E188CC
1 Tube in archive
BrandSiemens
ClassDouble Triode
BaseNoval
Filament6.3V @ 335mA
Construction
Primary TypeDouble Triode
EnvelopeGlass DIN 41539 Form A
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesIndirect heating, AC or DC, parallel supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.65 W
Grid 1 Voltage-110 V
Cathode Current22 mA
H-C Voltage100 V
Audio Performance
Typical THD7%
Power Output0.5 W
Key Features
- Steep transconductance
- Low noise
- Long life
- Shock and vibration resistant
- Low microphony
- Special interface-layer-free cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 90V | 12500 | 2600 | 33 | 15mA |
Application Notes
Particularly suited for low-microphony AF circuits and wideband amplification.
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