All EML tubes, data for use in tube testers.

Last Update:

Description

this data table is extracted from our test data, gathered over a long time. This data is for testing, and not necesarily a recommended operating point in audio equipment.

 

Dynamic data, such as Gm and Ri, must be collected at fixed Ia.

Any measurement with fixed Ug should not be used to compare Gm or Ri against the datasheet.

Ug is specified for DC heated tube, with one end grounded, the other end positive DC.

Type
Uh
Ih
Ua
Ia
Gm
mA / V
Rp
-Ug needed for this Ia
AD1M
4
1.5
250
60
6
750
38...52
AD1M- UX4
4
1.5
250
60
6
750
38...52
PX4-M-UX4
4
1.6
250
48
5.6
708
30...38
PX25-UX4
4
2
400
62.5
7.6
1265
23...31
2A3-S
2.5
2.5
250
60
5.5
800
40...49
2A3-Mesh
2.5
2.5
250
60
5.2
800
40...49
45
2.5
1.5
250
34
1.6
1750
44...56
45B
2.5
1.5
250
34
1.6
1750
44...56
45M
2.5
1.5
250
34
1.6
1750
44...56
50
7.5
1.25
400
55
2.1
1800
64...76
300B
5
1.3
300
56
5.6
700
55...67
300B 2.5
2.5
2.5
300
56
5.6
700
55...67
300M
5
5
300
56
5.6
700
55...67
300M 2.5
2.5
2.5
300
56
5.6
700
55...67
300B-XLS
5
1.4
495
100
6.2
630
98...107
320B-XLS
5
1.7
495
100
6.2
630
98...107
520B-V2
6.5
1.5
495
120
7.6
520
97...109
520B-V3
5
2
495
120
7.6
520
97...109
520B-V4
5
2
495
120
7.6
520
97...109
1605
5
2.1
495
140
10
770
61...70
1605-V4
5
2.1
495
140
10
770
61...70