INCH-POUND
MIL-PRF-1/1698D
7 May 2004
SUPERSEDING
MIL-PRF-1/1698C
2 May 2003
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, RADIATION COUNTER
TYPE 7301
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: Low sensitivity, self-quenching for detection of gamma radiation.
See figure 1.
Mounting position: Any.
W eight: 0.45 ounce (12.76 grams).
ABSOLUTE RATINGS:
Parameter:
Ebb
Rp
TA
Unit:
V dc
MegΩ
°C
Maximum:
725
---
+75
Minimum:
675
---
-40
Test conditions:
700
1.0
---
_______________________________________________________________________________________________
GENERAL:
Qualification - Required.
Marking - See 1/ 16/. Tubes sold under service-life guarantee shall be marked with contract number and with the number of
operating hours (500 hours minimum) guaranteed.
Service-life guarantee (MIL-PRF-1) - W ith qualifying activity approval manufacturer may provide service-life guarantee, in lieu of life
test. Guaranteed tube operating time shall be 500 hours minimum (see 16/).
Comments, suggestions or questions on this document should be addressed to Defense Supply Center Columbus,
ATTN: DSCC-VAT, P.O. Box 3990, Columbus, OH 43216-5000 or e-mailed to TubesFiberOptic@dla.mil. Since
contact information can change, you may want to verify the currency of this address information using the ASSIST
Online database at www.dodssp.daps.mil.
AMSC N/A
FSC 5960
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