Tube-number record
HY40Z
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BrandHytronic Laboratories
ClassTriode
Base4-pin
Construction
Primary TypeTriode
EnvelopeST-19
Base MaterialCeramic
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation40 W
Grid 1 Voltage-150 V
Cathode Current115 mA
Audio Performance
Key Features
- Processed Graphite Plate
- Molybdenum-Nickel Grid
- Processed Lava Insulation
- Zero-Bias Class B Operation
- High efficiency R.F. Amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Average Characteristics | 1000 V | 4200 | 19000 | 80 | 115 mA |
| A.F. Class B Modulator (Two Tubes) | 1000 V | — | 1725 | — | 280 mA |
| R.F. Power Amplifier Class C Telegraphy | 1000 V | — | — | — |
Application Notes
The Hytron HY40Z tube is a high efficiency triode of rugged construction. Two type HY40Z's may be operated at zero-bias up to full ratings as an audio power amplifier. Internal structure permits operation at maximum rating at frequencies up to 60 megacycles.
Datasheets
Datasheet: HY40Z.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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