Tube-number record
25DQ6A
0 archive entries
BrandTung-Sol
ClassBeam Power Pentode
BaseOctal
Filament25 V @ 0.3 mA
Construction
Primary TypePentode
EnvelopeT-12
Base MaterialShort Medium-Shell
Sections1
Filament / Heater
Heater NotesAC OR DC
Absolute Maximum Ratings
Plate Voltage700 V
Plate Dissipation15 W
Grid 2 Voltage200 V
Grid 1 Voltage-50 V
Cathode Current140 mA
H-C Voltage200 V
Audio Performance
Key Features
- High-perveance
- Horizontal deflection amplifier
- Controlled heater warm-up
- Skirted miniature cap
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Condition 1) | 60 V | — | — | — | 200 mA |
| Class A Amplifier (Condition 2) | 150 V | — | — | 4.1 | — |
| Class A Amplifier (Condition 3) | 250 V | 6600 | 20900 | — | 75 mA |
Application Notes
Designed for use as a horizontal deflection amplifier tube in high efficiency deflection circuits of television receivers.
0 results