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6Z7

 
See also:
Quiescent Push-Pull
    
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The 6Z7 is an unusual double triode. It is designed as a Class B push pull audio amplifier. It operates from low anode voltages as found in universal mains sets and delivers a respectable power of 4 Watts. Rl is 12,000 Ω.
The internal structure is obscured by the internal metalising. What can be seen are two anode cylinders of about 6 mm diameter. These are formed of sheet metal and are carbonized.
The classic envelope is 37 mm in diameter and, excluding the IO base pins, is 85 mm tall.
References: Datasheet & 1043. Type 6Z7 was first introduced in 1938.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a(2)
g1(2)
g1(1)
a(1)
h
k

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
Pout
6.3
0.3
180
0
8.4
4.2W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 29, 2013.
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