The 4-THA is a triode hexode frequency changer. The triode is employed as the local oscillator and the hexode for the mixing process, the input signal being coupled to the control grid via the top cap for maximum separation of the circuits.
The classic envelope is 44 mm in diameter and, excluding the B7 base pins, is 117 mm tall.
Pin Connections
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
tc |
|
a(t) |
gt,g3 |
g2,g4 |
h |
h |
m,k |
a |
g1 |
Absolute Maximum Operating Conditions
|
Vh |
Ah |
Va |
Vs |
Vg |
mAa |
mAs |
gm |
|
4.0 |
1.5 |
250 |
100 |
-2 |
3.5 |
5.5 |
0.85 |
|
Va |
mAa |
|
100 |
1.5 |
This exhibit was last updated on 21 October 2001 |
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