Tube-number record
21CSP4
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BrandSylvania
ClassTelevision Picture Tube
BaseCRT base (B12 family)
Filament6.3 V @ 450 mA
Construction
Primary TypeRectangular Glass
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesHeater warm-up time is 11 seconds
Absolute Maximum Ratings
Plate Voltage19600 V
Grid 2 Voltage550 V
Grid 1 Voltage-154 V
H-C Voltage200 V
Audio Performance
Key Features
- Electrostatic Focus
- Magnetic Deflection
- Aluminized Screen
- No Ion Trap
- Gray Filter Glass
- Spherical Faceplate
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Direct Viewed CRT | 16000 V | — | — | — | — |
Application Notes
X-ray radiation shielding may be necessary if operated higher than 16,000 volts.
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