INCH-POUND
MIL-PRF-1/1405E
27 July 2009
_
SUPERSEDING
MIL-PRF-1/1405D
18 June 1999
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, TRAVELING WAVE
TYPE 7640
This specification is approved for use by all Departments
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: Forward-wave amplifier, frequency range 2.9 to 3.1 GHz, power output 1 kW, periodic permanent magnet focus,
air cooled, coaxial rf connectors.
ABSOLUTE RATINGS: 2/
Parameter:
Ef
If (surge)
ek
ik
ia + iw
VSWR
Unit:
V
A
v
a
ma
---
Maximum:
8.5
10
-8,000
2.0
1,000
2.0:1.0
Minimum:
6.0
---
---
---
---
---
ABSOLUTE RATINGS: 2/
Parameter:
Pp
Du
tp
Pi(rf)
tk
TE
s 3/
C 4/
Unit:
W
---
W 9/
sec
Maximum:
100
0.006
6.0
2
---
150
Minimum:
---
---
---
---
120
---
PHYSICAL CHARACTERISTICS:
Dimensions:
See figure 1.
DC connectors:
See figure 1.
Mounting position:
Any.
Focusing circuit:
PPM, integral.
Cooling:
2 cfm minimum air through base.
Weight:
17.5 pounds, maximum.
See 6/ and 7/
RF connectors:
See figure 1.
Marking:
TEST CONDITIONS:
Parameter:
Ef
Du
ek
tp
Pi (rf)
F
Frequency
s
Unit:
V
---
v
W
GHz
F
GHz
Test condition 1:
6.3
0.0055
Adj
5.5
0.001
F1, F2, F3
1
2.9
2%
Test condition 2:
6.3
0.0055
Adj
5.5
1.0
F1, F2, F3
2
3.0
2%
Test condition 3:
6.3
0.0055
Adj
5.5
1.0
F2
3
3.1
2%
See footnotes at end of table I.
____________________________________________________________________________________________
GENERAL:
Qualification: Not required.
Burn-in: 25 hours 17/
Service-life guarantee: 16/
AMSC N/A
FSC 5960
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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