5703WB

Military ruggedized 5703 version for UHF oscillator, Class C amplifier, and frequency-multiplier service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 5
Nominal heater: 6.3 V / 200 mA

Description

The 5703WB is a military version of the 5703 subminiature medium-mu triode, intended for UHF oscillator, Class C amplifier, and frequency-multiplier applications.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 5
Nominal heater voltage: 6.3 V
Nominal heater current: 200 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

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.005 S
Amplification factor: 25.5
Max plate voltage: 275 V
Max plate dissipation: 3.3 W
Max cathode current: 22 mA
Rectifier max heater-cathode voltage: 100 V

Representative published UHF triode ratings and typical operation.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage
6.3 V
Nominal
Heater current
200 mA
Nominal
Plate voltage
275 V
Published operating table; OperatingPoint1
Plate voltage
120 V
Published operating table; OperatingPoint1

Characteristic

Plate current
22 mA
Published operating table; OperatingPoint1
Plate current
9.6 mA
Published operating table; OperatingPoint1
Transconductance
5000 uS
Published operating table; OperatingPoint1

Capacitance

Grid-to-plate capacitance
1.2 pF
Without shield
Input capacitance
2.6 pF
Without shield
Output capacitance
0.7 pF
Without shield

Data set 02

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Grid-to-plate capacitance
1.2 pF
WholeTube
Input capacitance
2.6 pF
WholeTube
Output capacitance
0.7 pF
WholeTube

Other

Maximum plate voltage
275 V
WholeTube
Maximum plate dissipation
3.3 W
WholeTube
Maximum plate current
22 mA
WholeTube
Maximum grid current
5.5 mA
WholeTube
Maximum heater-cathode voltage
100 V
WholeTube
Plate voltage
120 V
TypicalOperation
Cathode bias resistance
220 ohm
TypicalOperation
Plate current
9.6 mA
TypicalOperation
Transconductance
5000 µS
TypicalOperation
Amplification factor
25.5
TypicalOperation
Oscillator power output
180 mW
UHF, 400 MHz minimum test