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30L15

Sensibly equivalent to:
7EK7 B349 PCC805
See also:
Valves and their Habits - Ediswan 30L15 Advert - TV RF stage design - TV Mixer Stage Design
    
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The 30L15 is a low impedance high gain double triode. The low voltage high current suggests a low noise design, used in the front end stages in a television tuner.
The other 30L15 in the museum has a different construction. This one has a perforated outer screen as well as an inter-section screening plate.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 47 mm tall.
References: Datasheet & 1040. Type 30L15 was first introduced in 1960.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
k(2)
g1(2)s
a(2)
h
h
g1(1)
k(1)in
k(1)out
a(1)

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
7
0.3
90
-1.2
15
3100
9
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 06, 2016.
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