MIL-DTL-25516F
TABLE V. Low signal level contact resistance.
Circuit (class A)
Milliohms maximum
Initial
After
conditioning
Inner contact
9
11
Outer contact
5
6
3.6.5 Contact engagement and separation forces. When tested in accordance with 4.7.6, the force
required to insert and withdraw the specified pin shall be initially 18 ounces maximum and 0.7 ounce
minimum. After conditioning, the maximum engagement force shall be 22 ounces and minimum
separation force shall be 0.6 ounce.
3.6.6 Resistance to test probe damage. The socket contacts shall meet the contact resistance
requirements after testing in accordance with 4.7.7. The entrance to the socket contact shall be designed
to reject the entrance to a NO-GO test pin which is 0.044 ± .001 inch maximum diameter.
3.6.7 Contact retention. In unmated but assembled connectors, the contacts shall withstand an axial
load of 10 pounds when tested in accordance with 4.7.8. Maximum allowable axial displacement of the
contact after this test shall not exceed 0.010 inch.
3.6 8 Durability. It shall be possible to mate and unmate the connectors without deleterious effect on
the mechanical or electrical performance when tested in accordance with 4.7.9.
3.6.9 Cable retention force (except classes H and Y). When properly attached to the applicable cable,
the connector shall withstand a pull force of 30 pounds or 90 percent, whichever is less, of the breaking
strength of the cable when tested in accordance with 4.7.10.
3.6.10 Side load (except classes H and Y). There shall be no evidence of bending or breaking of any
part of the connector when tested in accordance with 4.7.11.
3.6.11 Hermetic sealing (except class G). Connectors which are designed with glass-to-metal seals, for
hermetic sealing applications, shall not leak in excess of 1x10-5 cc/second of helium at a pressure
differential of one atmosphere when tested in accordance with 4.7.12.
3.6.12 Thermal shock. Connectors shall withstand the shock or repeated surface exposures to
extremes of high and low temperatures without affecting the mechanical or electrical characteristics when
tested in accordance with 4.7.13.
3.6.13 Shock. Connectors shall withstand a 50g shock load when tested in accordance with 4.7.14
without interruption of signal for more than 10 microseconds. In addition, they shall sustain the shock load
without impairing mechanical or electrical performance.
3.6.14 Vibration. When tested in accordance with 4.7.15, connectors shall not crack, nor break, and
there shall be no loosening of parts. Connectors shall be in full engagement during vibration and the
coupling device shall not loosen as a result of vibration. Interruptions of electrical continuity shall not last
longer than 10 microseconds.
3.6.15 High temperature. After testing in accordance with 4.7.16, mated connectors shall have an
insulation resistance of 2,000 megohms. Contact resistance shall be in accordance with table IV.
10
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