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6AK5

Sensibly equivalent to:
403A 5654 6069 6AK5W 6F32V 731A CV850 DP61 EF95 M8100 PM05
See also:
Mullard EF95 Advert - Mullard EF95 Advert - Mullard EF95 Advert
    
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The EF95/6AK5 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.
The American Type designation 6AK5 was the industry standard name and here Mullard acknowledge this by the use of both the American and Philips-Mullard European Type designations on the glass.
See also 5654 special quality version of the 6AK5.
Within the box shaped anode can be seen the grid structure. It is hard to see the control grid as it is made of very fine wire and close in to the cathode.
The thin glass tube envelope is 18 mm in diameter and excluding the B7G base pins, is 37 mm tall.
References: Datasheet & 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 14, 2017.
shape:thin.glass.tube construction:all.glass type:pentode age:1950.1960 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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