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8608

Premium frame-grid power pentode for professional wideband video, pulse, and instrumentation amplification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: E9-23
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 600 mA

Description

The Amperex 8608 is a premium-quality power pentode with 10 W plate dissipation and very high transconductance, intended particularly for wideband video-amplifier service with low output capacitance.

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: E9-23
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 600 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

E9-23 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Transconductance: 0.045 S
Amplification factor: 30
Max plate voltage: 150 V
Max screen voltage: 150 V
Max plate dissipation: 10 W
Max screen dissipation: 1.5 W
Max cathode current: 75 mA

Premium-quality frame-grid power pentode for wideband video amplification.

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 Amperex

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater/Filament Voltage
6.3 V
Published datasheet value
Heater/Filament Current
600 mA
Published datasheet value
Maximum Plate/Anode Voltage
150 V
Published datasheet value
Maximum Plate/Anode Dissipation
10 W
Published datasheet value

Characteristic

Transconductance
45000 µS
Published datasheet value
Amplification Factor
30
Published datasheet value