OK-PCT Series High-Pressure Accelerated Life Aging Test Chamber

Overview

The OK-PCT Series High-Pressure Accelerated Life Aging Test Chamber is an engineered environmental stress test system designed for accelerated reliability evaluation of hermetic and semi-hermetic components under elevated temperature and saturated steam pressure conditions. Based on the principle of Pressure Cooker Test (PCT), it subjects samples to controlled combinations of temperature (121–143 °C), pressure (up to 200 kPa(g)), and 100 % RH saturated steam—conditions that significantly accelerate moisture ingress, electrochemical migration, corrosion, and interface delamination mechanisms. Unlike conventional thermal-humidity chambers, the OK-PCT chamber operates in a sealed, pressurized stainless-steel vessel where steam saturation is maintained without air entrainment, enabling precise replication of JEDEC JESD22-A102, MIL-STD-202 Method 108, and IPC-TM-650 2.6.25 test protocols. Its design prioritizes metrological stability, repeatability, and operational safety across extended test durations (up to 200 h per fill cycle), making it suitable for qualification testing in R&D, incoming inspection, and production line validation.

Key Features

• Microprocessor-based PID control system for precise regulation of saturated steam temperature and pressure—ensuring traceable thermal equilibrium and minimizing overshoot.
• Stainless-steel cylindrical inner chamber conforming to ASME BPVC Section VIII Div. 1 pressure vessel safety standards; seamless construction eliminates crevices and supports long-term corrosion resistance.
• Radially symmetric internal lining with optimized steam flow geometry—reduces localized condensate formation and prevents direct impingement of latent heat on test specimens.
• Integrated pressure-actuated safety interlock: door remains mechanically locked when internal pressure exceeds ambient by >10 kPa; increased sealing force at higher pressures extends gasket service life beyond 5,000 cycles.
• Self-regulating water management system—including auto-fill reservoir, float-level sensor, and low-water alarm—with single-fill operation supporting continuous 200-hour test runs.
• Dual digital displays: LED-based temperature controller (±0.3 °C resolution) and real-time elapsed timer activated only after chamber reaches setpoint—eliminating premature timing errors.
• Automatic unsaturated steam purge during ramp-up ensures consistent steam quality (dryness fraction ≥0.95) per ISO 17025-compliant calibration practices.
• Front-access stainless-steel sample racks (2-tier standard) with adjustable spacing; load capacity rated for uniform thermal distribution under full-pressure conditions.

Sample Compatibility & Compliance

The OK-PCT chamber accommodates electronic packages (QFP, BGA, CSP), multilayer PCBs, LED modules, automotive sensors, medical device housings, and polymer-sealed optoelectronics. It supports test specimen dimensions up to Φ60 cm × 65 cm depth (OK-PCT-65 model). All models comply with IEC 60068-2-66 (damp heat, accelerated), JEDEC JESD22-A102E (PCT), and IPC-9701A (reliability qualification). The chamber’s pressure/temperature logging capability meets GLP audit requirements, and its hardware architecture supports future integration with FDA 21 CFR Part 11-compliant data acquisition systems via RS-485 or Ethernet interfaces.

Software & Data Management

While the base configuration features embedded LED controllers, optional PC-based software (OK-LogSuite v3.2) enables real-time monitoring, automated report generation (PDF/CSV), and trend analysis of temperature, pressure, and runtime. Calibration records, operator ID, and test parameters are stored with timestamped audit trails. Data export conforms to ASTM E2500-20 Annex A2 for equipment qualification documentation. Firmware updates are performed via USB port with cryptographic signature verification to ensure integrity.

Applications

This chamber is deployed in semiconductor packaging qualification (wire bond integrity, mold compound adhesion), automotive electronics validation (ECU housing seals, connector assemblies), aerospace component screening (avionics enclosures, MEMS sensors), and medical device sterilization compatibility studies (polymer housing permeability, adhesive bond degradation). It is routinely used during Design Verification Testing (DVT) to identify latent failure modes—including popcorning, wire sweep, and intermetallic growth—before high-volume manufacturing release.

FAQ

What standards does the OK-PCT chamber support?

It is configured to execute JEDEC JESD22-A102E, MIL-STD-202 Method 108, IPC-TM-650 2.6.25, and IEC 60068-2-66 test profiles out-of-the-box.

Can the chamber operate continuously for 200 hours without manual intervention?

Yes—its integrated water reservoir and auto-refill logic enable unattended operation for up to 200 hours at 132 °C / 200 kPa(g), assuming initial fill and stable utility supply.

Is third-party calibration certification available?

Factory calibration includes NIST-traceable temperature and pressure transducers; ISO/IEC 17025-certified calibration services are available upon request.

How is overpressure protection implemented?

A certified spring-loaded safety valve (ASME Code stamped) opens automatically at 110 % of maximum allowable working pressure (MAWP); secondary electronic pressure cutoff triggers at 105 % MAWP.

Does the chamber meet CE or UKCA marking requirements?

All models carry CE marking per Machinery Directive 2006/42/EC and PED 2014/68/EU; UKCA compliance is supported via UK-recognized Notified Body assessment.