Method and cycle
Send the standard or customer procedure, revision, temperature, duration and permitted ramp or exhaust sequence.
PCT test chamber
A saturated-steam pressure cooker test chamber for accelerated moisture-resistance evaluation of electronic packages, components and materials.
MODELSDX-PCT350 / DX-PCT450
STANDARD TEMPERATURE+110 to +132°C
MOISTURE CONDITIONSaturated steam / approx. 100% RH
POWER SUPPLYAC 380V, 50Hz, three phase
+143°C and +147°C configurations, bias terminals, specimen preheating and custom fixtures are available after method review.
Recommendation
Product Details
IMAGE PLACEHOLDER — Replace with real DX-PCT350 / DX-PCT450 product and open-door photos
SATURATED STEAM PRESSURE AGING
Select a PCT test chamber from the prescribed method and loaded specimen—not temperature alone.
Dexiang DX-PCT350 and DX-PCT450 pressure cooker test chambers generate a saturated-steam environment at elevated temperature and pressure for accelerated moisture-resistance evaluation. Start with the exact PCT method, load envelope, exposure condition and post-test inspection plan before selecting a model.
Loaded specimens
Provide dimensions, mass, quantity, orientation, packaging and fixture drawing.
Steam access
Define spacing and loading so steam can reach the intended surfaces without blocking drainage.
Acceptance evidence
State calibration, FAT, pressure-vessel documentation and post-test measurements.
CONTROL THE EXPOSURE
Repeatable PCT testing depends on steam condition, loading and the complete cycle.
PCT uses saturated steam—approximately 100% RH—rather than independently adjustable humidity. Temperature and saturated-steam pressure are physically linked, so the agreed procedure must define the condition and pressure basis.
+110 to +132°C. +143°C and +147°C are high-temperature custom configurations, not standard claims.
Warm-up and pressurization depend on water quantity, load mass, fixture and setpoint. Confirm the guaranteed cycle in the proposal.
Automatic pressure release and cooling should follow the method. Premature opening or aggressive exhaust can damage specimens and create misleading results.
Use deionized or distilled water with the purity required by the method and operating manual. Do not use untreated tap water.
Keep drainage and steam paths open. Specify tray material, spacing, total mass and any contamination-control requirement.
Specimen preheating, bias terminals and special fixtures require method, wiring and condensation-risk review.
MATERIALS AND FAILURE MODES
Use PCT to accelerate moisture-driven changes, then measure the intended failure evidence.
Typical specimens include semiconductor packages, electronic components, encapsulants, adhesives, coatings, plated parts and sealed assemblies. The chamber applies stress; the inspection plan determines what the result means.
Evaluate moisture ingress, delamination, cracking, seal degradation or interface separation using the required downstream method.
Inspect leads, metallization, contacts and insulation resistance where moisture exposure may accelerate corrosion or leakage.
Compare molding compounds, coatings, adhesives and surface treatments under the same controlled load and cycle.
Interpretation boundary: PCT hours do not universally equal years in service. Excessive stress can change the failure mechanism. Use controls, intermediate inspections and correlation evidence appropriate to the product.
MODEL AND CONFIGURATION
Choose DX-PCT350 or DX-PCT450 from usable load space and throughput.
The chamber drawing, fixture clearance and final technical agreement control the delivered dimensions. Do not size a cylindrical vessel from nominal volume or model name alone.
| Item | DX-PCT350 | DX-PCT450 |
|---|---|---|
| Test condition | Saturated steam, approximately 100% RH | |
| Standard temperature | +110 to +132°C | |
| High-temperature option | +143°C / +147°C after engineering review | |
| Chamber selection reference | Φ300 × D450 mm* | Φ400 × D550 mm* |
| Shelves | Two SUS316 shelves; special layout available after load review | |
| Power supply | AC 380V ±10%, 50Hz, three-phase five-wire | |
| Water system | Internal tank and automatic water supply; use specified purified water | |
| Data and communication | Temperature, pressure, time and alarm records; interface configuration confirmed in quotation | |
| Warranty | One year | |
* Chamber dimensions are provisional selection references until confirmed by the approved Dexiang drawing. DX-PCT450 exterior dimensions, weight and model power ratings are intentionally omitted pending confirmation.
