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Thermal shock (high and low temperature operation)
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Relays, Reed (Mercury Wetted) General Specification For
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Verification



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MIL-R-83407B
3.18 Shock (specified pulse) (nonoperating). When relays are tested as specified in 4.5.15, there shall be no
evidence of mechanical or electrical damage. Following this test, the dielectric withstanding voltage, contact
resistance, and pickup and dropout voltages shall be as specified in 3.6, 3.11, and 3.9, respectively.
3.19 Vibration (nonoperating). When relays are tested as specified in 4.5.16, there shall be no evidence of
breaking, cracking, chipping, or flaking of the finish or loosening of the terminals. Following this test, the dielectric
withstanding voltage, contact resistance, and the pickup and dropout voltage shall be as specified in 3.6, 3.11, and
3.9, respectively.
3.20 Moisture resistance (when specified) (see 3.1). When relays are tested as specified in 4.5.17, there shall be
no evidence of breaking, cracking, chipping, or flaking of the finish or loosening of the terminals. Immediately after
step 6 of the final cycle, the insulation resistance shall be 100 Mor more. After the 24 hour drying period, the
dielectric withstanding voltage, insulation resistance, contact resistance, and pickup and dropout voltages shall be as
specified in 3.6, 3.7, 3.11, and 3.9, respectively.
3.21 Magnetic interference. When relays are tested as specified in 4.5.18, the pickup and dropout values shall be
within the limits specified (see 3.1).
3.22 Resistance to soldering heat. When relays are tested as specified in 4.5.19, the insulation resistance,
contact resistance, pickup and dropout voltage, and dc coil resistance shall be as specified in 3.7, 3.11, 3.9, and 3.8,
respectively.
3.23 Salt spray (corrosion). When relays are tested as specified in 4.5.20, there shall be no evidence of breaking,
cracking, chipping, or flaking of the finish, or exposure of the base metal due to corrosion, which would adversely
affect the performance of the relay.
3.24 Terminal strength. When relays are tested as specified in 4.5.21, terminals shall be as specified (see 3.1)
and there shall be no evidence of loosening or breaking of the terminals or other damage that could adversely affect
the normal operation of the relays. Bending of printed circuit terminals shall not be construed as damage, provided
they can be satisfactorily reformed to their original configuration.
3.25 Life. When relays are tested as specified in 4.5.22, they shall remain electrically operative and no
mechanical damage shall exist. During and following this test, the relays shall meet the following requirements:
DC coil resistance - - - - - - - - - - - - - -
As specified in 3.8.
Contact resistance - - - - - - - - - - - - - -
As specified in 3.11.
Pickup and dropout voltage - - - - - - -
As specified in 3.9.
Operate and release time - - - - - - - - -
As specified in 3.12.
Dielectric withstanding voltage - - - - -
As specified in 3.6.
Insulation resistance - - - - - - - - - - - -
As specified in 3.7.
3.26 Marking. Relays shall be marked in accordance with MIL-STD-1285 with the following information, as a
minimum:
a. Military Part or Identifying Number (PIN).
b. Circuit diagram (see 3.1).
c. CAGE (FSCM) and date codes.
d. Position direction arrow .
e. Rated coil voltage.
5

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