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

7057

Medium-mu twin triode designed for cascode RF amplifier service to approximately 200 MHz, suitable for VHF receiver front ends and related high-frequency amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B9A
Base pins
-
Nominal heater
13.5 V / 180 mA

Description

Medium-mu twin triode for cascode RF amplifier service to about 200 MHz.

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
-
Socket code
B9A
Base pins
-
Nominal heater voltage
13.5 V
Nominal heater current
180 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

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5300 Ω
Transconductance
0.0068 S
Amplification factor
36
Max plate voltage
275 V
Max plate dissipation
2.2 W
Max cathode current
20 mA

Representative row for two identical triodes.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5300 Ω
Transconductance
0.0068 S
Amplification factor
36
Max plate voltage
275 V
Max plate dissipation
2.2 W
Max cathode current
20 mA

Second physical triode section; electrically identical twin section.

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

    6BZ7

Application

  • Application

    Cascode RF amplifier

Other

  • Maximum useful frequency

    200 MHz

Data set 02

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater voltage

    13.5 V

  • Heater current

    180 mA

  • Plate voltage

    150 V

    ClassA;EachSection

  • Plate current

    10 mA

    ClassA;EachSection

  • Maximum plate voltage

    275 V

    EachSection

  • Maximum plate dissipation

    2.2 W

    EachSection

Characteristic

  • Plate resistance

    5300 ohm

    EachSection

  • Transconductance

    6800 uS

    EachSection

  • Amplification factor

    36

    EachSection