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|  MIL-R-5757H
3.13 Vibration (see 4.6.11). Unless otherwise specified (see 3.1), there shall be no opening of closed
contacts in excess of 10 s and there shall be no closure or bridging of open contacts in excess of 1 s
and no evidence of mechanical or electrical damage.
3.14 Acceleration (unless otherwise specified, see 3.1) (see 4.6.12). The contacts of the relay shall
remain in the de-energized position with no voltage across the coil and in the energized position when
voltage is applied to the coil.
3.15 Terminal strength (see 4.6.13). There shall be no evidence of loosening or breaking of the
terminals, nor shall there be any other damage which would adversely affect the normal operation of the
relay. Bending of terminals shall not be construed as damage. The glass criteria of 3.28 does not apply
here.
3.16 Magnetic interference (when specified, see 3.1) (see 4.6.14). The specified pickup, dropout, and
hold values (voltages) shall meet the requirements specified in 3.10.2.
3.17 Contact sticking (when specified; see 3.1 and 4.6.15). When relays are tested as specified, the
release time shall be as specified in 3.1.
3.18 Coil life (see 4.6.16). There shall be no evidence of damage.
3.19 Resistance to soldering heat (see 4.6.17). There shall be no damage which would adversely
affect normal operation of the relay.
3.20 Salt spray or salt atmosphere (corrosion) (see 4.6.18). There shall be no evidence of breaking,
cracking, chipping, or flaking of the finish, nor exposure of the base metal, due to corrosion, which would
adversely affect the application or performance characteristics of the relay.
3.21 Overload (applicable to high level relays only) (see 4.6.19). The voltage drop across closed
contacts shall be less than or equal to 5 percent of the applied load voltage and the voltage across open
contacts shall be 95 percent or more of the applied load voltage. The case-to-ground fuse shall remain
electrically continuous.
3.22 Life (see 4.6.20). For low level testing, the contact miss detector's monitoring level shall be less
than or equal to 100 ohms (unless otherwise specified, see 3.1). For high level testing, the contact miss
detector's monitoring level shall be less than or equal to 5 percent of the applied load voltage and the
voltage across open contacts shall be 95 percent or more of the applied load voltage. Unless otherwise
specified, the static contact resistance following cycling shall be no greater than twice the initial specified
contact resistance requirement. There shall be no mechanical or electrical failure. Welding of contacts,
failure to make, carry or break the load, or failure of the fuse connected between case and load system
ground or neutral shall constitute a failure. Relays indicating failure, not verified in accordance with a
failure verification procedure approved by the Qualifying Activity, may be returned to test. During post
life tests, failure of a diode shall constitute a failure.
3.23 Intermediate current (see 4.6.21). During cycling, unless otherwise specified (see 3.1), the
resistance of a closed contact shall be less than or equal to 3 ohms and the voltage across an open
contact shall be 95 percent or more of applied load voltage. After cycling, the static contact resistance
shall be measured at room ambient (+25C) and shall not exceed the limits as specified (see 3.1).
Intermediate current shall not be considered a low level or high level contact load rating (see 6.1.1).
There shall be no mechanical or electrical failure. Welding of contacts, failure to make, carry or break
the load, or failure of the fuse connected between case and load system ground or neutral shall
constitute a failure. Relays indicating failure, not verified in accordance with a failure verification
procedure approved by the qualifying activity, may be returned to test.
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