|
|
|
|
 |
|
Double triode
|
|
Introduced in 1954
|
|
Heaters can also be connected for 6.3V, 350mA
operation. |
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
base |
| ai |
gi |
ki |
f |
f |
a |
g |
k |
fc |
B9A |
|
Vf |
Af |
Va |
Vg |
mAa |
ra |
gm |
Pdiss |
|
12.6 |
0.15 |
250 |
-2 |
1.2 |
62,500 |
1.6 |
1 |
| Equivalent |
12AX7,
5751, 6681, 7025,
B339,
CV492, CV4004,
CV4110, ECC803,
ECC803S,
M8137 |
|
|
|
