6DZ8

Combination high-mu triode and beam-power pentode designed for two-stage audio-frequency amplification, integrating voltage gain and power output in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 900 mA

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: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 900 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

Transconductance: 0.0014 S
Amplification factor: 200
Max plate voltage: 150 V
Max plate dissipation: 0.75 W
Max cathode current: 5 mA

Triode section; maximum plate voltage was not legible enough for promotion from the supplied OCR, so published dissipation/current and characteristics are retained.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.0075 S
Max plate voltage: 150 V
Max screen voltage: 135 V
Max plate dissipation: 6.5 W
Max screen dissipation: 1.5 W
Max cathode current: 60 mA

Power-pentode section; ratings table in source is partially OCR-degraded, so only clearly legible values are promoted.

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

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate current
0.8 mA
TriodeSection

SECTION 2

Beam Power

Other

Screen voltage
120 V
PentodeSection
Plate current
45 mA
PentodeSection
Screen current
6 mA
PentodeSection