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VP22

 
    
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This VP22 from Mazda has lost its outer metalisation. This interestingly reveals a label affixed to the glass envelope.
The VP22 is a directly heated battery variable-mu pentode and features the Mazda Octal base. The MO base was established as a rival to the American International Octal base.
The classic envelope is 31 mm in diameter, and excluding the MO base pins, is 83 mm tall.
References: Datasheet, 1040 & 1043. Type VP22 was first introduced in 1938.

 

Pin Connections
MO
1
2
3
4
5
6
7
8
tc
f
-
a
g2
g3
m
-
f
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
2.0
0.1
120
60
-1.5
1.2
0.32
1.3M
0.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 02, 2013.
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