Yiheng BPZ-6060HV / BPZ-6090HV High-Vacuum Drying Oven

Overview

The Yiheng BPZ-6060HV and BPZ-6090HV High-Vacuum Drying Ovens are precision-engineered thermal processing systems designed for oxygen-sensitive, contamination-critical drying applications in semiconductor fabrication, microelectronics packaging, medical device manufacturing, and analytical sample preparation. These ovens operate on the principle of vacuum-assisted thermal desorption—removing volatile residues, solvents, and adsorbed moisture under controlled low-pressure conditions while suppressing oxidation and surface degradation. With an ultimate vacuum capability of 1.0×10⁻⁴ Pa and a temperature control range from ambient +10°C to 200°C, they meet stringent requirements for HMDS (hexamethyldisilazane) pre-bake processes prior to photolithography, as well as for moisture-free annealing of MEMS components, calibration standards, and hygroscopic reference materials. The ovens are constructed for integration into ISO 14644-compliant cleanrooms and support GMP-aligned process validation through traceable parameter logging and programmable sequence execution.

Key Features

• 316 stainless steel vacuum chamber with electropolished interior surface—resistant to halogenated and acidic vapors encountered in semiconductor wafer processing;
• Internal chamber heating architecture—eliminates external heating elements inside the vacuum space, preventing outgassing, particulate shedding, and electrical interference;
• Intelligent touchscreen HMI with menu-driven interface—enables direct setting of temperature setpoint, vacuum ramp rate, hold time, nitrogen purge cycles, and multi-step program sequencing;
• Ergonomic double-layer tempered glass observation door with adjustable silicone gasket compression—ensures visual monitoring without compromising vacuum integrity or thermal stability;
• Dual-stage vacuum system architecture—compatible with optional high-efficiency turbomolecular pump assemblies to achieve and maintain ≤1.0×10⁻⁴ Pa;
• RS-485 serial interface compliant with Modbus RTU protocol—enables remote monitoring, real-time data acquisition, and integration into centralized SCADA or MES platforms;
• Dedicated overtemperature protection circuit with independent thermal cutoff sensor—meets IEC 61000-6-2 immunity and IEC 61000-6-4 emission standards;
• Modular HMDS process kit option—includes mass flow-controlled nitrogen inlet, vapor delivery manifold, and automated vacuum/nitrogen cycling logic for repeatable priming of silicon wafers.

Sample Compatibility & Compliance

These ovens accommodate standard 100 mm, 150 mm, and 200 mm semiconductor wafers on quartz or ceramic carriers, as well as PCB substrates, thin-film sensors, optical filters, and pharmaceutical excipient batches. Chamber geometry supports uniform thermal distribution across full-load configurations per ASTM E2207 and ISO 17025 thermal mapping guidelines. All models conform to CE marking requirements (2014/30/EU EMC Directive, 2014/35/EU LVD Directive), and their control firmware architecture supports audit-ready operation under FDA 21 CFR Part 11 when paired with validated third-party data logging software. Vacuum integrity is verified per ISO 2859-1 sampling plans; chamber leak rate is ≤5×10⁻⁷ Pa·m³/s when tested with helium mass spectrometry.

Software & Data Management

The embedded controller logs timestamped records of chamber pressure, internal temperature, program step status, and alarm events—retained for ≥30 days onboard. Via RS-485, users can export CSV-formatted logs or stream live parameters to host systems using open-protocol drivers. Optional Yiheng LabLink™ software provides graphical trend analysis, SPC charting (X-bar/R), and electronic signature-enabled batch reports compliant with ALCOA+ principles. All configuration changes and manual interventions are recorded with user ID, timestamp, and reason-for-change fields—supporting GLP/GMP documentation workflows.

Applications

• HMDS vapor priming of silicon wafers prior to photoresist spin-coating;
• Oxidation-free drying of GaN, SiC, and compound semiconductor substrates;
• Residual solvent removal from MEMS packaging adhesives and underfill materials;
• Moisture stabilization of reference standards for gravimetric calibration;
• Pre-conditioning of optical coatings and IR-transmissive windows;
• Low-outgassing bakeout of vacuum chamber components and UHV feedthroughs;
• Controlled dehydration of biopolymer scaffolds and lyophilized diagnostics reagents.

FAQ

What vacuum level is achievable with the standard configuration?
The BPZ-6060HV/BPZ-6090HV achieves ≤1.0×10⁻⁴ Pa when equipped with the optional turbomolecular pumping station. Base configuration includes a two-stage rotary vane pump capable of ≤5×10⁻² Pa.
Can the oven be validated for GMP production environments?
Yes—when operated with documented IQ/OQ protocols, calibrated traceable sensors, and audit-trail-enabled software, it meets Annex 11 and ISO 13485 requirements for equipment qualification in regulated manufacturing.
Is nitrogen purging integrated into the standard control logic?
Standard firmware includes programmable N₂ purge cycles (vacuum → N₂ fill → vacuum); HMDS-specific sequencing requires the optional process module.
How is temperature uniformity verified across the chamber volume?
Per IEC 60068-3-5, uniformity is characterized using nine-point thermocouple mapping at 100°C and 150°C—data available in factory acceptance test reports.
What maintenance intervals are recommended for vacuum system components?
Rotary vane pump oil replacement every 500 operating hours; turbomolecular pump bearing inspection every 12,000 hours; silicone gasket replacement every 24 months or after 500 vacuum cycles—whichever occurs first.