▼ Menu

PM2A

Sensibly equivalent to:
220PA CV3643 LP2 P220
See also:
1931 Advert - Mullard PM2A Box - Mullard PM12 PM1HL & PM2A Advert
    
Extras ▼

 

The PM2A is an early audio output valve. It is designed for battery operation and, naturally, the output power is very low. The anode load is quoted as optimum at 7,000 Ohms.
The balloon envelope is 44 mm in diameter and, excluding the B4 base pins, is 87 mm tall.
References: 1931 datasheet & 1043. Type PM2A 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
gm
Pout
2.0
0.2
135
-6
5.0
6000
2.0
0.15
Thanks to Andy Cowley for supplying the above PDF datasheet.
Updated April 22, 2014.
Return to Main Index