The USA tubes and their Soviet analogues
Marking
Type
Filament
Typical mode of operation
The basic parameters
Pp max.
Watt
Analogue
Uh
V
Ih
A
Up
V
Ugl
V
Ug2
V
Ip
mA
S
mA/V
μ
Ri
kOhm
1AD5
RF pentode
1.25
0.04
67.5
-6
67.5
1.85
0.735
-
700
 
 
1G4
Triode
1.4
0.05
90
-6
-
2.3
0.8
8.8
10.7
 
 
1G6
Double triode
1.4
0.1
90
0
-
1.0
0.82
33
40
 
 
1N5
RF pentode
1.4
0.05
90
-4
90
1.2
0.75
 
1500
 
 
1T5
Beam tetrode
1.4
0.05
90
-6
90
6.5
1.15
 
250
 
 
1U4
RF pentode
1.4
0.05
90
-4
90
1.6
0.9
 
1000
 
 
1V5
Pentode
1.25
0.04
67.5
-4.5
67.5
2.0
0.75
 
150
 
 
2A3
Power triode
2.5
2.5
250
-45
-
60
5.25
4.2
0.8
15
2С4С
2C50
Double triode
12.6
0.3
300
-24
-
12.5
1.75
9.5
 
 
 
2C51
Double triode
6.3
0.3
150
-2
-
9.8
5.5
 
 
1.5
6НЗП
2C53
High-voltage triode
6.3
0.3
4000
-5
-
2.5
0.95
500
 
 
 
6A3
Power triode
6.3
1.0
250
-45
-
60
5.25
4.2
0.8
 
6С4С
6A5
Power triode
6.3
1.25
250
-45
-
60
5.25
4.2
0.3
15
6С4С
6AB4
Triode
6.3
0.15
250
-2
-
10
5.5
60
10.9
2.5
 
6AC7
RF pentode
6.3
0.4
300
-2
300
10
9
 
1000
3.0
6Ж4
6AG5
RF pentode
6.3
0.3
250
-1.5
150
6.5
5
 
800
2.0
6ЖЗП
6AG7
Power pentode
6.3
0.65
300
-3
150
30
11
 
130
10
6П9
6AH6
RF pentode
6.3
0.45
300
-2
150
10
9
 
500
 
 
6AK5
RF pentode
6.3
0.175
180
-2
120
7.7
5.4
 
500
1.7
6Ж1П
6AL5
Double diode
6.3
0.3
117
-
-
9
-
-
-
 
6Х2П
6AQ5
Beam tetrode
6.3
0.45
250
-12.5
250
45
4.1
 
52
12
6П1П
6AQ6
Diode-Triode
6.3
0.15
250
-3
-
1.0
1.2
70
58
 
6Г7
6AS6
Pentode
6.3
0.175
120
-2
120
5.2
3.2
 
110
1.7
6Ж2П
6AS7
Double triode
6.3
 
135
-30
-
125
7
2
0.25
13
6Н5С
6AU6
RF pentode
6.3
0.3
250
-1
150
10.6
5.2
 
1000
3.0
6Ж4П
6B4G
Power triode
6.3
1
250
-45
-
60
5.25
4.2
0.8
 
6С4С
6BA6
RF pentode
6.3
0.3
250
-1/
-20
100
11
4.4
 
1500
3.0
6К4П
6BE6
Pentagrid
6.3
0.3
250
 
100
2.3
0.475
 
1000
1
6A7
6А2П
6BF5
Beam tetrode
6.3
1.2
ПО
-7.5
110
36
7.5
 
12
5.5
 
6BG6
Transmitting tetrode
6.3
0.9
400
 
400
70
6
 
 
20
6П7С
6C4
Triode
6.3
0.15
250
-8.5
-
10.5
2.2
17
7.7
3.5
 
6C5
Triode
6.3
0.3
250
-8
-
8
2.0
20
10
 
6С5С
6CB6
RF pentode
6.3
0.3
200
-2
150
2.5
6.2
 
600
2.0
 
6CL6
Power pentode
6.3
0.65
250
-3
150
30
11
 
150
7.5
6П9
6F6
Power pentode
6.3
0.7
285
-20
285
38
2.6
 
78
11
 
6F7
Triode-pentode
6.3
0.3
250
250
-3
-3
100
6.5
3.5
1.1
0.5
8
850
16
 
 
6F8G
Double triode
6.3
0.3
250
-8
-
10
2.6
20
7.7
2.5
6Н8С
6F12
RF pentode
6.3
0.3
250
-2
250
10
7.5
 
