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6AK5

Sensibly equivalent to:
403A 5654 6069 6AK5W 6F32V 731A CV850 DP61 EF95 M8100 PM05
See also:
Western Electric 6AK5 Box
    
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The 6AK5 is an amplifier pentode that is physically small and the electrode assembly is no more than a 10 mm cube. The use of this device lay in low noise RF amplification at VHF. See also 5654 special quality version of the 6AK5.
The flat face of the anode with side straps holding the two sides together.
Looking along the axis of the grids through the open end of the anode. All three wire grids can be seen with the suppressor grid a much more open pitch than the inner grids.
The thin glass tube envelope is 18 mm in diameter and excluding the B7G base pins, is 35 mm tall.
References: Datasheet, 3002 & 1040. Type 6AK5 was first introduced in 1942.

 

Pin Connections
B7G
1
2
3
4
5
6
7
g1
k
h
h
a
g2
k

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.175
180
120
-2
7.2
2.4
0.7M
5.1
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 21, 2018.
shape:thin.glass.tube construction:all.glass type:pentode age:1940.1950 base:b7g heater:6.3v pins:7 pin:1.g1 pin:2.k pin:3.h pin:4.h pin:5.a pin:6.g2 pin:7.k
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