Similar dissimilar dual triode for vertical deflection but Novar base (not Compactron) — different pin topology, not a drop-in
Electrical Specifications
Section 1 — High-Mu Triode
Absolute Maximum
Anode Voltage (max)Max DC Plate Voltage330V
Anode Dissipation (max)Max Plate Dissipation1W
Heater-to-Cathode Voltage (max)Max Heater-Cathode Voltage200V
Max Grid ResistorMax Grid Circuit Resistance2.2MΩ
Typical Operating
Notes
Dissimilar dual triode: Unit No.1 (high-mu, pins 9/10/11) is a small-signal triode (mu=65, ra=40500 ohm, Pa_max=1W); Unit No.2 (medium-mu, pins 3/5/7) is a power triode (mu=6, ra=920 ohm, Pa_max=7W).
Compactron 12-pin base (Small-Button Duodecar, JEDEC No. E12-70). Basing designation for bottom view: 12EO.
Pin 2 is no internal connection. Pin 4 is no internal connection. Pin 6 is no internal connection. Pin 8 is do not use.
Maximum heater-cathode voltage: 200V peak (negative), 200V peak (positive), 100V DC component.
Grid-voltage for plate current = 25 is -30V (Unit 1) and grid-voltage for plate current = 50 is not specified (Unit 2).
Grid-circuit resistance max 2.2 megohms for both sections.
Pin Layout — Compactron
1Heater
2
Socket-Compatible Tubes ⚠ Not electrically compatible