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Double triode
Introduced in 1948
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
| a2 |
g2 |
k2 |
f |
f |
a1 |
g1 |
k1 |
hct |
Heaters can also be connected for 6.3V, 350mA operation.
| Vf |
Af |
Va |
Vg |
mAa |
ra |
gm |
Pdiss |
| 12.6 |
0.175 |
250 |
-3 |
1.2 |
58,000 |
1.2 |
0.8 |
| Equivalent |
12AD7, 12AX7, 12DF7, 12DT7, 12DM7, 5751,
6681, 7025, 7058, 7729,
B339,
CV492, CV4004, CV4110,
E83CC, ECC83,
M8137 |
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