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PM202

Sensibly equivalent to:
220SP CV185 P220A P2
See also:
1931 Advert - CV185 short entry
    
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The PM202 is a battery output triode, described by Mullard as a 'super power' output valve. With an anode load of 4,500 Ohms the valve can deliver 0.3 Watts.
This is an early version with a balloon envelope and it matches the shape of the 1931 advert. Our other PM202 has the classic or shouldered envelope.
The dome carries the etched identification.
Although not easy to see the anode box is mounted horizontally.
The balloon envelope is 45 mm in diameter and, excluding the B4 base pins, is 89 mm tall.
References: Datasheet, 1040 & 1043. Type PM202 was first introduced in 1931.

 

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
0.3
150
-10
19
2150
3.5
Thanks to Andy Cowley for supplying the above PDF datasheet.
Updated October 22, 2015.
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