ZD3XH

Forced-air-cooled thoriated-tungsten modulating power triode for audio or RF amplification through approximately 60 MHz and voltage-stabilizer service. Approximately 3 kW dissipation and 6 kV capability support substantial power.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B5F
Base pins: -
Nominal heater: -

Description

Forced-air-cooled thoriated-tungsten modulating triode with 3 kW anode dissipation for AF or RF amplification up to 60 MHz and voltage-stabilizer service.

Socket description

Giant 5-contact all-glass base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B5F
Base pins: -
Nominal heater voltage: -
Nominal heater current: -
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

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.03 S
Max plate voltage: 6000 V
Max plate dissipation: 3000 W
Max grid dissipation: 25 W

Semantically matched promoted fields only.

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

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum Plate Dissipation
3000 W
Maximum Frequency
60 MHz

Data set 02

1966 Tesla Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Uf
7 to 7.5 V
If
41 A to 48 A
3HALIEHII$I Ua max.
4 kV
Ua sp max.
6 kV
Wa max.
3 kW
Wg1 max.
25 W
f max.
60 Mc/s
OXJ
1 A

Capacitance

Cg/k
38 pF
Ca/k
2.5 pF
Ca/g1
26 pF

Characteristic

S
30 mA/V
R,
500 ohm
ie
14 A