ECH 8000
0 Tubes in archive
BrandTELEFUNKEN
ClassRemote cutoff heptode with triode
BasePico 9 (Noval)
Filament6.3V @ 320mA
Construction
Primary TypeMulti-section
EnvelopeGlass
SectionsHeptode, Triode
Filament / Heater
Heater NotesIndirectly heated, parallel supply
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1.1 W
Grid 2 Voltage300 V
Cathode Current20 mA
H-C Voltage100 V
Audio Performance
Key Features
- Reliability Factor P: 1.5/1000h
- Long life: 10,000 hours guaranteed
- Vibration and shock proof (2.5g continuous, 500g momentary)
- Cathode free from interface layer
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Heptode as RF/IF amplifier | 250V | 5000 | 600000 | 20 | 8mA |
| Triode section (Measuring values) | 100V | 4200 | - | 18 | 11mA |
| Heptode as mixer | 250V | 1500 | 700000 | - | 4mA |
Datasheet Viewer
Loading datasheet...
Sort by
Showing 1 to 0 of 0 results