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Mechanical Life

Method 4.7.28 is a mechanical life test (endurance at reduced load) for military relays. With rated coil voltage, the relay is cycled at 25 percent of rated resistive load for four times the specified minimum operating cycles for relays under 25 amperes contact rating (resistive), and two times the minimum operating cycles for relays of […] Read more

Resistance to Solvents

Method 4.7.23 tests resistance to solvents for military relays. Relays are tested in accordance with method 215 of MIL-STD-202 with the following exceptions: the portion to be brushed includes all markings.One sample shall be tested with each solvent solution. For qualification inspection, samples in excess of the available number of solvents are exempt from testing. […] Read more

Low Temperature Conditioning

Method 4.8.18 tests low-temperature conditioning and capacitance change with temperature for mica dielectric capacitors. In the first part (4.8.18.1), capacitors are placed in a chamber maintained at -55C +/- 3C with rated voltage applied for 48 +/- 4 hours, with circulating air.In the second part (4.8.18.2), capacitance is measured at the temperatures and in the […] Read more

Resistance to Solvents

Method 4.8.2 tests resistance to solvents for mica dielectric capacitors. Capacitors are tested in accordance with MIL-STD-202-215 (resistance to solvents test method). Brushing is not required for this application.The test evaluates whether capacitor markings and protective coatings maintain their integrity when exposed to the solvents and cleaning processes commonly used in military electronics manufacturing and […] Read more

Mating Characteristics

Method 4.5.5 tests mating characteristics of connectors. After insertion of the specified oversize pin the specified number of times, the contact to be tested is held rigid by a suitable jig or fixture, or a qualified mating connector with the approval of the qualifying activity.A gauge containing the test pin or test ring and a […] Read more

Coupling Mechanism Retention Force

Method 4.5.22 tests coupling mechanism retention forces. The adapter body and coupling mechanism are respectively secured to the lower and upper jaws of a tensile tester in an appropriate manner. A tensile load is applied at a rate of approximately 100 pounds/minute up to the specified force and held at that value for one minute.During […] Read more

Thermal Shock (Condition C)

Method 4.5.17 is a thermal shock test for filter connector adapters. Adapters are tested in accordance with method 107 of MIL-STD-202 with the applicable test condition letter specified.Measurements before and after cycling are not applicable for this test. The thermal shock cycling subjects the adapter to rapid temperature transitions to evaluate material integrity and seal […] Read more

Shock (Specified Pulse)

This test evaluates the ability of connector to withstand mechanical shock (impact) loading as specified in MIL-PRF-39018. The specimen is mounted on a shock test machine and subjected to specified shock pulses (typically half-sine, sawtooth, or trapezoidal waveforms) at defined peak acceleration and pulse duration.Mechanical shock testing verifies that the product can withstand the transient […] Read more

Coupling Mechanism Retention Force

This test evaluates the coupling mechanism retention force of connector specimens as specified in MIL-PRF-39012. The test is performed in accordance with the procedures defined in the standard to verify compliance with the applicable requirements.Test specimens are prepared and conditioned as specified, then subjected to the defined test procedure. Results are compared against the acceptance […] Read more

Cable Retention Forces

This test evaluates the cable retention forces of connector specimens as specified in MIL-PRF-39012. The test is performed in accordance with the procedures defined in the standard to verify compliance with the applicable requirements.Test specimens are prepared and conditioned as specified, then subjected to the defined test procedure. Results are compared against the acceptance criteria […] Read more