Key Advantages：
Three-zone design ensures precise thermal shock simulation
Rapid temperature transition: ≤3–10 seconds
Wide range: -70°C to +200°C
High precision control: ±0.5°C stability
Continuous cyclic testing capability
Compliant with MIL-STD-810, IEC 60068, JESD22
Robust design for thousands of test cycles
Key Specifications of three zone thermal shock chamber：
| Serial number | Capacity ( m³ ) | 0.07 | 0.11 | 0.2 | 0.3 | |
| 1 | Model | Thermal Shock Test Chamber (3-Zone) | ETS70-40W | ETS110-40W | ETS200-40w | ETS300-40W |
| 2 | ETS200-55W | ETS300-55W | ||||
| 3 | ETS70-65W | ETS110-65W | ETS300-65W | |||
| 4 | Internal Dimension WxHxD (mm) | 410x460x370 | 650x460x370 | 650x460x670 | 970x460x670 | |
| 5 | External Dimension WxHxD (mm) | 1470x1860x1570 | 1710x1860x1570 | 1710x1860x1870 | 2030x1860x1870 | |
| 7 | Temperature Range of Testing zone | -40W(-D): (+60℃ to +150℃) - (0℃ to -40℃) -55W(-D): (+60℃ to +150℃) - (0℃ to -55℃) -65W(-D): (+60℃ to +150℃) - (0℃ to -65℃) | ||||
| 8 | Exposure Time of High Temperature | Preheating Temperature Range: +60°C to +200°C Heating Rate: +60°C to +200°C ≤ 20min | ||||
| 9 | Exposure Time of Low Temperature | Precooling Temperature Range: -75°C to 0°C Cooling Rate: From +20°C to -75°C ≤ 70min | ||||
| 10 | Temperature of Heat-storing Slot/ Heating Time（Recovery) | RT~200°C / About 30mins | ||||
| 11 | Temperature of Cool-storing Slot/ Cooling Time （Recovery) | RT~-70°C / About 45mins | ||||
| 12 | Temperature Recovery Time/ Conversion Time | ≤5min/≤5sec | ||||
| 13 | Temperature Fluctuatio n/Deviation/Uniformity | ≤ ± 0.5℃/≤ ± 2.0℃/≤ 2.0℃ | ||||
| 14 | Cooling System | Semi-hermetic double-stage compreor(Water-cooled type) Hermetic double-stage compressor (Air-cooled type) | ||||
| 15 | Accessories | Viewing window(special opfional) | ||||
| 16 | Performance Example( Satisfy test standard IEC60068-2-14) | |||||
| 17 | Rated power | 26kw | 29kw | 37kw | 37kw | |
| 18 | 38kw | 38kw | ||||
| 19 | 38kw | 42kw | 58kw | |||
| 20 | Power | AC380V: 3phase 5 lines : 50/60HZ | ||||
| 21 | Approx. Weight (Kg) | 1050 | 1150 | 1400 | 1470 | |
| 22 | ※1:Both the rate of temperature rising and reduction are the performance while high temperature chamber and low temperature chamber is running ※2:In center point ※2:Recovery condition:ambient temperature:+25℃,cooling water temperature:+25℃,power voltage:380VAC(1±10%) | |||||
Opening：
The Three-Zone Thermal Shock Chamber is designed to evaluate the ability of materials, electronic assemblies, and finished products to withstand rapid and repeated temperature transitions. By maintaining the specimen in a dedicated test zone while alternately introducing hot and cold airflow, the chamber delivers highly repeatable thermal shock testing with minimal mechanical disturbance.
With operating temperatures from -70°C to +200°C and fast transition performance, it is widely used for product qualification, reliability verification, and failure analysis across aerospace, automotive, semiconductor, defense, and electronics industries.
When Should You Choose a Three-Zone Thermal Shock Chamber?
Selecting the right thermal shock chamber depends on the required testing objectives rather than simply the temperature range.
A three-zone thermal shock chamber is the preferred solution when specimens must remain stationary during testing, ensuring maximum temperature uniformity and eliminating mechanical stress caused by basket transfer. This configuration is particularly valuable for precision electronic assemblies, semiconductor devices, aerospace components, and other products where repeatability and data consistency are critical.
