6N8S

Russian medium-mu double triode designed for low-frequency voltage amplification, with a documented guaranteed service life of 2,000 hours.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: IO
Base pins: 8
Nominal heater: 6.3 V / 600 mA

Description

The 6H8C double triode is designed for ampli- JICHHSt HaNpSXKEeHHs] HU3KOH YacTOTHL fication of low-frequency voltage.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: IO
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 600 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

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.003 S
Amplification factor: 21.5
Max plate voltage: 330 V
Max plate dissipation: 2.75 W
Max cathode current: 20 mA

Bilingual Russian/English datasheet; English text used as primary extraction source.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.003 S
Amplification factor: 21.5
Max plate voltage: 330 V
Max plate dissipation: 2.75 W
Max cathode current: 20 mA

Second physical triode 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

195X Russian

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater voltage
6.3 V
Published nominal heater condition.
Heater current
600 mA
Published heater current.
Transconductance
2600 µS
Published characteristic; normalized to µS.
Amplification factor
20
Published characteristic.

Other

Maximum plate voltage
330 V
Published limiting operating value.
Maximum plate dissipation
2.75 W
Published limiting operating value.

Data set 02

1970 Russian Tubes Mashpriborintorg

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

U
63 V
Published datasheet line: U, 63V Uy -8V SN 3x1mA/V
I
600 mA
Published datasheet line: I, 600%% mA LY 9t mA pl 21,5%35
U
250 V
Published datasheet line: U, 250V
CgI x
3 pF
Published datasheet line: CgI x 3pF
Cak
1,2 pF
Published datasheet line: Cak 1,2 pF
Cgla
4 pF
Published datasheet line: Cgla 4 pF
U
69 V
Published datasheet line: U, 69V 57V
U
330 V
Published datasheet line: U, 330V
P
275 W
Published datasheet line: P, 275W
I
20 mA
Published datasheet line: I, 20 mA
Uy
100 V
Published datasheet line: Uy, 100V
Rgr
0,0 MQ
Published datasheet line: Rgr 0,0 MQ
PublishedValue
1 mA
Published datasheet line: 1‘150%/ [y mA lrp]*

Other

U
69 V
Published datasheet line: U, 69V 57V
U
330 V
Published datasheet line: U, 330V
P
275 W
Published datasheet line: P, 275W
I
20 mA
Published datasheet line: I, 20 mA
Uy
100 V
Published datasheet line: Uy, 100V
Rgr
0,0 MQ
Published datasheet line: Rgr 0,0 MQ
PublishedValue
1 mA
Published datasheet line: 1‘150%/ [y mA lrp]*
/ / y s
50 a
Published datasheet line: ; / / y s ;50 p Ay P a,“___
(
9 V
Published datasheet line: ({9, V-18 -76 14 -12 -10 -8 -6 -4 -2 0 50 100 150 200 Uy,

Data set 03

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Nominal heater voltage
6.3 V
Published source value
Nominal heater current
600 mA
Published source value
Transconductance
3000 uS
Published operating point
Amplification factor
21.5
Published operating point
Guaranteed service life
2000 h
Published source value