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HL2

Sensibly equivalent to:
210HF CV1673 HLB1 PM2HL
See also:
Mazda HL2 Advert
    
Extras ▼

 

The HL2 is a general purpose triode but the Mazda advert for this metalised valve suggests that it is well suited for use as a leaky grid detector of first audio voltage amplifier.
The reference number.
The balloon envelope is 42 mm in diameter, and excluding the B4 base pins is 85 mm tall.
References: Datasheet, 1040 & 1043. Type HL2 was first introduced in 1931.

 

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
150
-2
2.0
24,000
1.35
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 11, 2013.
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