Jianhu JH-Series Precision Temperature & Humidity Controlled Walk-in Environmental Test Chamber

Overview

The Jianhu JH-Series Precision Temperature & Humidity Controlled Walk-in Environmental Test Chamber is an engineered solution for long-duration, high-fidelity environmental simulation in semiconductor R&D, advanced packaging validation, and reliability qualification of microelectronic components. Designed around a dual-stage refrigeration system with cascade compressors, PID-controlled electric heating elements, and a fully insulated stainless-steel chamber structure, the JH-Series maintains stable thermal-hygrometric conditions across large internal volumes (standard and custom configurations). Its core operational principle relies on closed-loop feedback control of both air temperature and relative humidity via precision platinum resistance thermometers (PT100), capacitive humidity sensors, and a dedicated steam-based humidification system with dehumidification via mechanical cooling coils. This architecture ensures compliance with critical test standards including JEDEC JESD22-A104 (Temperature Cycling), JESD22-A108 (Bias Humidity Testing), MIL-STD-810H Method 507.6 (Humidity), and ISO 16750-4 (Road Vehicles — Environmental Conditions). The chamber is not intended for accelerated life testing alone but serves as a foundational platform for controlled process environment replication—essential for wafer-level probing, burn-in staging, and pre-qualification screening of ASICs, MEMS sensors, and high-speed interconnects.

Key Features

• High-stability temperature control with 0.1 °C resolution and ±2.0 °C uniformity across full working volume (per IEC 60068-3-5 measurement protocol)
• Integrated humidity control system delivering 20–98% RH range with ±3% RH accuracy at 25 °C (calibrated traceable to NIST-certified reference hygrometers)
• Walk-in configuration with double-sealed, vacuum-insulated door assembly and anti-condensation heating strips to prevent moisture ingress during low-temperature operation
• Low-noise acoustic design (<62 dB(A) at 1 m distance), achieved through vibration-isolated compressor mounting, optimized airflow ducting, and sound-dampening chamber lining
• Modular PLC-based controller with Ethernet interface supporting Modbus TCP and optional OPC UA integration for factory automation systems
• Compliance-ready data logging: time-stamped temperature/humidity profiles with audit trail, user access levels, and electronic signature capability aligned with FDA 21 CFR Part 11 Annex 11 requirements

Sample Compatibility & Compliance

The JH-Series accommodates full-rack server chassis, wafer carriers (FOUPs/SMIF pods), PCB assemblies, and prototype modules up to 2.4 m in height. Internal shelving is configurable using 304 stainless-steel rails with load capacity up to 150 kg per shelf. All materials in contact with test samples—including interior panels, gaskets, and sensor housings—are non-outgassing and RoHS-compliant. The system meets electromagnetic compatibility requirements per EN 61326-1 and safety certification per EN 61010-1. It supports GLP/GMP-aligned validation protocols (IQ/OQ/PQ), with documentation packages available for IQ/OQ execution per ASTM E2500 and ISO/IEC 17025 laboratory accreditation frameworks.

Software & Data Management

The embedded control software provides real-time trending, multi-segment programmable profiles (up to 999 steps), and alarm-triggered event logging. Export formats include CSV, PDF, and XML for integration into LIMS or MES platforms. Optional cloud-enabled remote monitoring (via secure TLS 1.2 connection) allows authorized users to view live chamber status, download historical datasets, and receive SMS/email alerts on deviation events. All data records are immutable post-generation and include cryptographic hash verification. Software validation documentation (including risk assessment per ICH Q9 and software requirements specification) is provided for regulated environments.

Applications

• Pre-silicon thermal characterization of FPGA and SoC prototypes under varying ambient loads
• Reliability stress screening of flip-chip BGA packages prior to board-level assembly
• Humidity soak testing of optical sensor housings for automotive ADAS applications
• Environmental conditioning of photonic integrated circuits (PICs) during wavelength calibration
• Long-term stability evaluation of MEMS accelerometers and gyroscopes in aerospace-grade qualification programs
• Controlled aging studies of conformal coatings used in medical-grade implantable electronics

FAQ

What is the standard lead time for a custom-configured JH-Series chamber?
Standard lead time is 12–16 weeks from PO confirmation, inclusive of engineering review, FAT (Factory Acceptance Test), and documentation handover.
Can the chamber be validated to meet ISO/IEC 17025 requirements?
Yes—Jianhu provides IQ/OQ documentation templates and on-site PQ support by certified metrologists; third-party validation services are also coordinated upon request.
Is remote firmware update supported?
Firmware updates require local USB media upload and administrator authentication; over-the-air updates are disabled by default for cybersecurity compliance (IEC 62443-3-3 SL2).
Does the system support dry nitrogen purge for oxygen-sensitive applications?
Optional nitrogen purge interface (ISO-KF 25 flange) and pressure-regulated inlet manifold are available as factory-installed accessories.
What calibration certificates are supplied with delivery?
Each unit ships with factory calibration certificates for temperature (±0.2 °C uncertainty) and humidity (±2.5% RH uncertainty), traceable to national metrology institutes (NIM, China).