|
|
|
5-pin
base |
7-pin base |
Pentode
Introduced in
1934 (7-pin base: 1935)
1 |
2 |
3 |
4 |
5 |
tc |
base |
f |
g2 |
f |
g1 |
k |
a |
B5 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
tc |
base |
m |
g1 |
g3 |
f |
f |
k |
g2 |
a |
B7 |
|
Vf |
Af |
Va |
Vs |
Vg |
mAa |
mAs |
Ri |
gm |
5-pin |
4 |
1.1 |
200 |
100 |
-2 |
3 |
1.5 |
2,000,000 |
2.5 |
7-pin |
4 |
1.1 |
200 |
100 |
-2 |
3 |
1.5 |
2,200,000 |
2.3 |
|