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Pen383

Sensibly equivalent to:
CV1456
See also:
Mazda Pen45 & Pen383 Advert
    
Extras ▼

 

The Pen383 is a beam tetrode audio output valve on a Mazda Octal base that was designed for receivers operating without an isolating mains transformer. The design was released in 1938 with other valves to build superhet receivers. The Pen383 could produce just under three Watts of audio.
The identification is located on the top of the valve. The control grid has heat radiating fins at the top. The bright rod across the top is the cathode connection. The suppressor grid also connects to this cross bar.
The classic envelope is 54 mm in diameter, and excluding the MO base pins is 103 mm tall.
References: datasheet & 1043 Type Pen383 was first introduced in 1938.

 

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

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
38
0.2
200
200
-8.7
50.0
10.0
12.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 26, 2018.
shape:classic construction:pinch type:beam.tetrode age:1930.1940 base:mo heater:200ma pins:8 pin:1.h pin:2.k pin:3.a pin:4.g2 pin:5.g1 pin:6.m pin:7.- pin:8.h
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