MIL-R-83407-3 Relays, Reed Mercury Wetted, Solder Seal, 0 To 7.5 Volt Amperes

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MIL-R-83407/3D

REQUIREMENTS:

Design and construction:

Dimensions and configuration: See figure 1. Enclosure: Metal, tin finish.

Terminals: Solder pin.

Contact data: 1/

Screening: Applicable. Arrangement: See table I. Load ratings:

Switching (dc or peak ac): See figure 2.

Carry: From A, 0 to 2 amperes. Form C, 0 to 1 ampere.

Contact resistance (both initial and after life): 60 milliohms, maximum. Contact noise: Not applicable.

Contact bounce: Contact bounce shall be measured on each contact set using an oscilloscope or other acceptable means approved by the qualifying activity. The trace shall show contact switching at operate and release and appropriate timing markers. Rated voltage shall be applied to the coil. Contact bounce shall be measured at a contact load of 100 mA at 6 V dc. A contact bounce shall be considered any occurrence equal to or greater than 90 percent of the open circuit voltage with a pulse width of 10 microseconds or greater.

The circuit shown on figure 1 of military specification MIL-R-83407, or equivalent, shall be used. Contact bounce shall not exceed 2.5 milliseconds (operate time not included).

Switch capsule screening procedure (applicable to dash numbers -011 through -020): 2/

Gross leak screening procedure: All switch capsules shall be subjected to an external air pressure of 100 psi for

12 +∞, -0 hours followed by a temperature bake at 150°C for 0.5 +∞, -0 hours. Switch capsules that pass the dynamic switching characteristics test of this specification shall be acceptable.

Fine leak screening procedure: All switch capsules shall be subjected to fine leak test per MIL-STD-202, method

112, test condition C, procedure IIIb. The maximum leak rate shall be 1 x 10 -12 atm cm3/s.

Coil data: See table I.

Duty rating: Continuous.

Coil inductance: Not applicable.

Coil power dissipation: Not applicable.

Operate and release time: 3.0 milliseconds, maximum over temperature range.

1/ The minimum hold-off voltage shall be 1,000 V dc.

2/ The switch shall be magnetically actuated with mercury-wetted contacts. The switch shall not utilize an evacuation of back-fill hollow tubing as a terminal.