262A
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BrandWestern Electric
ClassLow-power triode
BaseMedium four-pin thrust type
Filament10V @ 320mA
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialSilver-plated pins
SectionsSingle
Filament / Heater
Heater NotesAC or DC operation; voltage basis operation
Absolute Maximum Ratings
Plate Voltage180 V
H-C Voltage90 V
Audio Performance
Power Output90 W
Key Features
- Minimize hum
- Minimize microphonic noise
- Silver-plated pins
- Top cap grid terminal
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended | 90V | 600 | 23800 | 14.3 | 0.9mA |
| Recommended | 112.5V | 770 | 19100 | 14.7 | 1.6mA |
| Recommended | 135V | 980 | 15400 | 15.1 | 2.8mA |
| Maximum | 180V | 910 | 16200 | 14.7 | 2.8mA |
Application Notes
Audio-frequency amplifier where alternating current is used for heating and exceptionally low tube noise is required. May be mounted in any position.
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