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P220

Sensibly equivalent to:
AR5 CV3620
See also:
H210, HL210, L210 & P220 Advert
    
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The P220 is a battery audio output triode. The load impedance is 10 kΩ and the output is 160 mW.
The pinch and electrodes. The filament is oxide coated and a single inverted V.
The dome and etched identification.
The balloon envelope is 42 mm in diameter, and excluding the B4 base pins is 93 mm tall.
References: Datasheet, 1040 & 1043. Type P220 was first introduced in 1929.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
2.0
0.2
150
-13.5
7.6
4,000
1.75
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 04, 2013.
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