articles
 
collections
 
timeline

3Q4


HMS Collingwood
equivalents
 
new
 
   


home
Sensibly equivalent to:- CV818 - DL95 - N18
 
 
 
This exhibit was last updated on 09 November 2013
Become a friend or
with PayPal.

The 3Q4 miniature dry battery pentode was designed for radio receiver use. The output of 0.27 Watt maximum would only drive a small efficient loudspeaker, not hi-fi.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 45 mm tall.
References: Datasheet, 3002 & 1040. Type 3Q4 was first introduced in 1950 .
 
Pin Connections
B7G
1
2
3
4
5
6
7
f-
a
g1
g2
fct,g3
a
f+
 
Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
1.4
0.1
90
90
-4.5
9.5
2.1
100,000
2.15
0.27
7%

Thanks to Frank Philipse for supplying the above PDF datasheet
More