The Gross & Fine Pressurization System is designed to operate with a Trio-Tech Model G-203 Leak Detector to detect minute defects in the package seals of microelectronics components. In a two-phase sequence the Pressurization System performs evacuation and pressurization of components as part of a gross leak detection process. Testing allows detection of gross leaks in the range of 100 to 10-5 atmospheric cubic centimeters per second (atm cc/sec) in accordance with MIL-STD-883, Method 1014.8, Condition C. The Gross & Fine Pressurization System consist of three main components: vacuum pump, activation chamber, and fluorocarbon holding tank. Microelectronic components are soaked in a vacuum for a specified period of time. Then, while still in a vacuum, the components are preconditioned with Fluorinert® Liquid FC-72 through a pressurization cycle. Leaks, if present, are actually observed during the final phase when the components are placed in the Leak Detector containing heated Fluorinert® Liquid (FC-40).

Gross and Fine Leak Pressurization Test Equipment Specs:

  • Vacuum Range: 0.5 to 5 Torr
  • Pressure Range: 20 to 125 Psia
  • Chamber Volume: 7 to 25 Liters


Bubble Tester Specs:

  • Temperature Range: 50 to 145°C
  • Chamber Volume: 3 to 12 Liters


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