|
Triode / heptode FC
Introduced in 1936 (AC/TH1A 1938, base octal))
1 |
2 |
3 |
4 |
5 |
6 |
7 |
tc |
base |
a(t) |
g(t),g3 |
g2,g4 |
f |
f |
m,k |
a(h) |
g1 |
B7 |
|
Vf |
Af |
Va |
Vs |
Vg |
mAa |
mAs |
ra |
gm |
heptode |
4 |
1.3 |
250 |
100 |
-3 |
3 |
6 |
1,600,000 |
0.75 |
triode |
|
|
80 |
|
|
4* |
|
3,000 |
5.3 |
*) AC/TH1A: 4.5
Equivalent |
4THA, 20A1,
41STH, AS4125, CV2830, MM4V, TH4A/B, TH4B,
X41 |
|