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HL210

Sensibly equivalent to:
AR4 CV1303 CV3500 PM1HF
See also:
Mazda 2 Volt Range Advert - Mazda HL2 Advert
    
Extras ▼

 

This Mazda HL210 has curved cuts in the base pins and etched lettering on the dome.
The HL210 is a general purpose battery triode with a two volt filament.
The lettering is difficult to see but is all present.
The balloon envelope is 45 mm in diameter and, excluding the B4 base pins, is 90 mm tall.
References: Data-sheet. Type HL210 was first introduced in 1929.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
ra
gm
2.0
0.1
150
28k
0.5
PDF scanned from an original document held by the museum
Updated June 08, 2020.
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