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Voltage Pentode ·Pentode

12Z3L

Russian pentode designed for reliable operation under ambient influences, with a manufacturer service-life guarantee of 3,000 hours. Published data describe a signal-amplifier pentode with conventional voltage-amplification operating characteristics.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B8G
Base pins
8
Nominal heater
12.6 V / 74 mA

Description

12Z3L: Pentode vacuum tube from bilingual English/Russian source.

Socket description

Loctal 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B8G
Base pins
8
Nominal heater voltage
12.6 V
Nominal heater current
74 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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.00171 S
Max plate voltage
250 V
Max screen voltage
225 V
Max plate dissipation
2 W
Max screen dissipation
0.7 W
Max cathode current
11 mA

English-primary bilingual extraction; published electrical table values 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

195X Russian

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Source symbol BO

    3 A

    [Mentomm 12)K3JI ycTOWUHBE K BO3ALHCTBHIO The 12)K3J1 pentodes are resistant to ambient

  • Source symbol aroseunocts

    3000 W

    TapautupoBanHasa poaroseunocts 3000 wacos. Service life guarantee: 3000 hr.

  • Service life

    3000 h

    TapautupoBanHasa poaroseunocts 3000 wacos. Service life guarantee: 3000 hr.

  • Source symbol U,

    126 V

    U, 126V Uy O S 1,710 mA/V

  • Source symbol S

    1.71 mA/V

    U, 126V Uy O S 1,710 mA/V

  • Source symbol T

    74±4 mA

    I, T74x4mA I, 23%himA R;Y) =09 MQ

  • Published electrical parameter

    9 MΩ

    I, T74x4mA I, 23%himA R;Y) =09 MQ

  • Source symbol U,

    150 V

    U, 150V I,) <100 pA R,Y) =05 MQ

  • Published electrical parameter

    <100 pA

    U, 150V I,) <100 pA R,Y) =05 MQ

  • Published electrical parameter

    5 MΩ

    U, 150V I,) <100 pA R,Y) =05 MQ

  • Source symbol Uy,

    75 V

    Uy, 75V I, 055035 mA Regy?) 45 kQ

  • Source symbol I,

    55035 mA

    Uy, 75V I, 055035 mA Regy?) 45 kQ

  • Published electrical parameter

    45 kΩ

    Uy, 75V I, 055035 mA Regy?) 45 kQ

  • Published electrical parameter

    21 V

    Uy, —21V P2 =>05W U® <150 mV

  • Published electrical parameter

    >05 W

    Uy, —21V P2 =>05W U® <150 mV

  • Published electrical parameter

    250 V

    2 ) I1IR e 100, U, =U,p =250 V, Uy oy =28 V, Rgy=20 kQ, Ry =500 Q.

  • Published electrical parameter

    28 V

    2 ) I1IR e 100, U, =U,p =250 V, Uy oy =28 V, Rgy=20 kQ, Ry =500 Q.

  • Published electrical parameter

    20 kΩ

    2 ) I1IR e 100, U, =U,p =250 V, Uy oy =28 V, Rgy=20 kQ, Ry =500 Q.

  • Published electrical parameter

    500 Ω

    2 ) I1IR e 100, U, =U,p =250 V, Uy oy =28 V, Rgy=20 kQ, Ry =500 Q.

  • Source symbol Hast

    809 A

    3y Hast 809 aami.

  • Published electrical parameter

    2 mA

    ) IPH § — 2 maA,

  • Source symbol Cgrc

    3703 pF

    Cgrc 3703 pF Cgla << 0,007 pF

  • Published electrical parameter

    <0.007 pF

    Cgrc 3703 pF Cgla << 0,007 pF

  • Source symbol Chc

    402035 pF

    Chc 402035 pF Ca-k < 0,007 pF

  • Source symbol k

    <0.007 pF

    Chc 402035 pF Ca-k < 0,007 pF

  • Source symbol I

    77 mA

    I 77 mA 74 mA P, 2W

  • Source symbol mA

    74 mA

    I 77 mA 74 mA P, 2W

  • Source symbol P,

    2 W

    I 77 mA 74 mA P, 2W

  • Source symbol U,

    250 V

    U, 250 V Pgp 07 W

  • Source symbol Pgp

    7 W

    U, 250 V Pgp 07 W

  • Source symbol U,

    300 V

    U, 300V I I1 mA

  • Source symbol I

    1 mA

    U, 300V I I1 mA

  • Source symbol Ug2

    225 V

    Ug2 225 V Uy, 250V

  • Source symbol Uy,

    250 V

    Ug2 225 V Uy, 250V

  • Source symbol y

    300 V

    Ug2 1)y 300V

  • Source symbol Uy

    0 V

    Uy -0V ARSy

  • Published electrical parameter

    6 A

    6 A 4

  • Published electrical parameter

    4-1.5 V

    4 -1,5V— \

  • Published electrical parameter

    -3 V

    -3V -

  • Published electrical parameter

    128 V

    U,=128V —_, U, =126V

  • Published electrical parameter

    126 V

    U,=128V —_, U, =126V

  • Published electrical parameter

    75 V

    Uy, =75V - — —1, U, =150V

  • Published electrical parameter

    150 V

    Uy, =75V - — —1, U, =150V

  • Published electrical parameter

    3 A

    13 3ax. 738 193

  • Source symbol o

    5 V

    \N\N vgr-av-o5v]-1v -15v -2v |-2.5V -3V 35V -41 I / S

  • Published electrical parameter

    -1 V

    \N\N vgr-av-o5v]-1v -15v -2v |-2.5V -3V 35V -41 I / S

  • Source symbol v

    -15 V

    \N\N vgr-av-o5v]-1v -15v -2v |-2.5V -3V 35V -41 I / S

  • Source symbol v

    -2 V

    \N\N vgr-av-o5v]-1v -15v -2v |-2.5V -3V 35V -41 I / S

  • Published electrical parameter

    -2.5 V

    \N\N vgr-av-o5v]-1v -15v -2v |-2.5V -3V 35V -41 I / S

  • Source symbol V

    -3 V

    \N\N vgr-av-o5v]-1v -15v -2v |-2.5V -3V 35V -41 I / S

  • Source symbol V

    35 V

    \N\N vgr-av-o5v]-1v -15v -2v |-2.5V -3V 35V -41 I / S

  • Published electrical parameter

    2 W

    2 WD A T/17 1A 1/ 7

  • Published electrical parameter

    1 A

    2 WD A T/17 1A 1/ 7

  • Source symbol w

    4 A

    = w4 A

  • Published electrical parameter

    200 µA

    0 &0 100 150 200 Ua.V 0 100 200 U,V