ZM1020 (Z520M)
15.5mm numeric tube manufactured by Mulllard
The ZM1020 is a red coated numerical nixie tube manufactured by Mullard. Its equal to the ZM1020 by Philips and Siemens. It looks like Mullard sold these also as a replacement for the Z520M according to the tube box.
| Brand / Manfacturer | Mulllard |
| Same Types | |
| Likely Tyes | |
| Symbol height in mm | 15.5 |
| Characters / Symbols | 0.9 |
| Decimal point | none |
| Base / Socket | B13B |
| Starting Voltage (typ) | 170 V |
| Maintaining Voltage (typ) | 145 V |
| Current per Segment | 2mA |
| Reccomend Resistor | 12.5kOhm = 2mA |