Compared with a two-zone design, a three-zone chamber offers:
• Better temperature uniformity around the specimen
• Improved test repeatability
• Reduced mechanical vibration during testing
• Higher reliability for delicate electronic components
• Easier compliance with demanding qualification standards such as IEC 60068-2-14 and MIL-STD-810H
If testing is primarily intended for high-volume production screening where cost efficiency is the main concern, a two-zone chamber may be sufficient. For product qualification, reliability verification, and research applications, a three-zone chamber is generally the recommended choice.
Working Principle：
The three-zone thermal shock system operates using separate high, low, and test chambers. Samples are shuttled rapidly between zones to create instant thermal stress, which is critical for detecting:
Material expansion/contraction mismatch
Solder joint cracking
Structural weakness in components
This is the main difference compared to two-zone or standard thermal cycling chambers.
Two-Zone vs Three-Zone Thermal Shock Chamber
| Feature | Three-Zone Thermal Shock Chamber | Two-Zone Thermal Shock Chamber |
|---|---|---|
| Sample Movement | Specimens remain stationary in the test zone; only hot and cold air is switched. | Specimens are mechanically transferred between hot and cold zones using a basket. |
| Temperature Stability | Excellent temperature uniformity with minimal disturbance to the specimen. | Good stability, but specimen movement may introduce slight temperature fluctuations. |
| Thermal Recovery Time | Faster recovery due to dedicated hot and cold chambers and stationary testing. | Standard recovery time depending on basket transfer speed and chamber design. |
| Mechanical Stress on Specimens | Lower mechanical stress, making it ideal for delicate electronic components. | Higher mechanical stress caused by repeated basket movement. |
| Large or Heavy Specimens | Better suited for larger or heavier samples because no physical movement is required. | Moderate capability; specimen size and weight are limited by the transfer mechanism. |
| Semiconductor Reliability Testing | Highly recommended for semiconductor packaging, ICs, and precision electronic assemblies. | Suitable for general qualification testing where specimen movement is acceptable. |
| Aerospace & Defense Qualification | Recommended for mission-critical components requiring high repeatability and precise thermal control. | Suitable for standard environmental qualification tests with moderate accuracy requirements. |
| Typical Applications | Aerospace, semiconductor, automotive electronics, military equipment, medical devices, and research laboratories. | Consumer electronics, general industrial products, automotive components, and routine production testing. |
| Initial Investment | Higher initial investment due to more complex chamber design and control system. | Lower equipment cost, making it suitable for cost-sensitive applications. |
| Best Choice When... | High accuracy, repeatability, and protection of sensitive test specimens are the primary priorities. | Budget, testing throughput, and routine qualification are the primary considerations. |
Thermal Shock vs Thermal Cycling：
| Feature | Three-Zone Thermal Shock | Thermal Cycling |
|---|---|---|
| Temperature Transition | Instant | Gradual |
| Stress Type | Extreme | Controlled |
| Typical Application | Military, Aerospace | Electronics, PCB |
| Standard | MIL-STD, IEC | JESD22 |
Typical Failures Detected During Thermal Shock Testing
Thermal shock testing is designed to accelerate failures caused by sudden temperature transitions.
Typical failure mechanisms include:
- Solder joint cracking
- PCB delamination
- CTE mismatch
- Ceramic package cracking
- Connector fatigue
- Seal leakage
- Adhesive separation
- Plastic deformation
How to Select the Correct Chamber Capacity
When selecting a thermal shock chamber, engineers should consider:
- Specimen dimensions
- Product weight
- Required temperature range
- Number of samples per cycle
- Recovery time requirements
- Applicable testing standards
- Future production expansion
Selecting an oversized chamber may increase energy consumption, while an undersized chamber can reduce airflow uniformity and testing accuracy.
