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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
5AR4



5AS4



5AU4






5AW4








5AX4







5BK7A




5BQ7A


5BR8

5BS8


5BZ7



5CG4


5CG8
5CM6


5DB4


5DH8
5DJ4
5EA8
5EW6
5FV8

5GH8


5GJ7
5GM6
5GX7

5JK6

GZ34

5AS4A
5DB4
5U4GB
5V3
5V3A

5V3
5V3A

5AS4
5AS4A
5AU4
5DB4
5R4G
5U4GA
5U4GB
5V3
5V3A

5AXR4
5AS4
5AS4A
5R4G
5T4
5U4GA
5U4GB
5V4

4BC8
4BQ7A
4BS8
4BX8
4BZ7
4BZ8

5BS8
5BZ7

5FV8

5BQ7A
5BZ7

5BQ7A
5BS8

5AR4
5V4
5Z4

5FG7
5CZ5

5AS4
5AS4A
5U4GB

5FV8
5DN4
5U8
5GM6
5BR8

5EA8
5U8

5GX7
5EW6
5GJ7

5EW6
5JL6
5JL6


5T4







5U4G









5U4GA






5U4GB




5U8

5V3


5V4






5W4





5X3







5Y3





5Z3




5Z4
5EW6
5JK6

5AR4
5R4

5U4GA
5U4GB
5AR4
5AS4
5AS4A
5AU4
5DB4
5R4
5T4
5V3
5931

5U4GB
5AS4
5AS4A
5AU4
5DB4
5R4
5V3

5AS4
5AS4A
5AU4
5DB4
5V3
5V3A

5EA8

5V3A
5AU4

5V4GA
5AR4
GZ32

5AR4
5CG4
5R4
5T4
5V4
5Y3
5Z4

13
80
83V
88

5AR4
5AX4
5CG4
5R4
5T4
5V4
5Z4
6087
6106

83
1275

5AR4
5CG4
5V4
6087
GZ30

Last update: 23 Mar. 2008