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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
6AB4
6AB5


6AB7



6AC7




6AD4



6AD6

6AD8


6AE5
6AF3
6AF5
6AF6

6AF11



6AG5


6AG7
6AH6
6AJ5

6AJ7



6AK5



6AK7

6AK8




6AL5




6AM5

6AM6


6AM8



6AQ5





6AR6



6AS4



6AS6



6AS7G



6AS11



6AT6



6AU4GT
6AU5GT


6AU6



6AU7


6AU8



6AV5GT



6AV6





6AW6






6AW8








6AX4








6AX4GTA






6AX8







6AY3








6AY3A








6AY3B





6B6




6BA3





6BA5




6BA6







6BA8






6BA8A




6BC5





6BC8





6BD6


6BD11


6BE6



6BF6

6BF7


6BG7


6BH6




6BH8




6BJ3


6BJ6



6BK6



6BL7GT



6BL8



6BM5



6BQ5





6BQ6GT








6BQ7





6BR5
6BR7


6BR8




6BR8A




6BS3



6BS3A






6BS8






6BT6


6BU6


6BU8




6BU8A



6BW6

6BW7



6BX6



6BX7GT





6BX8





6BY6


6BY7


6BZ6





6BZ7








6BZ8





6C4


6C5



6C6



6CA5

6CB5


6CB5A





6CB6





6CD6G


6CE3



6CF6




6CG3

6CG6


6CG8


6CG8A

6CH6


6CH7
6CJ6


6CL6


6CQ4
6CQ6
6CS5

6CS6





6CU6




6CW4


6CW7
6CX7



6CX8




6CY5



6D6




6DA4





6DA4A

6664
6N5

6AC7
6AJ7
1853

6AB7
6AJ7
1852
6134

5637
5719
5719A
5898

6AF6

6DC8
6N8

6AF5
6BR3
6AE5
6AD6

6AS11
6BD11

6BC5
6CE5
6186

6AK7
6485
7755

6AB7
6AC7

1220
5654
6096
6968

6AG7

6T8
6T8A

6EB5
5726
6058
6097
6663
7631

6516

6064
7498

6HJ8

6AQ5A
6BM5
7HG5
6005
6095
6669

6098
6384
7756

6DM4
6DM4A
6DQ4
6DT4

5725
7752

6AS7GA
6AS7GT
6080
6520

6AF11
6BD11

6AV6
6BK6
6BT6
6066

6AU4GTA
6FW5

6AU6A
6BA6
6136
7543

7AU7

6AU8A
6AW8A
6BA8A
6BH8

6AV5GA
6FW5

6AT6
6BK6
6BT6
6066

6CB6
6CB6A
6CF6
6CD6
6DE6

6AW8A
6AU8
6AU8A
6BA8
6BA8A
6JV8
6KS8
6LF8

6AX4GTA
6AX4GTB
6AS4GT
6DA4
6DA4A
6DM4
6DQ4
6DT4

6AX4GTB
6DA4
6DA4A
6DM4
6DM4A
6DQ4
6DT4

6EA8
6GH8
6GH8A
6LM8
6U8
6U8A

6AY3A
6AY3B
6BA3
6BS3
6BS3A
6DW4
6DW4A
6DW4B

6AY3A
6AY3B
6BA3
6BS3
6BS3A
6DW4
6DW4A
6DW4B

6AY3A
6AY3B
6BA3
6BS3
6BS3A
6DW4
6DW4A
6DW4B

6Q7

6AY3
6AY3A
6AY3B
6BS3
6BS3A
6DW4
6DW4A
6DW4B

5638

6AU6
6AU6A
6BD6
6CG6
5749
6660
7496
7543

6BA8A
6AU8
6AU8A
6AW8
6AW8A
6BH8

6BA8
6AU8
6AU8A
6AW8
6AW8A
6BH8

6AG5
6CE5

6BQ7
6BQ7A
6BS8
6BX8
6BZ7
6BZ8
6HK8
X155

6BA6
