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MIL-PRF-49465 Resistor, Fixed, Metal Element, Power Type, Very Low Resistance Values, General Specification ForThis specification covers the general requirements for power type, low value \(1 ohm and below\), fixed resistors \(2 terminal and 4 terminal\) for use in electrical, electronic, communications, and associated equipment. Included are precision resistors of ??1 percent, ??3 percent, and ??5 percent initial resistance tolerances with power ratings ranging from 3 watts to 5 watts at +25 degrees C derated to 0 power at +275 degrees C.

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MIL-PRF-49465C
TABLE V. Qualification inspection.
Number of
Number of
Requirement
Method
sample units
failures
Inspection
Paragraph
paragraph
1/
allowed
Group I
Visual and mechanical inspection 2/
3.1, 3.3 to 3.4.1.3 inclusive,
All samples
3.24 to 3.27 inclusive
80
DC resistance 3/
Group II 4/
Solderability
6
Resistance to solvents
8
Group III 4/
Thermal shock
1
Resistance temperature characteristic
Low temperature storage
20
Short time overload
(10 highest
Dielectric withstanding voltage
10 lowest)
Insulation resistance
Moisture resistance
Terminal strength
Group IV 4/
20
Shock (specified pulse)
(10 highest
Vibration, high frequency
10 lowest)
Group V (unenclosed) 4/ 5/
4
Visual and mechanical inspection
(2 highest
0
as applicable
2 lowest)
Group VI 4/
20
Life
(10 highest
1
10 lowest)
Group VII 4/
20
High temperature exposure
(10 highest
1
10 lowest)
Group VIII 4/
0
Fungus
10
1/ See appendix.
2/ Marking shall be considered defective only if illegible or missing. Marking shall remain legible at the end of all tests.
3/ Tests shall not be performed if a manufacturer presents certified data proving tests have been performed on the
qualification sample.
4/ Items subjected to group II through VIII inclusive, must meet requirements of group I.
5/ Unenclosed sample units shall be subjected to visual and mechanical inspection in accordance with group I only.
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