5902WA

Special-quality subminiature beam pentode for rugged audio power-amplifier service, with military-style shock, vibration, and altitude ratings.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 9DE
Socket code: B7G
Base pins: 8
Nominal heater: 6.3 V / 450 mA

Description

Special-quality subminiature heater-cathode beam pentode for rugged audio power-amplifier service, with military-style shock, vibration and altitude ratings.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 9DE
Socket code: B7G
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 450 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9DE - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN12P	B	P — Plate (Anode) EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN22G1	B	G1 — Control Grid EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN32K	B	K — Cathode EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN4H	—	H — Heater EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN5H	—	H — Heater EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN61P	A	P — Plate (Anode) EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN71G1	A	G1 — Control Grid EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN81K	A	K — Cathode EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN9IS	A	IS — Internal Screen EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances

Plate resistance: 15000 Ω
Transconductance: 0.0042 S
Max plate voltage: 250 V
Max screen voltage: 155 V
Max plate dissipation: 3.7 W
Max screen dissipation: 0.4 W
Max cathode current: 50 mA

Published maximum ratings and characteristics promoted from the approved source; repeated identical sections compressed where applicable.

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
450 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Plate Dissipation
3.7 W
Maximum Cathode Current
60 mA

Characteristic

Transconductance
4200 µS
Typical
Plate Resistance
15000 ohm
Typical

Data set 02

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Heater voltage
6.3 V
Heater current
450 mA
Peak plate voltage
360 V
Altitude rating
80000 ft
Signal power output
1 W
ClassA
Maximum plate voltage
250 V
Maximum screen voltage
155 V
Maximum plate dissipation
3.7 W
Maximum screen dissipation
0.4 W
Maximum cathode current
50 mA

Characteristic

Plate voltage
110 V
Screen voltage
110 V
Cathode bias resistor
270 ohm
Plate current
30 mA
Screen current
2.2 mA