▼ Menu

AF7

Sensibly equivalent to:
TF7 VAF7 WE34
    
Extras ▼

 

The AF7 is an HF pentode for small signal amplification.
The Triotron name on the gold coloured zinc loaded screening paint.
The the Ct8 side contact base.
Thanks to Mark Mallison for sending the images.
The wide glass tube envelope is  mm in diameter and, excluding the Ct8 base pins, is  mm tall.
Reference: Data-sheet. Type AF7 was first introduced in 1959. See also 1959 adverts.

 

Pin Connections
Ct8
1
2
3
4
5
6
7
8
tc
m
h
h
k
g3
nc
g2
a
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
4.0
0.65
250
100
-2.0
3.0
1.1
2M
2.1
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated July 29, 2023.
Return to Main Index