Voltage - Dual Triode (similar) ·Triode-Triode
Twin triode intended for television and general amplifier circuitry, providing paired triode sections for voltage amplification, oscillator, or control functions.
Explicit 7AN7 co-designation on the PCC84/7AN7 high-slope double-triode VHF cascode amplifier sheet.
Small-button Noval 9-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
2 physical sections, each with unique specifications.
Section 1
Representative section for two electrically similar triodes.
Section 2
Second triode section.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
340 mA
Nominal
Maximum Plate Voltage
180 V
Maximum Plate Dissipation
2 W
Maximum Cathode Current
20 mA
Transconductance
6000 µS
Typical
Amplification Factor
24
Typical
Plate Resistance
4000 ohm
Typical
Data set 02
Published operating points and test conditions from this source.
Application
VHF cascode amplifier
Two identical triodes
Referenced Characteristics
Type ECC84
Source explicitly refers to ECC84 for further characteristics
Data set 03
Published operating points and test conditions from this source.
Application
RF cascode amplifier
Maximum intended frequency
220 MHz
Data set 04
Published operating points and test conditions from this source.
Maximum Intended Frequency
220 MHz
CascodeRFAmplifier
Transconductance
6000 uS
Each section
Plate Resistance
6700 ohm
Each section
Amplification Factor
40 ratio
Each section