QUALITY CONFORMACE INSPECTIONS (QCI)
Quality Conformance Inspections (QCI) are standard for all MIL-PRF-55310 products. Sample units are tested in accordance with Group A and Group B requirements for inspection lots.
For space level products, Fre-Tech offers Screening and Quality Conformance testing in accordance with - or superior to - MIL-PRF-55310 and MIL-PRF-38534. Our application note describing the differences in these requirements can be found here.
Group A
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ELECTRICAL TEST |
Supply Voltage, Input Current, Output Waveform, Output Voltage Power, Rise and Fall Times, Duty Cycle, and Start-Up Time (as required) |
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FREQUENCY-TEMPERATURE STABILITY |
Initial Accuracy at Reference Temperature, Initial Frequency-Temperature Accuracy and Frequency-Temperature Tolerance |
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FREQUENCY-VOLTAGE TOLERANCE |
Output Frequency is measured when oscillator supply voltage is adjusted to its specified nominal value up to its maximum / minimum values |
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OVERVOLTAGE SURVIVABILITY |
Overvoltage of 20% above the maximum specified |
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VISUAL AND MECHANICAL |
Verify Material, Design, Construction, Workmanship, Physical Dimensions, and Marking per MIL-PRF-55310 |
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SOLDERABILITY TEST |
MIL-STD-202, Method 208 |
Group B
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AGING TEST |
Oscillator is energized in oven for a continuous period of 30 days at 70ºC ±3ºC. The Output frequency is measured within an interval of 72 hours maximum per MIL-PRF-55310 |
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