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Voltage Dual Tetrode ·Tetrode-Tetrode

QQE0640

Internally neutralized double tetrode designed for HF amplification, oscillation, frequency multiplication, and modulation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B7A
Base pins
-
Nominal heater
6.3 V / 1.8 A

Description

Internally neutralized double tetrode for HF amplifier, oscillator, multiplier and modulator service.

Socket description

Septar 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7A
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
1.8 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

2 physical sections, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
600 V
Max screen voltage
300 V

Identical repeated sections compressed to one row. Internally neutralized double tetrode for HF amplifier, oscillator, multiplier and modulator service.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
600 V
Max screen voltage
300 V

Second identical physical RF tetrode section; added to align rows with SectionCount.

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 Philips Electron Tubes Handbook V4

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • If

    900 mA

    | If 1.8 0.9 A

  • (m) (tic/s) Va W

    0 V

    Modulator operation | (m) (tic/s) Va W0 Va Po

  • above

    150 MHz

    Cooling | above 150 Mc/s it may be necessary to direct a low

  • frequences superieures

    150 MHz

    Cooling | frequences superieures 150 Mc/s. i1 peut ctre neces-

  • als

    150 MHz

    Cooling | als 150 MHz benutzt wird. kann emn Luftstrom auf den

Capacitance

  • See page

    3.2 pF

    Capacitances | See page 2 for internal Ca = 3.2 pF Co = 2.1 pF

  • See page

    2.1 pF

    Capacitances | See page 2 for internal Ca = 3.2 pF Co = 2.1 pF

  • neutralisation (On. CO') C

    10.5 pF

    Capacitances | neutralisation (On. CO') C 1 = 10.5 pF

  • Voir page

    6.7 pF

    Capacitances | Voir page 2 pour neutra- Ci = 6.7 pF

  • Grid-to-plate capacitance

    0.09 pF

    Capacitances | lisation interne (CO.CO') Cag1 < 0.09 pF

  • siehe Seite

    0.035 pF

    Capacitances | siehe Seite 2 (CO. CO') C 1-CA < 0.035 pF

Other

  • Published electrical value

    4.5 mA/V

    Typical characteristics | 4.5 mA/V

  • Plate current

    30 mA

    Typical characteristics | Kenndaten (Ia= 30 mA) =

  • (m) Nc/s Va W

    0 V

    Class C telegraphy | (m) Nc/s Va W0 Va W0 Va Wo Va SYo

  • Temperature of bulb and anode seals max

    250 °C

    Cooling | Temperature of bulb and anode seals max. 250 °C

  • Pin-seal temperature

    180 °C

    Cooling | Temperature of bottom pin seals max. 180 °C

  • broches du fond max

    180 °C

    Cooling | broches du fond max. 180 °C

  • AnodenverschlUsse max

    250 °C

    Cooling | AnodenverschlUsse max. 250 °C

  • Temperatur der Bodenstiftverschlusse max

    180 °C

    Cooling | Temperatur der Bodenstiftverschlusse max. 180 °C

  • Plate voltage

    750 V

    Maximum ratings | Va = max. 750 V Va = max. 600 V

  • Plate voltage

    600 V

    Maximum ratings | Va = max. 750 V Va = max. 600 V

  • Wia = max

    60 W

    Maximum ratings | Wia = max. 2x60 W Wia = max. 2x50 W

  • Wia = max

    50 W

    Maximum ratings | Wia = max. 2x60 W Wia = max. 2x50 W

  • Plate current

    110 mA

    Maximum ratings | Ia = max. 2x110 mA

  • Screen-grid voltage

    300 V

    Maximum ratings | Vg2 = max. 300 V

  • Wg

    3.5 W

    Maximum ratings | Wg2 = max. 2x3.5 W

  • V

    175 V

    Maximum ratings | -V01 = max. 175 V

  • Control-grid current

    5 mA

    Maximum ratings | Ig1 = max. 2x5 mA

  • Vkf = max

    100 V

    Maximum ratings | Vkf = max. 100 V

