INCH POUND
MIL-PRF-1/343C
16 July 1998
SUPERSEDING
MIL-E-1/343B
4 February 1972
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, RECEIVING
TYPES 3Q4 AND 3V4
This specification is approved for use by all Depart-
ments and Agencies of the Department of Defense.
The requirements for acquiring the electron tubes described herein
shall consist of this document and the latest issue of MIL-PRF-1.
DESCRIPTION:
Power amplifier pentode.
Outline
- - - 5-2 (EIA)
Base
- - - E7-1
Envelope - - - T5-1/2
Cathode - - - Coated filament
Base connections:
Pin no. Element
1
2
3
4
5
6
7
3Q4
-f (+prl)
a
g1
g2
fct g3 (-prl)
a
+f
3V4
-f (+prl)
a
g2
nc
fct g3 (-prl)
g1
+f
ABSOLUTE-MAXIMUM RATINGS:
Parameter:
Ef
Eb
Ec1
Ec2
Ik
Unit:
V dc
V dc
V dc
V dc
mA dc
Maximum:
1.6 or 3.2
100
100
13
(prl) (ser)
Minimum:
1.2 or 2.4
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(prl) (ser)
Test conditions:
1.4 (prl)
90
-4.5
90
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____________________________________________________________________________________________________
GENERAL:
Qualification - Not required.
AMSC N/A
1 of 3
FSC 5960
DISTRIBUTION STATEMENT A. Approved for pubic release; distribution is unlimited.
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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