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3A/167M

Sensibly equivalent to:
437A CV5112 EC20
See also:
3A/167M Advert
    
Extras ▼

 

STC describe the 3A/167M as a wide band repeater triode. It has a very high mutual conductance as is common with all specialist wide bandwidth valves.
The 3A/167M has found additional uses in top quality audio applications and especially as a cathode follower stage for matching a condenser microphone to a low impedance mixing desk input.
The maximum anode voltage is 350 Volts but typical operation would be with an anode voltage of 150 Volts and 40 mA anode current.
Profile of the anode, Also note the gold plated pins for long term low resistance connections.
End view of anode and mica supports.
The wide glass tube envelope is 28 mm in diameter, and excluding the B8B base pins is 36 mm tall.
References: Datasheet & 1040.

 

Pin Connections
B8B
1
2
3
4
5
6
7
8
h
ic
-
a
k
ic
g1
h

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
Pdiss
6.3
0.45
350
-
45.0
1,000
47
40
7W
PDF scanned from an original document held by the museum
Updated November 03, 2016.
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