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ECL83

Sensibly equivalent to:
P633
    
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The ECL83 is another audio triode pentode designed for single ended audio application such as TV audio and record players. With an anode load of 7500 Ohms this valve delivers its modest 2.5 Watts. This in the 1960s was the standard output for low cost audio products.
The thin glass tube envelope is 20 mm in diameter and excluding the B9A base pins it is 47 mm tall. Quite short compared to the ECL82 and ECL86.
References: Datasheet & 1040. Type ECL83 was first introduced in 1957.

 

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
mAa
mAs
ra
gm
Pout
D
6.3
0.6
200
200
-1.3
27
4
65k
5
2.5W
10%

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
ra
gm
200
-1.5
2.5
34k
2.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 22, 2013.
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