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PM254

Sensibly equivalent to:
CV1153 CV1154 NR16 NR16A
See also:
Mullard PM254 Box
    
Extras ▼

 

The Mullard PM254 is a directly heated low impedance triode. It was introduced in 1927 and an improved version was released in 1929.Mullard give details for the use of this triode for audio output service.
The lettering on the dome.
An attractive box to attract the consumer, made oversize to accommodate an inner protective cardboard sleeve.
The balloon envelope is 47 mm in diameter, and excluding the B4 base pins is 85 mm tall.
References: 1931 datasheet & 1043. Type PM254 was first introduced in 1927.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
4.0
0.2
200
0
-
2,150
3.0
6.5
Thanks to Andy Cowley for supplying the above PDF datasheet.
Updated December21, 2012.
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