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EL3

 
See also:
Mullard Red 'E' Series Advert - Mullard EF8, ECH2, EBC3, EF9, EB4, EL3 & AZ3 Advert
    
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The EL3 is an audio output pentode, but the ratings given by Mullard are for a triode. The second set of ratings is from Tungsram for the valve in pentode service.
We also have a Mullard EL3 with a more distinctly shouldered envelope.
The classic envelope is 33 mm in diameter and, including the Ct8 base pins is 110 mm tall.
References: Datasheet, 1040 & 1043. Type EL3 was first introduced in 1938.

 

Pin Connections
Ct8
1
2
3
4
5
6
7
8
-
h
h
k
-
g1
g2
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
Pout
6.3
0.9
250
-8.5
20
3,000
6.5
1.1W

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
6.3
0.9
250
250
-7
36
4.5
9.5
4.5W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 29, 2013.
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