V |
| Current per Segment | 0.5 to 4mA |
| Reccomend Resistor | 15kOhm @ 170V = 2mA |
Note:
Note: This tube shows a shiny coating, because it was used for a very long time and has nearly reached the end of life.