The PCT (Pressure Cooker Test) chamber, also known as the PCT high-pressure accelerated aging test chamber, is a reliability testing device used to simulate high-temperature, high-humidity, and high-pressure environments. This equipment is primarily used to evaluate the moisture resistance, sealing performance, and accelerated aging life of electronic components, semiconductor packages, and other products under harsh conditions. Core applications include detecting open/short circuit faults caused by moisture penetration, accelerated aging life testing, and sealing performance testing. Its application areas also include defense, aerospace, automotive parts, electronic components, plastics, magnets, pharmaceuticals, circuit boards, and LED industries.

Atmars equipment features a circular stainless steel inner tank design to prevent condensation and dripping, and is equipped with a patented sealing structure to enhance sealing performance under high pressure. Its control parameters include a temperature range of 100℃~132℃, humidity of 100%RH, and corresponding pressure ranges. Safety protection devices include automatic critical point safety protection, automatic overpressure venting and relief, over-temperature alarm power-off and anti-scalding devices, and dual overheat protection devices, complying with national safety container standards. Design features include continuous operation with single or automatic water filling, a vacuum purification system, and automatic temperature/pressure detection safety access control with a circular door.

Its working principle is based on the Clausius-Clapeyron equation (the law of saturated vapor pressure). In a closed pressure vessel, heating water produces saturated vapor. As the temperature increases, the saturated vapor pressure increases exponentially, accelerating the penetration of water vapor into the product.

The main testing objectives include: conducting accelerated life tests to increase environmental and operational stresses to shorten the test time; investigating and analyzing the wear, service life, and failure distribution of electronic components and mechanical parts; and evaluating the product's sealing performance, pressure resistance, and airtightness.

The PCT test is a saturated (100% humidity) accelerated humidity test, primarily simulating the high temperature, high temperature and high humidity, and pressure climatic environments that products may encounter during storage, transportation, and use.

ATMARS equipment typically operates within a temperature range of 100℃ to 135℃, with a maximum of 143℃. The humidity range is 100%RH (saturated steam). The pressure range is relative pressure of 0.0 kg/cm² to 2.8 kg/cm², corresponding to absolute pressure of 1.0 kg/cm² to 3.0 kg/cm². The safe pressure capacity is typically 4 kg/cm². In terms of control accuracy, the temperature control accuracy is ±0.5℃, the temperature distribution accuracy is ±1.5℃, and the temperature resolution accuracy is 0.1℃. Various internal chamber dimensions are available; for example, the PCT-25 has an internal chamber size of ∮250×450D mm, the PCT-35 has ∮350×450D or 500D mm, and the PCT-45 has ∮550×550D mm. In terms of materials, the inner casing is typically made of SUS304 or SUS316 cold- and heat-resistant stainless steel; the outer casing is made of SECC steel or stainless steel and undergoes electrostatic powder coating. It takes approximately 30 minutes to pressurize from atmospheric pressure to 2.0 kg/cm². Other parameters include a heating time of approximately 30-60 minutes, temperature uniformity of ±0.5℃ or better, and temperature fluctuation of ±0.3℃.