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HF tetrode
Introduced in 1927
| 1 |
2 |
3 |
4 |
tc |
base |
| g2 |
f |
f |
g1 |
a |
B4 |
| Vf |
Af |
Va |
Vs |
Vg |
mAa |
mAs |
ra |
gm |
| 4 |
0.1 |
200 |
100 |
-1 |
4.5 |
0.8 |
400,000 |
0.9 |
B442 serie 100 is for
series feed
| Equivalent |
1915, A2004, C150,
DZ2,
H410D,
L409, PM13X, R81, RES024, RES094, RO4142,
S406, S410,
TB42, VH300 |
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