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L63

Sensibly equivalent to:
6C5 6J5G CV1067 CV1932 POVT154 VR67
See also:
The Williamson Amplifier - CV1067 short entry
    
Extras ▼

 

The L63 is an octal based amplifier triode. It is a low impedance device and although designed as a general purpose valve it is often used at audio frequencies.
The reverse has the Type designation of 6J5G and Admiralty Pattern W1528A clearly indicating that this was supplied to the UK Navy.
The dome with the fingers of the mica holding the electrodes firmly to the inside of the glass. The cathode is a round tube and the grid supports can be seen.
The classic envelope is 38 mm in diameter and, excluding the IO base pins, is 85 mm tall.
References: Data-sheet & 1040. Type L63 was first introduced in 1938.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a
-
g1
-
h
k

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.3
250
-8
9
7,700
2.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated August 27, 2020.
shape:classic construction:pinch type:triode age:1930.1940 base:io heater:6.3v pins:8 pin:1.m pin:2.h pin:3.a pin:4.- pin:5.g1 pin:6.- pin:7.h pin:8.k
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