15.5mm numeric tube manufactured by RFT / WF

The Z5600M is a clear glass end view nixie tube manufactured by RFT/WF in Germany. It uses the very common socket B13B and is also available with red coating. This tube has a very special formed black cage around the digits, which gives allows the digits to illuminate the black background too. This gives the Z5600M a unique background glow, which you can see in an image below.
Brand / Manfacturer RFT / WF
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) 135 V
Current per Segment 1.75mA
Reccomend Resistor 20kOhm = 1.75mA