Z71U
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BrandPhilips
ClassTrigger Tube
BaseSubminiature
Construction
Primary TypeCold-cathode
EnvelopeSubminiature
Base MaterialGlass
SectionsTwo starters
Filament / Heater
Absolute Maximum Ratings
Plate Voltage165 V
Grid 1 Voltage90 V
Cathode Current7 mA
Audio Performance
Key Features
- Cold-cathode
- Two starters
- Subminiature
- Low impedance for audio frequencies
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Continuous Service | 63V | - | 499 | - | 5mA |
| Intermittent Service | 63V | - | 499 | - | 8mA |
Application Notes
Intended for use in D.C. supplied circuits, counting and switching circuits, automatic telephone exchanges, and timers. Requires 10 lux ambient light for stable operation; avoid direct sunlight.
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