5591/403B
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ClassRF Amplifier Pentode
BaseSmall Button Miniature 7-pin
Filament6.3V @ 150mA
Construction
Primary TypePentode
EnvelopeT 5 1/2
SectionsSingle
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage200 V
Plate Dissipation1.85 W
Grid 2 Voltage155 V
Grid 1 Voltage-50 V
Cathode Current20 mA
H-C Voltage100 V
Audio Performance
Key Features
- Longlife replacement
- Broadband amplifier
- Low transit time loading
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 | 130V | 5100 | 350000 | 28 | 8mA |
| Class A1 | 180V | 5000 | 500000 | 28 | 7.7mA |
Application Notes
The 5591/403B is an excellent longlife replacement for types 5654 and 6AK5.
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