  • Plate voltage

    500 V

    Maximum ratings | Va = 600 750 520 500 V

  • Screen-grid voltage

    250 V

    Maximum ratings | Vg2 = 250 250 250 250 V

  • Plate current

    100 mA

    Maximum ratings | Ia = 2x100 2x80 2x100 2x100 mA

  • Control-grid current

    3 mA

    Maximum ratings | Ig1 = 2x2.5 2x1.5 2x2.8 2x3 mA

  • Screen-grid current

    20 mA

    Maximum ratings | Ig2 = 16 17 18 20 mA

  • Wia

    50 W

    Maximum ratings | Wia = 2x60 2x60 2x52 2x50 W

  • Plate voltage

    750 V

    Maximum ratings | Va = max. 750V Va = max. 600V

  • Plate voltage

    600 V

    Maximum ratings | Va = max. 750V Va = max. 600V

  • Wia = max

    60 W

    Maximum ratings | Wia = max. 2x75 'A Via = max.2x60 W

  • Plate voltage

    22.5 W

    Maximum ratings | Va = max.2x22.5 W

  • Plate current

    120 mA

    Maximum ratings | Ia = max. 2x120 mA

  • Screen-grid voltage

    4 W

    Maximum ratings | Vg2 = max. 2x4 W

  • Vi = max

    175 V

    Maximum ratings | -Vi = max. 175 V

  • f

    250 MHz

    Maximum ratings | f = 250 Mc/s

  • Plate voltage

    750 V

    Maximum ratings | Va = 750V

  • Control-grid voltage

    80 V

    Maximum ratings | Vg1 = ..80V

  • Screen-grid voltage

    250 V

    Maximum ratings | Vg2 = 250V

  • Plate current

    90 mA

    Maximum ratings | Ia = 2x90 mA

  • Control-grid current

    1.7 mA

    Maximum ratings | Ig1 = 2x1.7 mA

  • Screen-grid current

    14 mA

    Maximum ratings | Ig2 = 14 mA

  • Vglg

    260 V

    Maximum ratings | Vglg1'p = 260 V

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Katode : Oxyd Ve 6,3

    12.6 v

    Modulator

  • I 1,8

    900 mA

    Modulator

  • Va = max, [1]

    750 V

  • Va = max, [2]

    600 V

  • Wia = max, 2x6 [1]

    0 W

  • Wia = max, 2x6 [2]

    0 W

  • Wa = nax, %

    20 W

  • Ia = max, 2x1

    10 mA

  • Vg2 = max

    300 V

  • Wg2 = nmax. 2x3,

    5 W

  • Vz1 = max,

    175 V

  • f = 200 250 430

    500 Mc/s

  • Va = 600 750 520

    500 V

  • Vg2 = 250 250 250

    250 V

  • Ia = 2x100 2x80 2x100 2x1

    0 mA

  • Ig2 = 16 17 18

    20 ma

  • Wg2 = 4 4,25 4,5

    5 W

  • Wia = 2x60 2x60 2x52 2x5

    0 W

  • Wa = 2x15 2x17,% 2x19 2x2

    0 W

  • Wo = 90 85 66

    60 W

  • Va = waX [1]

    750 V

  • Va = waX [2]

    600 V

  • Wia = max. 2x75 & Wia = max.2zx6

    0 W

  • Wa = max,2x2

    2.5 W

  • Vg2 = max.,

    300 V

Capacitance

  • See page 2 {or %nternal) Ca

    342 PF

    PushPull

  • Voir page 2 pour neutra- C8 [1]

    10.5 pF

    PushPull

  • Voir page 2 pour neutra- C8 [2]

    6.7 pF

    PushPull

  • safiion igterne (CniCn') Cagn

    < 0.09 pF

    PushPull

  • siehe Seite 2 (Cp, Cn') Cag1-Cn

    < 0.035 pF

    PushPull

  • Xenndaten (Io [1]

    30 ma

    PushPull

  • Xenndaten (Io [2]

    4.5 mA

    PushPull

  • 0,6 500 | 500

    6 C

    PushPull

  • atode ;s Oxyad Ve 6,3

    12.6 v

    PushPull

  • Ir 1,8

    900 mA

    PushPull

  • See page 2 for %nternal\ Cy [1]

    3.2 pF

    PushPull

  • See page 2 for %nternal\ Cy [2]

    2.1 pF

    PushPull

  • Voir page 2 pour neutra- C&! [1]

    10.5 pF

    PushPull

  • Voir page 2 pour neutra- C&! [2]

    6.7 pF

    PushPull

  • lisation interne (Cp,Cpn') Cagd

    < 0.09 pF

    PushPull

  • siche Seite 2 (Cp, Cp') ve€)Cn ¢

    0.035 pF

Characteristic

  • Kenndaten (To [1]

    30 mA

  • Kenndaten (To [2]

    4.5 mA

  • 0,6 500|500

    6 C

  • above

    150 Mc/s

  • fréquences superleures a

    150 Mc/s

  • als

    150 MHz

  • Temperature of bulb and anode seals max

    250 °C

  • fréquences sur)cmoures a

    150 Mc/s

  • scellements des sorties d'anode max

    250 °C