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Voltage - Triode (single) ·Triode

M8080

Special-quality RF power triode for amplifier or oscillator service in equipment subject to vibration and shock.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 150 mA

Description

Special-quality RF power triode for power-amplifier or oscillator service in equipment subject to vibration and shock.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
150 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
Plate resistance
7700 Ω
Transconductance
0.0022 S
Amplification factor
17
Max plate voltage
330 V
Max plate dissipation
3.8 W
Max cathode current
21 mA

Special-quality RF power triode.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    150 mA

  • Plate Voltage

    250 V

  • Plate Current

    10.5 mA

  • Transconductance

    2200 uS

  • Amplification Factor

    17 ratio

  • Plate Resistance

    7700 ohm

  • Output Capacitance

    1.2 pF

Other

  • Maximum Operating Frequency

    150 MHz

  • Maximum Plate Supply Voltage

    550 V

  • Maximum Plate Voltage

    330 V

  • Maximum Plate Dissipation

    3.8 W

  • Maximum Negative Grid Voltage

    -110 V

  • Maximum Grid Current

    55 mA

  • Maximum Cathode Current

    21 mA

Data set 02

1967 Mullard Receiving Tubes for Maintenance

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Cout

    1.2 pF

    Published in approved M8080.pdf target datasheet; Section1

  • Cin — 1.35

    2.25 pF

    Published in approved M8080.pdf target datasheet; Section1

  • Cout —_ 098

    1.62 pF

    Published in approved M8080.pdf target datasheet; Section1

  • e — 1.2

    2 pF

    Published in approved M8080.pdf target datasheet; Section1

  • 3.25. 25

    4 mA

    Published in approved M8080.pdf target datasheet; Section1

  • 2.82 3.68

    0.33 mA

    Published in approved M8080.pdf target datasheet; Section1

Other

  • Ig max

    5.5 mA

    Published in approved M8080.pdf target datasheet; Section1

  • Ik max

    21 mA

    Published in approved M8080.pdf target datasheet; Section1

  • Maximum acceleration (continuous operation)

    2.5 g

    Published in approved M8080.pdf target datasheet; Section1

  • Maximum shock (short duration)

    500 g

    Published in approved M8080.pdf target datasheet; Section1

  • T b u 1b max

    170 °C

    Published in approved M8080.pdf target datasheet; Section1

  • Anode curre nt { - - - 9.0 12

    1.22 mA

    Published in approved M8080.pdf target datasheet; Section1

  • Mutual co nductance - - 2.0 2.4

    0.157 mA

    Published in approved M8080.pdf target datasheet; Section1

  • Anode current. Vy = =30V 2.5

    50 µA

    Published in approved M8080.pdf target datasheet; Section1

  • f =

    150 MHz

    Published in approved M8080.pdf target datasheet; Section1

  • No other vo ltages applied,

    5 g

    Published in approved M8080.pdf target datasheet; Section1

  • No applied volt ages ,

    500 g

    Published in approved M8080.pdf target datasheet; Section1