ECF80
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BrandBRIMAR
ClassTriode Pentode Frequency Changer
BaseNoval (B9A)
Filament6.3V @ 430mA
Construction
Primary TypeTriode Pentode
EnvelopeGlass
SectionsSeparate cathodes
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.7 W
Grid 2 Voltage200 V
Cathode Current14 mA
H-C Voltage200 V
Audio Performance
Key Features
- Miniature construction
- Separate cathodes
- Designed for TV frequency changer use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Characteristics | 100V | 5000 | 4000 | 20 | 14mA |
| Pentode Characteristics | 170V | 6200 | 400000 | 47 | 10mA |
| Mixer Operation (Pentode) 1 | 170V | 2200 | - | - | 6.5mA |
| Mixer Operation (Pentode) 2 | 170V | 2100 | - | - | 5.2mA |
Application Notes
Specifically designed for use as a frequency changer in television equipment up to 220 MHz.
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