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Tube Interchangability Reference

The following should be direct substitutions. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. Tubes in the "Tube" column are directly replaceable with tubes in the "Replacement" column. The reverse will not necessarily be a correct replacement. Please report any errors.

Tube prefix selection

0 1 2 3 4 5 6 7 8 9 10 12 13-117 VT Numeric Letter


TubeReplacement TubeReplacement
B36

B65




B152





B309



CK574

CK1005


CK1013

D63



D77







D152




DA90


DAC32



DAF91


DAF92
DAF96
DCC90




DD6




DF62


DF91


DF92


DH63


DH77



DK91


DK92
DK96

DL35



DL92


DL93

DL94


DL95


DL98


DP61



DY86


DY87


E88CC
E180F


EAA91



EABC80


EAF42




EB91




EBC41

EBC90


EBC91
EBF80
EC80
EC81

EC90


EC91
EC92


ECC33




ECC81




ECC82




ECC83



ECC85
ECC88
ECC91
ECF80

ECF82


ECH42
ECH81
ECH83
ECL80
ECL83
EF41
EF80
EF85


EF86



EF89
EF91
EF92

12SN7

6SN7
ECC33

ECC81
12AT7
B309
6679
6201

ECC81
12AT7
6679
6201
B152

6281

0Y4
0Z4A

5517

6H6

DD6
6AL5
EB91
D152
6663
5726


6AL5
D77
DD6
EB91
6663
5726

1A3
ID13

HD14
1H5

1S5
ZD17
IFD9

1U5
1AH5
3A5

6AL5
D77
D152
5726
6663
EB91
EAA91

1AD4

1T4
W17
IF3

1L4
1F2

6Q7
6T7

6AT6
EBC90

1R5
X17
1C1

1AC6
1AB6

N14
1C5

3S4
N17
IP10

3A4

3V4
1P11

3Q4
N18

3B4

EF95
6AK5
PM05
5654

DY87
1S2A

1S2
DY86

6922
6688

6AL5
5726
EB91
6663

6AK8
6T8

6CT7

6AL5
DD6
D77
D152
5727
6663
EAA91

6CV7

6AT6
DH77

6AV6
6N8
6Q4
6R4

6C4
6135

6AQ4
6AB4

65W7
65N7
B65

12AT7
B152
B309
6679
6201

12AU7
6680
5814
6189

12AX7
5751
6681
12DT7

6AQ8
6DJ8
6J6
6BL8

6U8
6678

6CU7
6AJ8
6DS8
6AB8
6BM8
6CJ5
6BX6
6BY7

Z729
6267
EL84
6BQ5

6DA6
6AM6
6CQ6
EF93




EF94



EF95



EH90


EK90


EL34
EL36


EL37


EL38
EL41
EL81


EL84



EL85
EL86


EL90



EL91
EL95
EM80
EM81
EM84

EN91


EQ80
EY51
EY81
EY82
EY86
EZ35
EZ40
EZ80
EZ81


EZ90



G2


G84


GZ30
GZ32
GZ34
H63
HBC90
HBC91
HCH81

HD14


HF93
HF94
HK90
HL92
HL94


HM04


HY90
KR-1
KR-25
KT32
LA
L63
M7

N14



N17


N18



N727



PABC80
PCC84
PCC85
PCF80
PL36
PL81

PL1267



PM04




PM05



PY81

QE06140



U78



U147
UAF42
UCH81
UF41


V2M70



VR-75
VR90
VR105

VR150



W17



X17


XXB

XXD
XXFM
XXL




X155




Z63


Z729



Z2669


ZD17
6BA6
PM04
5749
6660

6AU6
6136

6AK5
5654
DP61
PM05

6CS7

6BE6
HM04
5750

6CA7
6CM5

5881
6L6
5932

6CN6
6CK5
6CJ6

6BQ5
6267
EF86
Z729

6BN5
6CW5

6AQ5
N727
6669
6005

6AM5
6DL5
6BR5
6DA5
6FG6

2D21
5727

6BE7
6X2
6R3
6N3
6S2
U147
6BT4
6V4
6CA4

6X4
U78
6202
V2M70

4S
2S

2Z2
684

5Z4
5V4
5AR4
6F5
12AT6
12AV6
12AJ7

DAC32
1H5

12BA6
12AU6
12BE6
50C5
30A5

EK90
6BE6
5750

35W4
1V
2A5
25L6
6A4
6J5
117L7

DL35
1C5

DL92
3S4
1P10

3Q4
DL95

6AQ5
EL90
6669
6005

9AK8
7AN7
9AQ8
9A8
25E5
21A6

0A4
1267

6BA6
EF93
57491
6660

DP61
EF95
6AK5
5654

17Z3

5933
807

6X4
EZ90
6202
V2M70

EZ35
12S7
19D8
12AC5

6X4
EZ90
6202
U78

0A3
0B3
0C3

0D3
150C3

DF91
1T4
1F3

DK91
1R5
1C1

3C6

12AF7
7X7
7A4

6BC8
6BQ7
6BQ7A
6BS8
6BX8
6BZ7
6BZ8

6J7

EL84
6BQ5
EF86
6267

3DG4

DAF91
1S5
1FD9

Last update: 23 Mar. 2008