English Product Name

Overview

The OK-TH Series Rapid Temperature Transition Environmental Test Chamber is an engineered thermal stress screening system designed for accelerated reliability testing of electronic components, automotive modules, aerospace subsystems, and industrial PCB assemblies. It operates on the principle of controlled thermal cycling—inducing repeated expansion and contraction in materials through precisely programmed transitions between extreme temperature limits. This accelerates the manifestation of latent defects including intermetallic delamination, solder joint fatigue, coefficient-of-thermal-expansion (CTE) mismatch failures, and die-attach voiding. Unlike conventional thermal chambers, the OK-TH series delivers programmable ramp rates up to 25 °C/min across a wide operational envelope (−70 °C to +150 °C), enabling compliance with JEDEC JESD22-A104, MIL-STD-810H Method 503.5, and IEC 60068-2-14. Its architecture supports both single-step and multi-segment profiles with dwell, ramp, and soak phases—critical for HALT/HASS pre-screening and qualification per IPC-9701 and AEC-Q200 requirements.

Key Features

• High-fidelity thermal control with ±0.5 °C stability and ±2 °C uniformity across full working volume
• Modular refrigeration system using R404A/R23 cascade configuration for deep-cold capability and low-noise operation
• Touchscreen controller with real-time graphing, profile logging, and password-protected parameter editing
• SUS#304 stainless steel interior and insulated double-wall construction for long-term corrosion resistance and thermal integrity
• Configurable ramp rate selection (5, 10, 15, 20, or 25 °C/min) with automatic transition smoothing to minimize overshoot
• Optional humidity control (20–98% RH standard; extended range 5–98% RH available) compliant with IEC 60068-2-78
• Integrated safety systems: over-temperature cut-off, refrigerant pressure monitoring, door interlock, and emergency stop

Sample Compatibility & Compliance

The OK-TH chamber accommodates test specimens up to 100 cm × 100 cm × 100 cm (OK-TH-1000 model), supporting board-level assemblies, enclosures, sensors, and small mechanical subassemblies. Its thermal performance meets or exceeds requirements specified in GB/T 2423.1 (cold), GB/T 2423.2 (heat), GB/T 2423.22 (temperature change), GJB 150.3/150.4 (military environmental testing), and GB/T 10589/11158/10592 (chamber performance standards). All models are CE-marked and designed to support GLP/GMP-aligned validation protocols—including IQ/OQ documentation templates, calibration traceability to NIST standards, and audit-ready event logs.

Software & Data Management

The embedded controller supports data export via USB and optional Ethernet connectivity for remote monitoring. Logged parameters include chamber setpoint, actual temperature/humidity, ramp rate, elapsed time, and alarm history—with timestamp resolution of 1 second. For regulated environments, optional software packages provide 21 CFR Part 11-compliant user access controls, electronic signatures, and immutable audit trails. Exported CSV files are compatible with MATLAB, JMP, and Minitab for statistical analysis of thermal cycle-induced failure modes.

Applications

• Accelerated life testing (ALT) of automotive ECUs under ISO 16750-4 thermal shock conditions
• Qualification of consumer electronics per JEDEC JESD22-A104D (Temperature Cycling)
• Process validation of conformal coating adhesion and reflow soldering integrity
• Reliability screening of MEMS devices, optical sensors, and battery management systems
• Pre-compliance testing for MIL-STD-810H, DO-160G Section 4, and EN 60068-2 series

FAQ

What is the typical lead time for custom configurations?

Standard models ship within 6–8 weeks; custom dimensions, extended humidity range, or special sensor integration require 10–12 weeks.

Can this chamber be integrated into an automated test system?

Yes—RS-485 Modbus RTU and optional Ethernet/IP interfaces support SCADA and MES integration.

Is calibration certification included with delivery?

A factory calibration report (traceable to national standards) is provided; ISO/IEC 17025-certified third-party calibration is available upon request.

Does the system support humidity condensation and freeze-thaw cycles?

With optional low-humidity capability (5% RH) and precise dew-point control, it supports condensation testing per IEC 60068-2-30 and freeze-thaw per ASTM D6941.

What maintenance is required for long-term reliability?

Quarterly refrigerant pressure verification, annual condenser coil cleaning, and biannual controller firmware updates are recommended per the maintenance schedule.