Specialized - Cathode Ray ·CathodeRay
Multi-electrode electrostatic-deflection CRT with post-deflection acceleration and precision deflection-factor control. Sylvania specifies approximately 10.5 kV capability for accurate specialized instrumentation.
Multi-electrode electrostatic-deflection CRT with post-deflection acceleration and precision deflection-factor control.
Keyed 25-contact CRT base family (JEDEC B25-139)
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published ratings and characteristics promoted semantically from the approved source.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Maximum Plate Voltage
10500 V
Typical Anode Voltage
7500 V
Focusing Method
Electrostatic
Deflecting Method
Electrostatic
Data set 02
Published operating points and test conditions from this source.
Heater voltage
6.3 V
Heater current
600 mA
Focusing method
Electrostatic
Deflection method
Electrostatic
Post-deflection acceleration
Present
Deflection-factor uniformity
2 %
Maximum principal anode/accelerator voltage
10500 V
Anode3 voltage maximum
10500 V
Anode2 voltage maximum
3500 V
Anode3-to-anode2 voltage ratio maximum
4
Typical anode3 voltage
7500 V
Grid1 cutoff range
-45 to -80 V
Anode3 helix current maximum
30 uA
Grid1 circuit resistance maximum
1.5 Mohm
Deflection-circuit resistance maximum
1 Mohm
Application
Multi-electrode electrostatic-deflection CRT