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Power - Tetrode (NOT beam) ·Tetrode

6252

Twin high-frequency tetrode developed from the 832A for RF amplifier, frequency-multiplier, and modulator service. Its paired tetrode structure supports balanced high-frequency power circuits.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 650 mA

Description

Twin high-frequency tetrode, a high-frequency development of the 832A, for amplifier, multiplier, and modulator service.

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
12.6 V
Nominal heater current
650 mA
Parallel heater voltage
6.3 V
Parallel heater current
1.3 A
Series capable
Yes

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

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0025 S
Amplification factor
8.5
Max plate voltage
600 V
Max screen voltage
250 V
Max plate dissipation
10 W
Max cathode current
55 mA

Promoted ratings/characteristics are source-published values; additional published values and operating examples are preserved in the parameter table.

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

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Maximum frequency

    600 MHz

    ClassC

  • Heater voltage series

    12.6 V

    Series

  • Heater current series

    450 mA

    Series

  • Heater voltage parallel

    6.3 V

    Parallel

  • Heater current parallel

    1.3 A

    Parallel

  • Peak cathode current per section

    260 mA

    PerSection

Data set 02

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Heizstrom Te D

    6.65 A

    Heizstrom Te D 06,65 A

  • f 200 200 400 400

    600 MHz

    f 200 200 400 400 600 MHz

  • i 200 200

    400 MHz

    i 200 200 400 MHz

  • Ua‘ 500 300

    300 V

    Ua‘ 500 300 300 V

  • Ug2 e 250

    250 V

    Ug2 e 250 250 V

  • Ug1 —80 —50 =

    50 V

    Ug1 —80 —50 =50 V

  • Ia 2x40 2x40 2x

    40 mA

    Ia 2x40 2x40 2x40 mA

  • Iéä" 2x4 05 2x

    3 mA

    Iéä" 2x4 05 2x3 mA

  • Ig1 2x1 2x1 2x

    1 mA

    Ig1 2x1 2x1 2x1 mA

  • Qa ' 2x4 ,5 229

    255 W

    Qa ' 2x4 ,5 229 255 W

  • Qg2 2x1 2x1

    20715 W

    Qg2 2x1 2x1 20715 W

  • BA 31 Wr

    12 W

    BA 31 Wr 12 W

  • N E 71

    54 %

    N E 71 54 %

  • f 66,7/200 133/

    400 MHz

    f 66,7/200 133/400 MHz

  • Ua mod maxX

    500 V

    Ua mod maxX 500 V

  • Ug1 min

    75 V

    Ug1 min 75 V

  • Steuergitterverlustistg. Qgı max 2x0

    5 W

    Steuergitterverlustistg. Qgı max 2x0;5 W

  • ] rungen darf

    1 %

    ] rungen darf 1%80°C nicht übersteigen.

  • f =

    150 MHz

    f = 150 MHz bei U, 600 V

  • f ®

    200 MHz

    f ® 200 MHz bei U, 500 V

  • f=

    430 MHz

    f= 430 MHz bei Ua 300 7

  • In der wievielten Stufe arbeitet die Röhre@?

    0 mA

    In der wievielten Stufe arbeitet die Röhre@?...............0000000000 A

Characteristic

  • Schirmgitterspannung Ug2

    250 A

    Schirmgitterspannung Ug2 250 A'd

  • Anodenstrom Ia

    20 mA

    Anodenstrom Ia 20 mA

  • Steilheit | S

    2.5 mA

    Steilheit | S 2,5 mA/Y

  • Anodenspannung Ua RO

    600 V

    Anodenspannung Ua RO 600 V

  • Kathodenstrom ;k Ka

    2555 mA

    Kathodenstrom ;k Ka 2555 mA

  • Gitterstrom ig1 Ar

    2245 mA

    Gitterstrom ig1 Ar 2245 mA

Data set 03

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • Amplification Factor

    8.5

  • Maximum frequency

    300 MHz

Other

  • Maximum plate dissipation

    20 W

    CCS

  • Maximum plate dissipation

    25 W

    ICAS

  • Plate voltage

    600 V

    CCS ClassC

  • Plate current

    100 mA

    CCS ClassC

  • Power output

    42 W

    CCS ClassC

  • Grid voltage

    -60 V

    CCS ClassC

  • Screen voltage

    250 V

    CCS ClassC

  • Plate voltage

    750 V

    ICAS ClassC

  • Plate current

    150 mA

    ICAS ClassC

  • Power output

    79 W

    ICAS ClassC

Data set 04

1959 Telefunken

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Maximum RF amplifier frequency

    600 MHz

  • Class-C operation

    Published

    ClassC

Application

  • Application

    RF / AF amplifier

Data set 05

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Plate voltage

    600 V

    RFPowerAmplifier;CCS;EachSection

  • Plate current

    100 mA

    RFPowerAmplifier;CCS;EachSection

  • Power output

    42 W

    RFPowerAmplifier;CCS

  • Control-grid voltage

    -60 V

    RFPowerAmplifier;CCS

  • Grid current

    1.4 mA

    RFPowerAmplifier;CCS

  • Screen voltage

    250 V

    RFPowerAmplifier;CCS

  • Plate voltage

    750 V

    RFPowerAmplifier;ICAS;EachSection

  • Plate current

    150 mA

    RFPowerAmplifier;ICAS;EachSection

  • Power output

    79 W

    RFPowerAmplifier;ICAS

  • Grid current

    2 mA

    RFPowerAmplifier;ICAS

  • Maximum frequency at full input

    300 MHz

    RFPowerAmplifier

Capacitance

  • Input capacitance

    4 pF

    EachSection

  • Output capacitance

    1.3 pF

    EachSection