Tube-number record
ECH 200
0 archive entries
ECH 200 is a tube type in the TubeDatabase archive (class: Triode-Heptode). Recorded specifications: brand CIFTE / MAZDA BELVU, year 1968, construction Multi-section, socket Special / none, maximum plate voltage 250 V, and maximum plate dissipation 1.5 W. The archive does not yet hold a photographed example of this type.
BrandCIFTE / MAZDA BELVU
ClassTriode-Heptode
BaseSpecial / none
Filament6.3 V @ 435 mA
Construction
Primary TypeMulti-section
EnvelopeA22-2
Sections2
Filament / Heater
Heater NotesIndirect heating, parallel supply
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 100 V | 8800 | — | 50 | 9 mA |
| Heptode Section | 14 V | — | — | — | 1.5 mA |
Application Notes
Specifically designed for TV synchronization signal separation and amplification according to CCIR standards.
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