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CV358

Sensibly equivalent to:
5A/157D CV5080 EF37A OM5B
See also:
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The CV358 is high impedance screened pentode designed for intermediate frequency amplifier use the prototype was the EF37. The high anode AC resistance suggests the use of high Q tuned circuits.
The EF37 and the low hum version EF37A were much used for top quality audio pre-amplifier applications.
The reverse is plain zinc paint.
The wide glass tube envelope is 29 mm in diameter and, excluding the IO base pins, is 86 mm tall.
References: Data-sheet & 1040.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g3
nc
h
k

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.2
250
100
-2
3
0.8
2.5M
1.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 03, 2022.
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