MIL-PRF-29504/5D
Temperature life. The high exposure temperature shall be 165oC +5°C, -0°C. Mated connector
assemblies shall be tested in accordance with TIA/EIA-455-4 for the duration of 1,000 hours at the high
exposure temperature. The change in optical transmittance shall be measured after the test. The
termini shall be visually examined after the test to the extent feasible inside the connector. Termini
shall not be damaged, and there shall be no loosening of parts, separation of bonded surfaces or other
damage detrimental to the operation of the termini. The requirement for the change in optical
transmittance shall be met after the test. Performance of a cable/fiber retention test is not required as
part of the final inspection for this test.
Insertion loss verification: If the cut back method is used after the mechanical or environmental tests
are concluded, then the return loss may be performed prior to the insertion loss verification.
Qualification connector: The qualification connector for this termini shall be a qualified MIL-DTL-38999
connector.
Qualification by similarity.
a.
Qualification of termini for single mode fiber sizes.
(1)
Qualification inspection shall be performed on termini with a ferrule hole diameter of 126
microns when termini with both 125 (or 125.5) and the 126 micron ferrule hole diameters
are offered. Manufacturers who qualify under this specification sheet for the 126 micron
ferrule hole diameter are qualified under this specification sheet for the 125 or 125.5
micron ferrule diameter. Qualification inspection shall be performed on the 5.8/125
micron fiber size.
(2)
Constraint for qualification by similarity case listed above. This qualification by similarity
case is valid if the only difference between the qualified termini (single mode 126 micron)
and the smaller size termini is a change in the terminus ferrule hole diameter and TICC
markings.
b.
Qualification of termini for multimode fiber sizes.
(1)
Complete qualification inspection shall be performed on termini with optical fiber having a
cladding diameter of 125 microns. Termini shall have a ferrule hole diameter of 126 +1, -
0 microns. Manufacturers who qualify under this specification sheet for the terminus with
the 126 +1, -0 micron ferrule hole diameter are qualified under this specification sheet for
the other 125 cladding hole diameters for use with multimode fiber sizes. Manufacturers
who qualify under this specification sheet for the terminus with the 126 +1, -0 micron
ferrule hole diameter are qualified under this specification sheet for the other (in this
case, polyimide) hole diameters for use with multimode 50/125 or 62.5/125 micron fiber
sizes.
(2)
100/140 fiber size. Manufacturers who qualify under this specification sheet for the
termini with the multimode, 50/125 or 62.5/125 micron fiber size and pass the insertion
loss and size inspections are qualified under this specification sheet for the 100/140
micron fiber size. Qualification inspection for the 100/140 micron fiber size shall be
performed on termini with a ferrule hole diameter of 173 +3, -0 microns to cover the case
for terminations of termini onto polyimide coated fiber. Manufacturers who qualify under
this specification sheet for the terminus with the 173 +3, -0 micron ferrule hole diameter
are qualified under this specification sheet for the other 100/140 hole diameters for use
with multimode fiber sizes (both non-polyimide and polyimide).
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