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.

  • Visual Inspection
  • Shock
  • Vibration
  • Temperature Cycling
  • Seal
  • Solderability
  • Thermal Shock
  • Steady State Life
  • Ambient Pressure
  • Constant Acceleration
  • Destructive Bond Pull
  • Salt Spray
  • ... and Many More

Test Methods

QUALITY CONFORMACE INSPECTIONS (QCI)

​OF HIGH RELIABILITY CRYSTAL OSCILLATORS

THE WORLD'S LEADING MANUFACTURER​​

Q-Tech Corporation

(310) 836-7900

For space level products, Q-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

  • ELECTRICAL TEST: Supply Voltage, Input Current, Output Waveform, Output Voltage Power, Rise and Fall Times, Duty Cycle, and Start-Up Time (as required)
  • FREQUENCY-TEMPERATURE STABILITY: Initial Accuracy at Reference Temperature, Initial Frequency-Temperature Accuracy and Frequency-Temperature Tolerance
  • FREQUENCY-VOLTAGE TOLERANCE: Output Frequency is measured when oscillator supply voltage is adjusted to its specified nominal value up to its maximum / minimum values
  • OVERVOLTAGE SURVIVABILITY: Overvoltage of 20% above the maximum specified
  • VISUAL AND MECHANICAL: Verify Material, Design, Construction, Workmanship, Physical Dimensions, and Marking per MIL-PRF-55310
  • SOLDERABILITY TEST per MIL-STD-202, Method 208


GROUP B

  • 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