Tube-number record
7Y4
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BrandSylvania
ClassFull-wave Rectifier
BaseLoctal
Filament7 V @ 530 mA
Construction
Primary TypeRectifier
EnvelopeT-9
Sectionsdual
Filament / Heater
Absolute Maximum Ratings
Plate Voltage450 V
Cathode Current70 mA
H-C Voltage450 V
Audio Performance
Key Features
- Lock-In construction
- Ruggedized
- Cathode heater type
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condenser Input | 325 V | — | 150 | — | 70 mA |
| Choke Input | 450 V | — | — | — | 70 mA |
Application Notes
Designed for service in small auto and AC receivers. It is similar to the older 6X5GT and 84 but is smaller physically and is considerably more rugged due to the Lock-In construction.
Datasheets
Datasheet: 7Y4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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