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6AN8

 
    
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Type 6AN8 is a triode-pentode of American design introduced in 1954 for colour television receivers.
The pentode section is used as a video amplifier or reactance valve while the triode performs variously as a phase detector, gating valve, oscillator or phase splitter.
The triode is on the left. The 'pentode' is in fact a beam tetrode and the beam plate can be seen on the right where the anode is reduced in height to a strap.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.
References: Datasheet & Wireless World. Type 6AN8 was first introduced in 1954.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(t)
g1(t)
k(t)
h
h
a
g2
g1
k,s

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
mAa
mAs
ra
rk
gm
6.3
0.3
200
150
9.5
2.8
300k
180
6.2

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
ra
gm
μ
200
-6
13
5750
3.3
19
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December14, 2015.
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