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Tube-number record
E188CC
1 archive entry
BrandSiemens
ClassDouble Triode
BaseNoval (B9A)
Filament6.3 V @ 335 mA
Construction
Primary TypeDual 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 | 90 V | 12500 | 2600 | 33 | 15 mA |
Application Notes
Particularly suited for low-microphony AF circuits and wideband amplification.
Datasheets
Datasheet: E188CC.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.