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P215

 
    
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The P215 is a directly heated triode. Tungsram made this valve in England.
The reverse is plain zinc loaded screening paint.
Reference: Data-sheet. Type P215 was first introduced in 1930.

 

Pin Connections
B4
1
2
3
4
a
g1
f-
f+

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
μ
2.0
0.2
150
-7.5
10.0
4,000
7.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated July 28, 2020.
shape:balloon construction:pinch type:triode age:1920.1930 base:b4 heater:2.0v pins:4 pin:1.a pin:2.g1 pin:3.f- pin:4.f+
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