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6GW8

Sensibly equivalent to:
CV8297 ECL86
See also:
A Low Cost Amplifier
    
Extras ▼

 

This 6GW8 was made in Germany for the American re-seller International Servicemaster. Uses were in domestic radio and audio equipment. Normally in single ended output stages for radiograms and tape recorders. The design proved popular in low cost stereo systems and was made by several companies, the Philips / Mullard name is the ECL86.
The bold lettering is the word International with Servicemaster below. The single triode is effectively half of the ECC83 design.
The pentode section. The beam plates can be seen inside the anode. The grid support visible is for the screen grid. Another pentode made as a beam tetrode.
The thin glass tube envelope is 21 mm in diameter and, excluding the B9A base pins, is 70 mm tall.
References: Datasheet, 1040 & private communication. Type 6GW8 was first introduced in 1961.

 

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

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.7
250
-1.9
1.2
62k
1.6

 

Absolute Maximum Operating Conditions
Pentode
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
250
250
-7
36
6
48k
10
4W
10%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 26, 2016.
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