5R4GY
9 Tubes in archive
BrandBRIMAR
ClassFull-Wave Rectifier
BaseOctal
Construction
Primary TypeDirectly heated
Rectifier TypeFull-Wave
EnvelopeST-16
Base MaterialPhenolic
SectionsDouble Anode
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage2800 V
Cathode Current650 mA
Audio Performance
Key Features
- Industrial Type
- Directly Heated
- A.C. Mains Equipment Use
- High Output
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condenser Input | 750V | - | 250 | - | 250mA |
| Condenser Input | 1000V | - | 575 | - | 150mA |
| Choke Input | 850V | - | - | - | 250mA |
| Choke Input | 1000V | - | - | - | 175mA |
Application Notes
DELAYED SWITCHING of approximately 10 seconds MUST BE EMPLOYED when the following ratings are exceeded with a condenser input filter: 550V RMS @ 250mA, 600V RMS @ 200mA, 650V RMS @ 175mA, 700V RMS @ 150mA, 800V RMS @ 115mA, 900V RMS @ 75mA.
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