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Voltage - Dual Triode (similar high frequency) ·Triode-Triode

5670

High-frequency medium-mu double triode intended as a general-purpose amplifier, with Class-A voltage-amplifier operation and documented Class-AB1 push-pull power service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
E9-1
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 350 mA

Description

High-frequency medium-mu double triode for Class A voltage amplification and Class AB1 push-pull power service.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
E9-1
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
350 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

E9-1 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
6400 Ω
Transconductance
0.0055 S
Amplification factor
35
Max plate voltage
330 V
Max plate dissipation
1.35 W
Max cathode current
18 mA
Rectifier max heater-cathode voltage
100 V

Representative row for two identical sections; absolute maxima are per section.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
6400 Ω
Transconductance
0.0055 S
Amplification factor
35
Max plate voltage
330 V
Max plate dissipation
1.35 W
Max cathode current
18 mA

Second physical triode restored under current one-row-per-physical-section policy.

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.

Data set 01

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Triode

CrossReference

  • Prototype / equivalent family

    2C51

Application

  • Application

    General-purpose amplifier

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater voltage

    6.3 V

    Nominal

  • Heater current

    350 mA

    Nominal

  • Plate voltage

    200 V

    Published operating table; OperatingPoint1

  • Plate voltage

    150 V

    Published operating table; OperatingPoint1

  • Plate voltage

    200 V

    Published operating table; OperatingPoint1

Data set 03

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    150 V

    ClassA;EachSection

  • Cathode resistor

    240 ohm

    ClassA;EachSection

  • Plate current

    8.2 mA

    ClassA;EachSection

  • Plate voltage

    300 V

    ClassAB;PushPull;TwoSections

  • Cathode resistor

    800 ohm

    ClassAB;PushPull;TwoSections

  • Zero-signal plate current

    4.9 mA

    ClassAB;PushPull;EachSection

  • Maximum-signal plate current

    6.3 mA

    ClassAB;PushPull;EachSection

  • Plate-to-plate load impedance

    27000 ohm

    ClassAB;PushPull

  • Maximum-signal power output

    1 W

    ClassAB;PushPull

  • Total harmonic distortion

    10 %

    ClassAB;PushPull

Characteristic

  • Transconductance

    5500 uS

    ClassA;EachSection

  • Amplification factor

    35

    ClassA;EachSection

Data set 04

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate Voltage

    150 V

    ClassA EachSection

Characteristic

  • Plate Current

    8.2 mA

    ClassA EachSection

  • Maximum-Signal Power Output

    1 W

    ClassAB PushPull

Data set 05

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    - to 330 V

  • Maximum plate dissipation

    - to 1.35 W

  • Maximum cathode current

    - to 18 mA

  • Push-pull plate supply voltage

    300 V

    PushPull

  • Common cathode resistor

    800 Ω

    PushPull

  • Effective load resistance plate-to-plate

    27000 Ω

    PushPull

  • Maximum-signal power output

    1 W

    PushPull

Characteristics

  • Plate resistance

    6400 Ω

  • Transconductance

    5500 µS

  • Amplification factor

    35

  • Plate supply voltage

    150 V

    ClassA

  • Cathode resistor

    240 Ω

    ClassA

  • Amplification factor

    35

    ClassA

  • Plate resistance

    6400 Ω

    ClassA

  • Transconductance

    5500 µS

    ClassA

  • Plate current

    8.2 mA

    ClassA

Capacitance

  • Grid to plate (Each unit)

    1.1 pF

  • Grid to plate

    0.8 to 2 pF

  • Grid to cathode and heater.

    1.7 to 2.7 pF

  • Plate to cathode and heater

    0.7 to 2 pF