ECC865

Long-life dual triode intended for industrial circuitry, providing two amplifier sections for applications requiring extended service life and dependable operation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 435 mA

Description

Long-life dual triode intended for industrial circuits.

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: 435 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: 0.0064 S
Amplification factor: 58
Max plate voltage: 250 V
Max plate dissipation: 2.3 W

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed where applicable.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0064 S
Amplification factor: 58
Max plate voltage: 250 V
Max plate dissipation: 2.3 W

Second physical triode restored.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater voltage
6.3 V
Published nominal value
Heater current
435 mA
Published nominal value
Transconductance
6400 µS
Published operating characteristic

Other

Maximum plate dissipation
2.3 W
Published maximum rating