Tube-number record
8941/Y690
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BrandEIMAC
ClassPlanar Triode
Filament6.3 V @ 2250 mA
Construction
Primary TypeTriode
EnvelopeCeramic/Metal
Base MaterialMetal
SectionsSingle
Filament / Heater
Heater NotesUnipotential oxide coated cathode
Absolute Maximum Ratings
Plate Voltage10000 V
Plate Dissipation750 W
Grid 1 Voltage-350 V
Cathode Current600 mA
Audio Performance
Key Features
- Ceramic/metal construction
- Extended grid to cathode insulator
- Arc-resistant interface matrix cathode
- High transconductance
- High mu
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Average Characteristics | 1000 V | 75000 | — | 200 | — |
| Cathode Biased rf Pulsed Amplifier | 4500 V | — | — | — | — |
| Grid Pulsed Amplifier | 5000 V | — | — | — | — |
Application Notes
Designed for airborne, ground and space applications as a grid or plate pulsed oscillator, amplifier, or frequency multiplier. Y-690 variant specifically processed for series regulator and switch tube service up to 15 KV.
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