6CG6

6AF11

6BY6
6CS6
5750
5915

6BU6

6BG7
6021

6BF7
6021

6661
7693

6AU8
6AU8A
6AW8
6AW8A
6BA8
6BA8A

6AX3

6BJ6A
6662
7694

6AT6
6AV6
6BT6

6BL7GTA
6BX7GT
6DN7

6EA8
6LN8
6U8
6U8A

6AQ5
6AQ5A

7189
7189A
7320

6BQ6GTA
6BQ6GTB
6BQ6GTB/6CU6
6CU6
6DQ6A
6DQ6B
6FH6
6GW6

6BQ7A
6BC8
6BS8
6BX8
6BZ7
6BZ8
6HK8
X155

6DA5
6059

6BR8A
6FV8
6FV8A
6JN8

6FV8
6FV8A
6JN8

6BS3A
6DW4
6DW4A
6DW4B

6BS3
6DW4
6DW4A
6DW4B

6BC8
6BQ7
6BQ7A
6BX8
6BZ7
6BZ8
6HK8
X155

6AT6
6AV6
6BK6

6BF6

6BU8A
6GS8
6HS8
6KF8

6BU8
6GS8
6HS8
6KF8

6061

6BX6
6EL7

6BW7
6BY7
6EL7

6BL7GT
6BL7GTA
6DN7

6BC8
6BQ7
6BQ7A
6BS8
6BZ7
6BZ8
6HK8
X155

6BE6
6CS6

6BX6

6DC6
6HQ6
6JH6

6BC8
6BQ7
6BQ7A
6BS8
6BX8
6BZ8
6HK8
X155

6BC8
6BQ7
6BQ7A
6BS8
6BX8
6BZ7
6HK8
X155

6100
EC90

6J5
6L5

77
1221
1223
7700

6EH5

6CB5A
6CL5

6CL5

6CB6A
6AW6
6CF6
6DC6
6DE6
6DK6
6HQ6
6676
7732

6DN6
6EX6

6CD3

6AW6
6CB6
6CB6A
6DC6
6DE6
6DK6

6CD3

6BA6
6BD6

6CG8A
6FG7

6FG7

6132
7499

6CX7
6DR6

6197
6297
6677

6DE4
6065
6DW5

6BE6
6BY6

6BQ6GTB
6BQ6GTB/6CU6
6DQ6
6DQ6A
6DQ6B
6FH6
6GW6

6DS4
7895

6CF7
6CH7

6EB8
6GN8
6HF8
6JA8
6JE8

6EA5
6EV5
7717
8113

78

6DA4A
6AX4GTA
6AX4GTB
6DM4
6DM4A
6DQ4
6DT4

6DM4A
6DQ4
6DT4
6DA5
6DB6




6DC6




6DC8


6DE4




6DE6




6DE7
6DG6GT
6DJ8




6DK6





6DM4



6DM4A


6DN6


6DQ4


6DQ6




6DQ6A


6DQ6B
6DR6

6DR7


6DS4


6EA5

6EA7


6EA8


6EB5


6EB8



6EH5
6EH7
6EJ7

6EL7


6EM7


6ES6


6ES8

6ET6


6EV5
6EW6
6EX6
6F4
6F7
6FC7

6FD6


6FD7
6FH5

6FH6


6FQ5


6FQ5A


6FR7
6FS5

6FV8


6FV8A


6FW8


6G5


6GE8

6G5


6GF5


6GH8



6GH8A


6GJ7


6GK5


6GL7


6GM6



6GN8




6GS8



6GW6

6GW8

6GX6


6GX7

6GY6



6H5



6HA5




6HF8



6HG5
6HJ8


6HK5





6HK8





6HL8


6HM5


6HM6


6HQ5




6HQ6




6HS8



6HT6

6HZ6


6J4

6J5



6J6




6J7




6JA8




6JE8



6JF6

6JH6


6JK6


6JL6


6JN8



6JS6


6JS6A




6JT8




6JV8



6JW8
6K4

6K7


6K11



6KD8




6KF8



6KM6


6KR8





6KS8





6KV8



6L4

6L5







6L6







6L7



6LB8




6LF8




6LM8


6LN8


6LY8



6N3

6N5


6N8


6Q7


6R8


6SA7


6SD7
6SE7

6SG7


6SH7


6SJ7
6SK7
6SL7


6SN7


6SQ7
6SU7


6T5


6T8







6U4GT







6U5



6U7




6U8




6U8A






