Numeral height
13 mm
Numeral height 13 mm
Cathode current
2 mA
Cathode current Ik 2 mA
Anode voltage
170 V
Anode voltage Va >170 V
Ignition delay time
4
Ignition delay time See page 4 l)
Cathode current 1)
3.5 mA
Cathode current 1) Ix < 3.5 mA
Cathode current for coverage
1.5 mA
Cathode current for coverage Ik > 1.5 mA
Maintaining voltage at I = 2 mA (See also page 3)
140 mA
Maintaining voltage at I = 2 mA (See also page 3) Vi 140 Vv
Probe current to individual non-conducting cathodes
6
Probe current to individual non-conducting cathodes Igy See page 6
Cathode current, peak
12 mA
Cathode current, peak Ikp < 12 mA
Average cathode current for satisfactorily display
0.8 mA
Average cathode current for satisfactorily display Ix > 0.8 mA
Pulse duration
100 us
Pulse duration Timp > 100 us
Maintaining voltage
5
Maintaining voltage Vm See page 5
Probe current to individual non-conducting cathodes
6
Probe current to individual non-conducting cathodes I See pages 6
Anode voltage to ensure extinction
115 V
Anode voltage to ensure extinction Vg <115 V
1y For reduced ignition delay times, a small continuous priming current may be
1 a
1y For reduced ignition delay times, a small continuous priming current may be
respect to the "on" cathode via a resistor of 18 MQ.
18 a
respect to the "on" cathode via a resistor of 18 MQ.
Anode voltage necessary for ignition
170
Anode voltage necessary for ignition Va min. 170 vV
1y The life expectancy figures given above relate to operation with d.c. cathode
1
1y The life expectancy figures given above relate to operation with d.c. cathode
currents between 1.5 mA to 2.5 mA and at all permitted pulsed cathode cur-
2.5 mA
currents between 1.5 mA to 2.5 mA and at all permitted pulsed cathode cur-
When a d.c. cathode current range of 1.5 mA to 3.5 mA is used, the lifeex-
3.5 a
When a d.c. cathode current range of 1.5 mA to 3.5 mA is used, the lifeex-
2) For bulb temperatures below 0 OC the life expectancy of the tube is substan-
0 OC
2) For bulb temperatures below 0 OC the life expectancy of the tube is substan-
Probe currents to individual cathodes.D.C. anode current range 15to 2.5mA
2.5
Probe currents to individual cathodes.D.C. anode current range 15to 2.5mA
Probe currents to individual cathodes.D.C. anode current range 15 to3.5mA
5
Probe currents to individual cathodes.D.C. anode current range 15 to3.5mA
Peak probe currents to individual cathodes.Pulsed anode current 10mA
10
Peak probe currents to individual cathodes.Pulsed anode current 10mA
(1) With a low impedance voltage source connected to the non-conducting cath-
1 a
(1) With a low impedance voltage source connected to the non-conducting cath-
odes. For example, when using a current range of 1.5 to 2.5 mA and a volt-
2.5 a
odes. For example, when using a current range of 1.5 to 2.5 mA and a volt-
(2) With a separate high impedance connected to each non-conducting cathode
2 a
(2) With a separate high impedance connected to each non-conducting cathode
and returned to a voltage source of less than 115 V. In this case the loadline
115 a
and returned to a voltage source of less than 115 V. In this case the loadline