Data set 01
9999 Mixed E 1000
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater/filament voltage
3.54 V
Filament voltage
Heater/filament current
100 mA
Filament current
Voltage - Triode (single) ·Triode
C412
Zenith Radio C412 Decatron 4 is an early directly heated receiving triode suitable for radio-frequency, intermediate-frequency and audio amplification, detection, and oscillation. Designed for battery-powered Neutrodyne and superheterodyne receivers, it combines a low-current filament with versatile operating characteristics and moderate amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 3.54 V / 100 mA
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 3.54 V
- Nominal heater current
- 100 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 10000 Ω
- Transconductance
- 0.0012 S
- Amplification factor
- 12.5
Zenith Radio C412 Decatron 4 early directly heated receiving triode for RF, IF and AF amplification, detection and oscillation. Published plate operating range 25–120 V, not an explicitly specified absolute maximum. RF service typically 60–90 V; detection approximately 22–45 V. Source gives amplification factor 12–13, transconductance 1.2 mA/V, internal resistance 10 kΩ.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.