INCH-POUND
MIL-PRF-1/1702C
2 May 2003
SUPERSEDING
MIL-PRF-1/1702B
17 April 1998
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, NEGATIVE GRID (MICROW AVE)
TYPE 8745
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: UHF triode: conduction, convection, and forced-air cooled, ceramic and metal.
See figure 1.
Mounting position: Any.
ABSOLUTE RATINGS:
Parameter:
F1
Ef
Eb
epy
Ec
Ib
ib
ic
tp
Du
Unit:
MHz
V 1/
V dc
kv
V dc
mA dc
a 2/
a
---
µs
Maximum:
---
4.5
-150
---
1.5
0.7
250
0.005
Anode pulsed
3,000
6.0
Osc. or Amp.
±5 percent
3,500
---
-150
---
1.5
0.7
250
0.005
Grid pulsed
3,000
6.0
Osc. or Amp.
±5 percent
Test conditions:
---
6.0
1,000
---
Adj.
100
---
---
---
---
ABSOLUTE RATINGS:
Parameter:
Pp
Pg
tk
TE
T
Cooling
Anode shank
4/ 5/
Unit:
W
W 3/
s
°C 4/
°C 4/
(min)
Maximum:
Anode pulsed
100
2.0
60
250
250
---
Osc. or Amp.
Grid pulsed
100
2.0
60
250
250
---
Osc. or Amp.
Test conditions:
---
----
300
---
---
6/
_____________________________________________________________________________________
GENERAL:
Qualification: Required.
AMSC N/A
1 of 10
FSC 5960
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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