3A/142A
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ClassRepeater Triode
BaseAmerican medium 4 pin bayonet
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide-coated
Absolute Maximum Ratings
Plate Voltage190 V
Cathode Current1.5 mA
Audio Performance
Key Features
- Oxide-coated filament
- Repeater Triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 130V | 473 | 63000 | 29.8 | 0.58mA |
| Typical | 130V | 567.9 | 53000 | 30.1 | 0.85mA |
| Maximum Operating Conditions | 190V | 702.3 | 43000 | 30.2 | 1.46mA |
Application Notes
3A/142AY is the 3A/142A tested to special limits for replacement purposes only.
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