Tube-number record
8156
0 archive entries
8156 is a tube type in the TubeDatabase archive (class: Compactron Beam Pentode). Recorded specifications: brand General Electric, year 1964, construction Beam tetrode / beam power, base Glass, socket Compactron, maximum plate voltage 600 V, and maximum plate dissipation 13 W. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassCompactron Beam Pentode
BaseCompactron
Filament13.5 V @ 0.3 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeT-9 Glass
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesHeater supply variation restricted to maintain voltage within specified tolerance
Absolute Maximum Ratings
Plate Voltage600 V
Plate Dissipation13 W
Grid 2 Voltage250 V
Grid 1 Voltage-100 V
Cathode Current100 mA
H-C Voltage100 V
Audio Performance
Key Features
- Compactron design
- Mobile equipment RF power amplifier
- CCS, ICAS, and IMS ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Average Characteristics | 200 V | 7600 | — | — | — |
| RF Power Amplifier Class C (CCS) | 250 V | — | — | — | 100 mA |
| RF Power Amplifier Class C (ICAS) | 300 V | — | — | — | 95 mA |
| RF Power Amplifier Class C (IMS) | 400 V | — | — | — | 90 mA |
Application Notes
The 8156 is designed for use as a radio-frequency power amplifier in mobile equipment. IMS (Intermittent Mobile Service) ratings allow for high power output for short intervals (max 15s on).
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