7498
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BrandBrimar
ClassHigh Slope Pentode
BaseB7G
Filament6.3V @ 0.3mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesPure tungsten heater designed to withstand frequent heater switching.
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation3 W
Grid 2 Voltage300 V
H-C Voltage150 V
Audio Performance
Key Features
- Rugged electrode construction
- Semi-automatic assembly
- Low catastrophic failure rate
- Inhibited cathode interface resistance growth
- Tightly controlled glass strain patterns
- Very low change in inter-electrode capacitances
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Bogey Value | - | 7620 | - | 75 | 9.85mA |
Application Notes
Specifically designed for RF and IF applications requiring high slope and reliability.
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