CHOOSE THE RIGHT TEST ROUTE
PCT is not interchangeable with HAST, 85/85 damp heat or a sterilization autoclave.
Select the equipment from the prescribed moisture state, pressure, bias requirement and evaluation objective.
PCT
Saturated steam at elevated temperature and pressure. Use when the method specifies pressure-cooker or unbiased autoclave exposure.
HAST / UHAST / BHAST
Controlled pressurized damp heat, commonly unsaturated. Electrical bias requires engineered terminals, insulation and monitoring.
85°C / 85% RH
Atmospheric-pressure damp heat below the boiling point, normally performed in a temperature-humidity chamber.
Sterilization autoclave
Designed for a different process and acceptance objective. A sterilizer label does not establish electronics-reliability test capability.
STANDARDS AND METHOD REVIEW
Confirm the exact PCT method edition, condition and acceptance plan.
Equipment range alone does not prove conformity. Specimen preparation, water quality, loading, ramp, dwell, exhaust, conditioning and post-test evaluation must also follow the applicable procedure.
REQUEST A USEFUL PROPOSAL
Send eight inputs for model, cycle and fixture review.
- 1
Method
Standard/customer procedure and revision.
- 2
Condition
Temperature, pressure basis, duration and cycle.
- 3
Specimens
Drawing, quantity, mass and materials.
- 4
Loading
Orientation, spacing, tray and fixture.
- 5
Evaluation
Failure criteria and post-test measurements.
- 6
Options
Preheating, bias, ports or special racks.
- 7
Utilities
Voltage, water, drainage and installation access.
- 8
Evidence
FAT, calibration and vessel documents.
Also provide the destination country, required language, delivery date and training needs. Final delivery timing follows the approved configuration and order schedule.
FAQ
PCT test chamber questions
What is a PCT test chamber?
It is a pressure cooker test chamber that exposes specimens to saturated steam at elevated temperature and pressure to accelerate moisture-resistance evaluation.
Is humidity adjustable in a PCT chamber?
PCT operates in saturated steam, approximately 100% RH. Humidity is not treated as an independent adjustable setpoint as it is in an unsaturated HAST system.
Which model should I choose?
Select DX-PCT350 or DX-PCT450 from the actual loaded envelope, fixture clearance, total mass and required throughput. Confirm chamber dimensions on the approved drawing.
What is the standard temperature range?
The standard configuration is +110 to +132°C. +143°C and +147°C are high-temperature customization options subject to engineering review.
What is the difference between PCT and HAST?
PCT uses saturated steam and is commonly unbiased. HAST commonly uses controlled unsaturated pressurized humidity; BHAST adds electrical bias. Follow the named method.
Are bias terminals standard?
No. Bias terminals are optional and require review of voltage, current, channels, insulation, feedthroughs and monitoring. A bias option does not automatically establish BHAST conformity.
Why might specimen preheating be needed?
Optional preheating can help manage condensation risk during the start of a test. Its use must match the method and specimen sensitivity.
Does the standard unit require cooling water or compressed air?
The standard route uses self-generated steam and does not require external cooling water or compressed air. Confirm any fast-pressure or special cooling option in the proposal.
What water should be used?
Use deionized or distilled water that meets the method and operating manual. Untreated tap water can introduce contamination and deposits.
What safety features are included?
The reviewed configuration includes overtemperature, low-water/dry-heat, overpressure, door interlock, automatic and manual relief, electrical protection and emergency-stop functions. Final device settings follow the vessel documents and agreement.
Can PCT time be converted directly into field life?
No universal conversion applies. Correlation depends on the material, stress and failure mechanism, and excessive stress may produce a different failure mode.
What is the warranty?
The standard warranty is one year. Confirm installation, training, response scope and destination arrangements in the quotation.
PCT CONFIGURATION REVIEW
Get the right chamber, cycle and fixture plan before quotation.
Send your PCT method, target condition, specimen drawing, load quantity, fixture and documentation requirements. Dexiang will review DX-PCT350 versus DX-PCT450 and return a configuration-based proposal.
Dexiang｜ Instruments
As a high-tech manufacturer, we integrate R&D, design, production, and sales under one roof. Our philosophy—"Quality Ensures Survival, Integrity Drives Development, and Management Yields Efficiency"—is woven into every product we build. We continuously assimilate cutting-edge global technologies and refine our practices through years of hands-on experience.