6V6









6W4GT












6W4GTA






6W6



6X4



6X5


6X8
6Z3
6BR5
6954

6AW6
6BZ6
6CB6
6CB6A
6CF6
6DE6
6DK6

6AD8
6N8

6CQ4

6AW6
6CB6
6CB6A
6CF6
6DC6
6DK6
6HQ6

6EW7
6W6GT
6ES8

6CB6
6CB6A
6CF6
6DC6
6DE6
6HQ6
8136

6DM4A
6DA4A
6DQ4
6DT4

6DT4

6CD6G
6CD6GA
6EX6

6DT4

6DQ6A
6DQ6B
6FH6
6GW6

6DQ6B
6FH6
6GW6

6GW6
6CJ6

6FD7
6FR7

6CW4
7895

6EV5

6EM7
6GL7

6LN8
6U8A

6AL5

6CX8
6GN8
6HF8
6JE8

6CA5
6EJ7
6EH7

6BW7
6BX6

6EA7
6GL7

6ET6
6FD6

6DJ8

6ES6
6FD6

6EA5
6GM6
6CD6GA
6L4
6F7S
6CW7

6ES6
6ET6

6FR7
6ES5

6DQ6B
6GW6

6FQ5A
6GK5

6FQ5
6GK5

6FD7
6FG5

6FV8A
6BR8A

6FV8
6BR8A

6KN8

6H5
6T5
6U5

7734

6T5
6U5

6GE5

6GH8A
6EA8
6U8A

6GH8
6EA8
6U8A

6GX7


6FQ5
6FQ5A

6EA7
6EM7

6EW6

6CX8
6EB8
6HF8
6JA8
6JE8

6BU8
6BU8A
6HS8
6KF8

6DQ6B

ECL86

6GY6
6HZ6

6GJ7

6GX6
6HZ6

6G5
6T5
6U5

6HK5
6HM5
6HQ5

6CX8
6EB8
6GN8
6JA8
6JE8

6AQ5A
6AM8A

6HA5
6HM5
6HQ5

6BC8
6BQ7
6BQ7A
6BS8
6BX8
6BZ7
6BZ8
X155

6BL8

6HA5
6HK5
6HQ5

6HT6

6HA5
6HK5
6HM5

6BZ6
6CB6
6CB6A
6DE6
6JH6

6BU8
6BU8A
6GS8
6KF8

6HM6

6GX6
6GY6

8532

6C5
6L5

5964
6030
6099
6101

1233
1620
7000

6CX8
6EB8
6GN8
6JE8
6JT8

6EB8
6GN8
6HF8
6JA8

6KM6

6BZ6
6HQ6

6EW6
6JL6

6EW6
6JL6

6EW6
6JK6

6BR8A
6FV8
6FV8A

6JS6A
6KD6

6JA8
6KR8
6KV8
6LK8
6LY8

6AW8
6AW8A
6KS8
6LF8

6LX8
6778

6U7
5732

6Q11

6EA8
6GH8
6GH8A
6U8
6U8A

6BU8
6BU8A
6GS8
6HS8

6JF6

6JT8
6KV8
6LB8
6LY8

6AU8
6AU8A
6AW8
6AW8A
6JV8
6LF8

6JT8
6KR8
6LB8
6LY8

6F4

6C5
6J5

6L6G
6L6GA
6L6GAY
6L6B
6L6C
6L6T
6L6X
1622
5881
5932
7581
7581A

1612
1620

6JT8
6KR8
6KV8
6LY8

6AW8
6AW8A
6JV8
6KS8

6AX8
6GH8
6GH8A

6U8A

6JT8
6KR8
6KV8
6LB8

6U3

6N5G
6AB5

6AD8
6DC8

6B6
6118

6T8
6T8A

6SB7Y
5961

6SE7
6SD7

6SH7
6006

6SG7
6006

5693
6137
6113

6SN7GTA
6SN7GTB
5692

6SQ7
6188

6G5
6H5
6U5

6T8A
6AK8

6AS4GT
6AX4GT
6AX4GTA
6AX4GTB
6DA4
6DA4A
6DM4
6DM4A
6DQ4
6DT4
6W4GT
6W4GTA

6G5
6H5
6T5

6K7

6U8A
6EA8
6LN8
ECF82
1252
6678
7731

6EA8
6LN8

6V6G
6V6GT
6V6GTA
6V6GTX
6V6GTY
6V6GX
6V6GY
5871
7408

6W4GTA
6AS4GT
6AX4GT
6AX4GTA
6AX4GTB
6DA4
6DA4A
6DM4
6DM4A
6DQ4
6DT4
6U4GT

6AX4GT
6AX4GTA
6AX4GTB
6DA4
6DA4A
6DM4
6DM4A
6DQ4
6DT4
6U4GT

6W6GT
6DG6GT

6BX4
6063
6202

6X5GT
024
024A

6X8A
1V

Last update: 30 Jul. 2004