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HR210

Sensibly equivalent to:
PM1HL
    
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The Tungsram HR210 is a battery triode and is equivalent to the Mullard PM1HL etc. These very popular valves were used as detectors.
Our other HL210 has a balloon envelope.
The classic envelope is 40 mm in diameter, and excluding the B4 base pins is 84 mm tall.
References: Datasheet & 1043. Type HR210 was first introduced in 1933.

 

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
135
-1.5
2.2
21,500
1.4
PDF scanned from an original document held by the museum
Updated February 09, 2013.
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