EC 56
0 Tubes in archive
BrandPHILIPS
ClassDisc-seal triode
BaseThreaded / Disc-seal
Filament6.3V @ -mA
Construction
Primary TypeTriode
EnvelopeMetal-glass disc-seal
Base MaterialMetal
Sections1
Filament / Heater
Heater NotesIndirect heating by A.C. or D.C.; parallel supply
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation10 W
Grid 1 Voltage-50 V
Cathode Current35 mA
H-C Voltage50 V
Audio Performance
Power Output0.5 W
Key Features
- Disc-seal construction
- Grounded grid circuit design
- Broad-band microwave amplifier
- Low level general purpose amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| General Purpose Amplifier | 180V | 17000 | - | 43 | 30mA |
| Microwave Amplifier (4000 MHz) | 200V | - | - | - | 30mA |
Application Notes
Special attention should be paid to mounting in transportable equipment to avoid shocks perpendicular to the tube axis. A low velocity air flow may be required for cooling.
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