INCH-POUND
MIL-PRF-1/1336G
9 July 2004
SUPERSEDING
MIL-PRF-1/1336F
26 July 1999
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, PULSE MODULATOR
TYPE 3D21W B
This specification is approved for use by all Depart-
ments and Agencies of the Department of Defense.
The requirements for acquiring the electron tube described herein
shall consist of this document and the latest issue of MIL-PRF-1.
DESCRIPTION: Beam tetrode, vacuum
Outline: See figure 1.
Cathode: Coated unipotential.
Base connections:````````
Pin No.
1
2
3
4
5
6
7
8
Cap
Element
hct
h
nc
g2
nc
g1
h
k
a
ABSOLUTE RATINGS:
Ic1
Ik
Pg1
Ehk
Ec2
Ec1
Eb
Ef
Parameter:
mA dc
mA dc
W
v
V dc
V dc
V dc
V
Unit:
Maximum:
13.9 or 6.9
4,000 1/
0
850
500
0.5
175
5.0
Minimum:
11.4 or 5.7
-200 2/
--- 3/
---
---
---
---
---
Test condition:
6.3
600
0
300
---
---
---
---
ABSOLUTE RATINGS:
Alt
TE
tk
ik
egk
Pg2
Pp
Parameter:
ft
sec
a
v
W
W
Unit:
°C
Maximum:
40
3.5
220
10
5/
---
300
Minimum:
---
---
---
--- 2/
--- 4/
---
30
Test condition:
---
---
---
---
---
---
---
See footnotes at end of table I.
GENERAL:
Qualification - Required.
AMSC N/A
FSC 5960
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