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8150

Double-ended beam-power VHF pentode designed for Class-C RF power-amplifier and oscillator service, producing roughly 40 watts at 175 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: E12-74
Socket code: B12C
Base pins: 12
Nominal heater: 13 V / 600 mA

Description

Double-ended beam-power VHF pentode for RF power-amplifier and oscillator service, with center-tapped heater for 6.5 or 13 V operation.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: E12-74
Socket code: B12C
Base pins: 12
Nominal heater voltage: 13 V
Nominal heater current: 600 mA
Parallel heater voltage: 6.5 V
Parallel heater current: 1.2 A
Series capable: Yes

E12-74 - 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

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.0075 S
Amplification factor: 4.5
Max plate voltage: 750 V
Max screen voltage: 250 V
Max plate dissipation: 35 W
Max screen dissipation: 3.3 W
Max cathode current: 220 mA

Beam-power VHF RF section; Class C ratings and 175 MHz operation retained in parameters.

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

Beam Power

Other

Heater voltage
13 V
Nominal
Heater current
600 mA
Nominal
Maximum operating frequency
175 MHz
ClassC
Power output
40 W
ClassC; 175 MHz
Plate voltage
200 V
Published operating table; OperatingPoint1
Plate voltage
380 V
Published operating table; OperatingPoint1
Plate voltage
750 V
Published operating table; OperatingPoint1
Screen voltage
200 V
Published operating table; OperatingPoint1
Screen voltage
250 V
Published operating table; OperatingPoint1
Screen voltage
250 V
Published operating table; OperatingPoint2

Characteristic

Plate current
100 mA
Published operating table; OperatingPoint1
Plate current
180 mA
Published operating table; OperatingPoint1
Plate current
25 mA
Published operating table; OperatingPoint1

Data set 02

1965 Tung Sol Industrial Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Heater voltage
13 V
Heater current
600 mA
Maximum heater-cathode voltage
135 V
Maximum frequency
175 MHz
ICAS
Typical plate voltage
380 V
ClassC 175MHz
Typical power output
40 W
ClassC 175MHz

Capacitance

Grid1-plate capacitance
0.2 pF
Input capacitance
13 pF
Output capacitance
6.5 pF

Data set 03

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Heater voltage series
13 V
Heater current series
600 mA
Heater voltage parallel
6.5 V
Heater current parallel
1.2 A
Maximum heater-cathode voltage
135 V
Class C plate voltage
450 V
175MHz
Class C plate voltage
750 V
60MHz
Class C cathode current
220 mA
Plate dissipation
35 W
Grid #2 dissipation
3.3 W
Plate voltage
380 V
ClassC;175MHz
Plate current
180 mA
ClassC;175MHz
Grid #2 current
12 mA
ClassC;175MHz
Driving power
2 W
ClassC;175MHz
Power output
40 W
ClassC;175MHz

Characteristic

Plate voltage
200 V
AverageStatic
Screen voltage
200 V
AverageStatic
Plate current
100 mA
AverageStatic
Transconductance
7500 uS
AverageStatic
Triode-connected amplification factor
4.5
TriodeConnection

Capacitance

Grid #1-to-plate capacitance
0.02 pF
Input capacitance
13 pF
Output capacitance
6.5 pF