Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Triode ·Triode

A0897

High-mu planar transmitting triode designed for grounded-grid microwave oscillator and amplifier service. Its low-inductance metal-ceramic construction and very low interelectrode capacitance support operation well into the microwave frequency range.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 1.03 A

Description

The A-0897 is a metal-and-ceramic, high-mu planar triode designed for grounded-grid oscillator or amplifier service at frequencies as high as 2500 megacycles.

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
1.03 A
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
0.0248 S
Amplification factor
95
Max plate voltage
1000 V
Max plate dissipation
10 W
Max grid dissipation
2 W
Max cathode current
125 mA

Planar metal-ceramic triode. Maximums use the Class C telegraphy absolute-maximum block, the highest published applicable absolute ratings.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Current at Ef

    6.3 V

    GENERAL

  • Heater Voltage

    4.5 to 6.3 V

    MAXIMUM RATINGS

  • DC Plate Voltage

    1000 V

    MAXIMUM RATINGS

  • Negative DC Grid Voltage

    150 V

    MAXIMUM RATINGS

  • Peak Positive RF Grid Voltage

    30 V

    MAXIMUM RATINGS

  • Peak Negative RF Grid Voltage

    400 V

    MAXIMUM RATINGS

  • DC Grid Current

    50 mA

    MAXIMUM RATINGS

  • DC Cathode Current

    125 mA

    MAXIMUM RATINGS

  • Plate Dissipation#

    10 W

    MAXIMUM RATINGS

  • Grid Dissipation

    2 W

    MAXIMUM RATINGS

  • DC Plate Voltage

    600 V

    MAXIMUM RATINGS

  • DC Cathode Current

    100 mA

    MAXIMUM RATINGS

  • Plate DissipationA

    7 W

    MAXIMUM RATINGS

  • Heater current of a bogey tube at Ef

    6.3 V

    contact your General Electric tube sales representative

  • audio-frequency envelope does not exceed

    115 %

    contact your General Electric tube sales representative

  • # With an adequate heat sink the maximum dissipation rating is

    100 W

    contact your General Electric tube sales representative

  • With an adequate heat sink the maximum dissipation rating is

    70 W

    contact your General Electric tube sales representative

  • voltage does not exceed

    1200 V

    contact your General Electric tube sales representative

  • o Adjusted for Ib

    75 mA

    contact your General Electric tube sales representative

  • 730 CLASS

    2 A

    contact your General Electric tube sales representative

Characteristic

  • Grid to Plate (g to p)

    2.01 pF

    Direct Interelectrode Capacitances

  • Grid to Cathode (g to k)

    6.5 pF

    Direct Interelectrode Capacitances

  • Plate to Cathode (p to k)

    0.023 pF

    Direct Interelectrode Capacitances

  • Heater Voltage

    6.3 V

    Average Characteristics

  • Plate Voltage

    600 V

    Average Characteristics

  • Transconductance

    24800 uS

    Average Characteristics

  • Plate Current

    75 mA

    Average Characteristics

  • Frequency 500

    2500 MHz

    Average Characteristics

  • Heater Voltage 6 0

    5 V

    Average Characteristics

  • DC Plate Voltage 900

    900 V

    Average Characteristics

  • DC Plate Current 90

    90 mA

    Average Characteristics

  • DC Grid Current 30

    27 mA

    Average Characteristics

  • DC Grid Voltage

    40 to 22 V

    Average Characteristics

  • Useful Power Output 40

    17 W

    Average Characteristics

  • Ef 6 3 volts 950 1030

    1100 mA

    Average Characteristics

  • Ef 6 3 volts Eb

    600 V

    Average Characteristics

  • Ib 75 ma -1 3

    -2.5 to 3.5 V

    Average Characteristics

  • Ib 1 0 ma -7 0

    -9.5 to 15 V

    Average Characteristics

  • Ec adjusted for Ib

    75 mA

    Average Characteristics

  • Ec adjusted for Ib 75 ma 22000 24800

    27500 uS

    Average Characteristics

  • Ec adjusted for Ib 75 ma

    3 uA

    Average Characteristics

  • Grid to Cathode at

    500 V

    Average Characteristics

  • Grid to Plate (g to p) 1 89 2 01 2

    13 pF

    Interelectrode Capacitances

  • Grid to Cathode (g to k) 6 0 6 5

    7 pF

    Interelectrode Capacitances

  • Plate to Cathode (p to k) 0 018 0 023

    0.029 pF

    Interelectrode Capacitances

  • 1000 volts Ib

    90 mA

    Interelectrode Capacitances

  • of flashover when

    1000 V

    Interelectrode Capacitances

  • is centered at some value within the range of

    4.5 to 6.3 V

    Interelectrode Capacitances