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PM1HF

Sensibly equivalent to:
AR4 CV1303 HL210
See also:
The Azide Process - The Philips-Mullard (PM) Series - Mullard PM1HF Box - Mullard PM1HF Box
    
Extras ▼

 

This battery triode was designed in 1926 for the HF stages in broadcast receivers. The filament would be run from a 2.0 Volt accumulator.
The balloon envelope is 40 mm in diameter and, excluding the B4 base pins, is 82 mm tall.
References: 1931 datasheet & 1043. Type PM1HF was first introduced in 1926.

 

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
0.1
100
0
2.3
22.5k
0.8
Thanks to Andy Cowley for supplying the above PDF datasheet.
Updated December19, 2012.
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