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25L6

Sensibly equivalent to:
CV552
    
Extras ▼
The 25L6 is an audio output valve. Introduced in 1936 in the all metal format by RCA. The 300 mA heater is designed for series heater chains in sets without a mains transformer.
Reference: Data-sheet. Type 25L6 was first introduced in 1937. See also 1937 adverts.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g1
nc
h
k

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
rk
rl
Pout
D
25.0
0.3
200
125
-8.7
46.0
2.2
28,000
8.0
180
3,000
3.8W
10%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 09, 2022.
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