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Pen4VA

Sensibly equivalent to:
7A2 A70B AC/Pen APP4A CV1174 KT42 MKT4/7 MP/Pen N40 P4VA
See also:
Mullard AC Mains Valves - CV1174 short entry
    
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The exhibit in the Collingwood Museum was labelled Pen4BA but we suspect that it is, in fact, a Mullard Pen4VA on a B7 base cap.
The classic envelope is 45 mm in diameter and, excluding the B7 base pins, is 113 mm tall.
References: 4024 & 1043. Type Pen4VA was first introduced in 1933.

 

Pin Connections
B7
1
2
3
4
5
6
7
-
g1
g2
h
h
k,h3
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
rk
rl
Pout
D
4.0
1.35
250
250
-20
36
3.0
40,000
2.8
500
6,000
3.4W
10%
PDF scanned from an original document held by the museum
Updated April 07, 2015.
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