INCH-POUND
MIL-PRF-1/1647E
4 July 2014
SUPERSEDING
MIL-PRF-1/1647D
w/AMENDMENT 1
3 December 2007
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, RADIATION COUNTER
TYPE 8767
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 MIL-PRF-1.
DESCRIPTION:
Geiger - Mueller, very high beta sensitivity, very thin mica window frisker probe, low
background, halogen, self-quenching, ruggedized.
See figures 1, 2, 3, 4, and 5.
Mounting position: Any.
Weight: 6.5 ounces (184.3 grams) nominal.
ABSOLUTE RATINGS:
Parameter:
Ebb
TA
Rp
Window
(external resistance)
thickness
MegΩ
2
V dc
EC
mgs/cm
950
+55
---
2.0
Maximum:
850
-20
3.3
1.4
Minimum:
900
---
3.3
---
Test conditions:
GENERAL:
Qualification - Required.
This specification sheet uses accept on zero defect sampling in accordance with MIL-PRF-1, table III.
Marking - Each tube shall have an individual serial number which shall be legibly punched or engraved into the
cathode.
Holding period (MIL-STD-1311) - 720 hours
Packaging - Tubes shipped under Government contract must be packaged in hermetically sealed containers to
withstand low external pressure which might occur in air shipment.
Service-life guarantee (MIL-PRF-1) - 500 hours minimum operating time
AMSC N/A
FSC 5960
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business