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LN309

Sensibly equivalent to:
CV5144 PCL83
See also:
Osram B309, N309, LN309, U329 & 6901A Advert - Osram Junior Amplifier - Valves for Junior amplifier Advert
    
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The LN309 is a television triode output pentode. It produces enough output power at 2.2 Watts for an average domestic room but was designed primarily for the frame timebase stage. It was first advertised in 1953.
In the envelope the two electrode systems are side by side.
Another M-OV sample in the collection shows a slightly different appearance.
This valve is badged with the Osram trade name.
The thin glass tube envelope is 20 mm in diameter and excluding the B9A base pins, is 47 mm tall.
References: Datasheet & 1040. Type LN309 was first introduced in 1953.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(t)
g1(t)
k(t)
h
h
a
k,g3
g2
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAs
ra
gm
Pdiss
Pout
12.6
0.3
170
170
-9.5,mAa_30
5
53k
5.5
5.4W
2.2W

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
ra
gm
250
-8.5
10.5
7700
2.2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 08, 2016.
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