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1LN5

Sensibly equivalent to:
CV781
    
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The 1LN5 is a dry battery screened pentode. It was used as an RF and IF amplifier in AM broadcast radio receivers. It is of the fixed μ type and so not ideal for use in superhet receivers.
See 1AB5 for a higher μ version.
The carton is marked for both US Army and US Navy and made by Sylvania for Galvin Manufacturing Corporation, as contractor. The date on the carton for acceptance is December 1943.
The wide glass tube envelope is 28 mm in diameter and, excluding the B8B base pins, is 55 mm tall.
References: Datasheet. Type 1LN5 was first introduced in 1940.

 

Pin Connections
B8B
1
2
3
4
5
6
7
8
f+
a
g2
g3
f-
g1
-
f-

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
1.4
0.05
90
90
-0
1.6
0.35
1.1M
0.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 26, 2012.
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