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Tube-number record
ECC186
1 archive entry
BrandPhilips
ClassDouble Triode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
Construction
Primary TypeDual triode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; parallel supply
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.75 W
Grid 1 Voltage-100 V
Cathode Current20 mA
H-C Voltage90 V
Audio Performance
Key Features
- Maintains emission capabilities after long periods of cut-off
- Medium mu amplification factor
- Designed for computer applications
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Setting 1 | 250 V | 2200 | 7700 | 17 | 10.5 mA |
| Setting 2 | 100 V | 3100 | 6250 | 19.5 | 11.8 mA |
| Cut-off | 250 V | — | — | — | 0.03 mA |
Application Notes
The tube is intended for use in calculating machines and similar computer applications where it must remain in a cut-off state for extended periods.
Datasheets
Datasheet: ECC186.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.