2C39BA
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BrandSIEMENS
ClassScheibentriode
BaseDisk Contacts
Filament6V @ 975mA
Construction
Primary TypeTriode
EnvelopeMetal-Ceramic
SectionsSingle
Filament / Heater
Warm-up Time60s
Heater NotesIndirect heating, parallel supply; 0.9 to 1.05 A range.
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation100 W
Grid 1 Voltage-150 V
Cathode Current125 mA
Audio Performance
Key Features
- Metal-ceramic technology
- Air-cooled
- High mechanical strength
- Low frequency drift
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Characteristics | 600V | 25000 | - | 100 | 75mA |
| CW Oscillator 2.5 GHz | 600V | - | - | - | 100mA |
| CW Oscillator 2.5 GHz (High) | 800V | - | - | - | 100mA |
| Frequency Doubler | 400V | - | - | - | - |
Application Notes
Designed for oscillators, modulators, power mixers, and amplifiers up to 3.5 GHz. Heater voltage should be adjusted for high frequency/cathode current demands.
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