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|
Thermion 4-pin 2-443
with side contact |
|
Output pentode
Introduced in 1927
In order to avoid Philips
patents used in the B443, in this tube the suppressor grid and
the control grid are connected.
| 1 |
2 |
3 |
4 |
5/sc |
base |
| f |
a |
f |
g1 |
g2 |
B4/B5 |
| Vf |
Af |
Va |
Vs |
Vg |
mAa |
mAs |
Ra |
gm |
Pout |
Pdiss |
| 4 |
0.15 |
250 |
150 |
-19 |
12 |
2.4 |
45,000 |
1.3 |
1.35 |
3 |
| Equivalent |
410PT,
B443,
D100, D100N,
DX3, L415D, L506, M1004, PM24,
PP415,
R79, RES174,
RO4243,
TB43, TU415, W443 |
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