Tube-number record
6028/408A
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ClassRF Amplifier Pentode
BaseMiniature 7-pin (B7G)
Filament20 V @ 50 mA
Construction
Primary TypePentode
EnvelopeT 5 1/2
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage200 V
Plate Dissipation1.85 W
Grid 2 Voltage155 V
Grid 1 Voltage-50 V
Cathode Current20 mA
H-C Voltage130 V
Audio Performance
Typical THD12%
Power Output0.325 W
Key Features
- RF amplifier
- broadband amplifier
- Small Button Miniature 7-pin
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 (200 Ohm Bias) | 120 V | 5000 | — | 24 | 7.5 mA |
| Class A1 (130 Ohm Bias) | 120 V | 5600 | 25000 | 24 | 9.4 mA |
Application Notes
Particularly suitable for use as RF amplifier and broadband amplifier.
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