IN-1 (No Base, Fine Grid)
18mm numeric tube manufactured by Reflector/Sovtek
This tube looks like a IN-1 without the big brown base and a fine anode grid. This tube was either made for soldering into a board, but its more likely that this is a part of an IN-1. Maybe this part of the tube was manufactured and then assembled into a IN-1 by adding the base. It has no markings or anything else on the glass, but because of its shape it clearly can be identified as "IN-1". There is also a version with a normal grid.
Brand / Manfacturer | Reflector/Sovtek |
Same Types | |
Likely Tyes | |
Symbol height in mm | 18 |
Characters / Symbols | 0-9 |
Decimal point | none |
Base / Socket | 0 |
Starting Voltage (typ) | 170 V |
Maintaining Voltage (typ) | 135 V |
Current per Segment | 3mA |
Reccomend Resistor | 12.6kOhm = 2.8mA |