INCH-POUND
MIL-PRF-1/878G
27 March 2012
SUPERSEDING
MIL-PRF-1/878F
7 January 2000
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, POWER
TYPE 250TH *
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: Triode.
See figure 1.
Weight: 10 ounces nominal (283.5 grams).
Mounting position: Vertical.
ABSOLUTE RATINGS: C Telegraphy.
Parameter:
F
Ef
Eb
Ec
Ib
Ic
Pp
Unit:
MHz
V
kV dc
V dc
mA dc
mA dc
W
Maximum:
40
5.25
3.0
-210
330
75.0
250
Minimum:
---
4.75
---
---
---
---
---
Test conditions:
---
5.0 V ac
2.5
Adjust
100
---
---
See footnotes at end of table I.
________________________________________________________________________________________________
GENERAL:
Qualification: Not required.
Holding period: (MIL-STD-1311): 1/
This specification sheet uses accept on zero defect sampling in accordance with MIL-PRF-1, table III.
_________
* Tube type 250TL has been deleted from this tube specification sheet. Use EIA Type 250TL.
AMSC N/A
FSC 5960
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