 
2.5
 
6F33
Pentode
6.3
0.3
250
 
250
 
4.3
 
 
2.5
 
6H6
Double diode
6.3
0.3
150
-
-
8
-
-
-
 
6Х6С
6J5
Triode
6.3
0.3
250
-8
-
9
2.6
20
7.7
2.5
6С2С
6J6
Double triode
6.3
0.45
150
-10
-
8.5
5.3
38
7.1
1.5
6Н15П
6K4
Triode
6.3
0.3
200
 
-
11.5
3.45
16
4.65
3
6СЗБ
6K6
Power pentode
6.3
0.4
250
-18
250
32
2.3
 
90
8.5
 
6L6
Beam tetrode
6.3
0.9
250
-14
250
72
6
 
22.5
19
6ПЗС
6L7
Pentagrid
6.3
0.3
250
-3/
-15
100
5.3
1.1
 
600
1.5
6П7
6N7
Double triode
6.3
0.8
250
-3
-
7
3.2
35
 
6
6Н7С
6S4
Triode
6.3
0.6
250
-8
-
26
4.5
16
3.5
7.5
 
6SC7
Double triode
6.3
0.3
250
-2
-
2
1.3
70
53
 
 
6SF5
Triode
6.3
0.3
250
-2
-
0.9
1.5
100
66
 
 
6SJ7
RF pentode
6.3
0.3
250
-3
100
3.0
1.65
 
1000
3.0
6Ж8
6SK7
RF pentode
6.3
0.3
250
-3/
-35
100
9.2
2.0
 
800
4.0
6К3
6К9С
6SL7
Double triode
6.3
0.3
250
-2
-
2.3
1.6
70
44
1.0
6Н9С
6SN7
Double triode
6.3
0.6
250
-8
-
9
2.6
20
7.7
3.5
6Н8С
6SR7
Diode-Triode
6.3
0.3
250
-9
-
9.5
1.9
16
8.5
2.5
6Г1
6U8
Triode-pentode
6.3
0.45
250
150
-7
-10
100
-
10
18.5
5.2
8.5
40
400
5
2.8
2.7
 
6Y6GT
Beam tetrode
6.3
0.45
250
-12.5
250
45
4.1
 
50
 
6П6С
6Y6
Beam tetrode
6.3
1.25
200
-14
135
6.1
7.1
 
18.3
12.5
 
7A5
Beam tetrode
6.3
0.75
125
-9
125
44
6
 
17
5.5
 
7C5
Beam tetrode
6.3
0.45
250
-12.5
250
45
4.1
 
52
12
 
7E6
Diode-Triode
6.3
0.3
250
-9
-
9.5
1.9
16
8.5
 
6Г1
7G7
RF pentode
6.3
0.45
250
-2
100
6
4.5
 
800
1.5
 
7N7
Double triode
6.3
0.6
250
-8
-
9
2.6
20
7.7
2.5
 
12AU6
RF pentode
12.6
0.15
250
-1
150
10.6
5.2
 
1000
3
6Ж4П
12AU7
Double triode
12.6
0.15
250
-8.5
-
10.5
2.2
17
7.7
 
 
12AX7
Double triode
12.6
0.15
250
-2
-
1.2
1.6
100
62.5
1.0
6Н2П
12BA6
RF pentode
12.6
0.15
250
-1/
-20
100
11
4.4
 
1500
3
6К4П
12BE6
Hexode
12.6
0.15
250
 
100
2.9
0.47
 
1000
1.0
 
12BH7
Double triode
12.6
0.3
250
-10
-
11.5
3.1
16.5
5.3
3.5
 
12SL7
Double triode
12.6
0.15
250
-2
-
2.3
1.6
70
4.4
1.0
6Н9С
12SN7
Double triode
12.6
0.3
250
-8
-
10
2.6
20
7.7
3.5
6Н8С
12SR7
Diode-Triode
12.6
0.5
250
-9
-
9.5
1.9
16
8.5
2.5
12Г1
25L6
Beam tetrode
25
0.3
200
-8
110
50
9.5
 