Why Choose TestEQ：
Expertise in high-end environmental testing systems
Stable performance under extreme thermal stress
Advanced airflow & thermal balance technology
Custom engineering for military, aerospace, and semiconductor standards
Energy-efficient design reducing operational costs
Optional Configurations：
LN₂ cooling system (-196°C) for ultra-low temperature testing
Remote monitoring & IoT integration
Large-volume chambers up to 12,000L
Semiconductor testing optimization (JEDEC compliant)
Custom control systems for precise temperature profiles
Meet standard:
GJB150.5A-2009 Temperature shock test
GB/2424.13-2002 Temperature shock test
GJB360B-2009 Temperature shock test
GB2423.1-2008/IEC6008-2-1-2007 Low-temperature test methods
GB2423.2-2008 High-temperature test methods
GBT 10589-2008 Technical conditions for low-temperature test chambers
GBT 11158-2008 Technical conditions and specifications for high-temperature test chambers
FAQ：
1.What is a three-zone thermal shock chamber?
It is a test system with high, low, and test zones, designed to rapidly transfer samples between extreme temperatures for reliability testing.
2.What industries use three-zone thermal shock chambers?
Aerospace, defense, automotive electronics, semiconductors, and high-reliability materials testing.
3.How fast can it change temperature?
Typically ≤3–10 seconds, depending on chamber configuration.
4.What standards does it comply with?
Supports MIL-STD-810, IEC 60068, JESD22, and other international testing standards.
5.How to choose a three-zone thermal shock chamber?
Key factors: temperature range, transition time, chamber capacity, standard compliance, and application type.
6: What is temperature recovery time in a three-zone thermal shock chamber?
Temperature recovery time refers to the period required for the test zone to return to the specified temperature after a thermal shock cycle. Faster recovery ensures more consistent test conditions, improves repeatability, and is especially important for semiconductor, aerospace, and automotive reliability testing.
7: How often should a three-zone thermal shock chamber be calibrated?
Calibration frequency depends on laboratory quality requirements and applicable standards. Most laboratories perform annual calibration, while facilities operating under ISO/IEC 17025 or other regulated quality systems may require more frequent verification to ensure temperature accuracy and uniformity.
8: Can a three-zone thermal shock chamber be customized for specific testing requirements?
Yes. Three-zone thermal shock chambers can be customized to meet specific testing needs, including chamber size, temperature range, specimen fixtures, cooling systems, automation, remote monitoring, and compliance with industry-specific standards. Custom configurations help optimize testing efficiency and accommodate unique product requirements.
Internal Linking Module
Recommended Equipment
Explore related thermal reliability test equipment to complete your environmental simulation system.
1. Rapid Thermal Cycling Chamber
A high-speed temperature change system designed for semiconductor, PCB, and automotive reliability testing with fast ramp rate control.
2. Thermal Shock Test Chamber (2-Zone)
Alternative dual-zone configuration for faster transfer-based thermal stress testing with simplified structure and lower energy consumption.
Test Standards
Understand the international standards this chamber complies with to ensure testing credibility and global acceptance.
1. IEC 60068-2-14 Thermal Shock Standard
International standard defining temperature change and thermal shock test methods for electronic components and materials.
2. JEDEC Thermal Cycling Standards Guide
Widely used semiconductor reliability standards defining thermal cycling stress conditions for IC, packaging, and solder joint reliability.
Resources
Learn more about testing principles, failure mechanisms, and reliability engineering knowledge.
1. Thermal Shock vs Thermal Cycling: Key Differences
Explains how thermal shock and thermal cycling differ in mechanism, application, and failure analysis outcomes.
2. Environmental Chamber Selection Guide
A practical guide for engineers and procurement teams to select the right environmental test chamber based on application and standards.
Applications：
Semiconductor devices: reliability testing and JEDEC compliance
Aerospace & defense components: MIL-STD environmental validation
Automotive electronics: ECUs, sensors, and modules
Military-grade equipment validation
Call To Action：
Need a Custom Thermal Shock Solution?
Whether you are validating semiconductor packages, automotive electronics, aerospace assemblies, or military equipment, TestEQ provides standard and fully customized three-zone thermal shock chambers designed to comply with IEC 60068, JESD22, and MIL-STD requirements.
Our engineering team can help you:
- Select the optimal chamber capacity
- Define the appropriate temperature profile
- Meet industry-specific compliance requirements
- Design custom fixtures and automation
"Request a custom thermal shock testing solution today" Our engineers will help you select the optimal chamber for your application.
We will contact you within 1 working day, please pay attention to the email with
the suffix "@test-eq.com".
We will contact you within 1 working day, please pay attention to the email with the suffix "@test-eq.com".
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