Tube-number record
21DQP4
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BrandSylvania
ClassTelevision Picture Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular Glass
Base MaterialSmall Shell Duodecal
Sections1
Filament / Heater
Warm-up Time11s
Heater NotesHeater warm-up time measured per JETEC test circuit
Absolute Maximum Ratings
Plate Voltage20000 V
Grid 2 Voltage550 V
Grid 1 Voltage-155 V
H-C Voltage200 V
Audio Performance
Key Features
- Electrostatic Focus
- Magnetic Deflection
- Aluminized PA Phosphor
- Spherical Faceplate
- Gray Filter Glass
- No Ion Trap
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 16000 V | — | — | — | — |
Application Notes
X-ray radiation shielding may be necessary if operated at higher than 16,000 volts.
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