30
10
 
26A6
RF pentode
26.5
0.07
250
-2
-25
100
10.5
4
 
1000
3.0
 
26A7
Double beam tetrode
26.5
0.6
26.5
-4.5
26.5
19
5.7
 
2.5
 
 
45
Triode
2.5
1.5
250
-50
-
34
2.2
3.5
1.6
 
 
50L6
Beam tetrode
50
0.15
200
-8
110
50
9.5
 
30
10
 
57
RF pentode
2.5
1.0
250
-3
100
2
1.2
 
1000
 
 
300A
Power triode
5
1.2
300
-65
-
40
4.9
3.8
0.8
40
 
304TH
Transmitting triode
5
25
3000
 
-
900
16.7
20
 
300
 
403B
RF pentode
6.3
0.15
180
 
120
7.7
5.1
 
500
1.7
 
450TL
Transmitting triode
7.5
12
6000
-900
-
600
6.65
38
 
450
 
807
Beam tetrode
6.3
0.9
500
-14.5
200
50
5.7
 
39
30
 
815
Double beam tetrode
12.6
0.8
500
-17.5
225
150
4.0
 
 
25
 
829B
Double beam tetrode
12.6
1.125
750
-17.5
250
240
8.5
 
 
40
2x ГУ-29
954
RF pentode
6.3
0.15
250
-3
100
2
1.4
 
1000
 
6Ж14
959
RF pentode
1.25
0.05
135
-3
67.5
1.7
0.6
 
800
 
6ДЗД
1603
RF pentode
6.3
0.3
250
-3
100
2
1.2
 
1500
 
 
1614
Beam tetrode
6.3
0.9
550
-125
400
110
6
 
 
25
 
1620
RF pentode
6.3
0.3
250
-3
100
2
1.2
 
1000
 
 
1622
Beam tetrode
6.3
0.9
300
-20
250
86
 
 
 
14
 
5654
Pentode
6.3
0.175
180
 
120
7.7
5.1
 
500
 
6Ж1П
5670
Double triode
6.3
0.35
150
-8
-
8.2
5.5
35
 
1.5
6НЗП
5687
Double triode
12.6
0.45
250
- 12.5
-
12.5
5.5
16.5
3
4.2
 
5691
Double triode
6.3
0.6
250
-2
-
2.3
1.6
70
4.4
1.0
6Н9С
5692
Double triode
6.3
0.6
250
-9
-
6.5
2.2
20
9.1
1.75
6Н8С
5693
Pentode
6.3
0.3
250
-3
100
3.0
1.65
 
1000
3.0
6Ж8
5719
Triode
6.3
0.15
150
 
-
1.85
2.3
70
30
 
 
5751
Double triode
6.3
0.35
250
-3
-
1
1.2
70
58
0.8
 
5814
Double triode
12.6
0.175
250
- 8.5
-
10.5
2.2
17
7.3
2.7
 
5881
Beam tetrode
6.3
0.9
250
-18
250
53
5.2
 
48
23
6П3С-Е
5963
Double triode
12.6
0.15
 
 
 
 
2.8
22
7.8
2.5
6Н8С
5964
Double triode
6.3
0.45
 
 
 
 
6
39
6.5
1.5
 
6005
Beam tetrode
6.3
0.45
250
-12.5
250
45
4.1
 
52
12
6П1П
9001
RF pentode
6.3
0.15
250
-3
100
2
1.4
 
1000
 
 
9006
Diode
6.3
0.15
300
 
 
3
 
 
 
 
 
CK525AX
Pentode
1.25
2
22.5
- 1.2
22.5
0.25
0.32
 
 
 
 
CK571
Triode
1.25
0.01
10.5
-3
-
0.2
 
 
 
 
 
CK5702
Pentode
6.3
0.2
120
-2
120
7.5
5
 
 
 
6Ж1Б
EF36
RF pentode
6.3
0.25
250
-2
100
3
1.8
 
2500
2
6Ж4
EF37A
RF pentode
6.3
0.25
250
-2
100
3
1.8
 
2500
2
6Ж4
EF42
RF pentode
6.3
0.36
250
-2
250
10
9
 
500
3.5
 
EF91
RF pentode
6.3
0.3
250
-2
250
10
7.6
 
1000
2.5
 
EL33
Power pentode
6.3
0.9
250
-6
250
36
9
 
50
9
 
EL37
Power pentode
6.3
1.4
250
13.5
250
100
11
 
13.5
25