6EV7
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BrandSylvania
ClassDuotriode
Base9-Pin Miniature Button
Filament6.3V @ 600mA
Construction
Primary TypeTriode
EnvelopeT-6 1/2
Base MaterialGlass
SectionsTwin
Filament / Heater
Heater NotesBogey value
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation4.5 W
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- Miniature high-mu twin triode
- Separate cathodes
- Designed for relay-control service
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 250V | 5200 | 11500 | 60 | 9.2mA |
| Relay Control - ON Time > 30s | 150V | - | 2500 | - | 10mA |
| Relay Control - ON Time < 30s | 256V | - | 2500 | - | 18.5mA |
Application Notes
Designed for service as a relay-control tube in remote tuning units of television receivers.
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