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6AM5

Sensibly equivalent to:
16A 6P17 7D9 CV136 EL91 N144 N77 V887
    
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The 6AM5 is a miniature audio output pentode. In single ended configuration it will produce 1.4 Watts, enough for a small broadcast receiver.
If used in push pull an output of 4 Watts is possible, but this valve was not expected to be used for hi-fi and for a radiogram there would be sufficient space to specify a physically larger valve.
The side view reveals that the grid support rods are copper for good heat transfer. Output valves in the B7G base format ran very hot.
The thin glass tube envelope is 18 mm in diameter and excluding the B7G base pins, is 46 mm tall.
References: Datasheet & 1040. Type 6AM5 was first introduced in 1949.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
6.3
0.2
250
250
-13.8
16
2.4
130k
2.6
1.4W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 14, 2014.
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