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Environmental Reliability Test for Components

August 16,2023

Reliability test is an activity carried out to evaluate the functional reliability of a product during a specified life span under all intended use, transportation or storage environments. It is to expose the product to natural or artificial environmental conditions to experience its effect, to evaluate the performance of the product under the actual use, transportation and storage of the environmental conditions, and to analyze and study the degree of influence of environmental factors and its mechanism of action.


The Purpose and Necessity of Reliability Tests

By using various environmental test equipment to simulate high temperature, low temperature, high temperature and humidity and temperature changes in the climatic environment, accelerate the reaction of the condition of the product in the use environment, to verify whether it meets the expected quality objectives in R&D, design and manufacturing, so as to evaluate the product as a whole to determine the reliability life of the product. Discover product shortcomings through reliability test; Identification of defects in product processing and manufacturing processes; Put forward improvement suggestions and suggestions to help enterprises improve the process level, enhance product life and quality; Provide technical support for the R & D and production of enterprises, so as to create high-quality products and improve the market competitiveness of enterprises.

Salt Fog Test

Salt spray tests simulate the climate of marine or humid areas and are used to assess the resistance of products, materials and their protective layers to salt spray corrosion. There are two kinds of tests: salt spray test and alternating salt spray. It is often used for quality assessment and failure verification under special conditions.


Dustproof and Waterproof Test/IP Grade

Dustproof and waterproof test/IP rating is mainly for electronic products and equipment in outdoor use or harsh environment, the representation is IPXX, the first characteristic number represents the protection level to prevent access to dangerous parts and prevent the entry of solid foreign objects, and the second characteristic number represents the protection level to prevent water from entering.

IP protection level cases

1. Home appliances are generally IP20. If there is no special requirement, IPX0 is usually market. The X in IPX0 indicates that the first one is not considered.

2. General indoor lamps are IP20; Dust resistance is level 2 (to prevent the entry of objects up to 12 mm) and is not waterproof.

3. Outdoor lamps are generally IP44. To prevent objects larger than 1 mm from entering and sprayed water from entering.

4. IP54 for indoor spaces with large moisture and dust, such as bathrooms, kitchens, and canopies.

5. IP65 for outdoor floodlighting.

6. IP67 for buried lamps, while ensuring good water dispersion in the soil at the bottom of the lamps.

7. Underwater decorative lamps IP68.

The protection level commonly used in electronic communication products are

IP 57 (This requires dust proof and short-term immersion in water will not be affected),

IP 65 (This requires dust proof and splash-proof),

IP 67 (This requires dust proof and short-term immersion in water will not be affected).

Whether IP 65 or IP 67 is used depends on the application and the different test standards. IP 67 is not always better than IP 65. Components that meet the IP 67 standard do not necessarily meet the IP 65 standard.


Currently LIB test chambers can perform all these tests.

High Temperature Test

High temperature has many effects on the product, such as aging, oxidation, chemical changes, thermal diffusion, electromigration, metal migration, melting, vaporization deformation, etc., usually every 10 °C rise in the surrounding environment, the product life will be reduced to a quarter; When the ambient temperature rises by 20 °C, the product life will be reduced by half, and the product life follows the "10 °C rule", so the high temperature test is the most commonly used test, used for the screening of components and the whole machine, aging test, life test, accelerated life test, and plays an important role in the verification of failure analysis.

Test range:

UV Light Aging Test

It is used to simulate the destructive effect of sunlight, humidity and temperature on materials; Material aging includes fading, loss of light, loss of strength, cracking, peeling, chalking and oxidation.

Test range: UVA340/UVB313/UVA351


Low Temperature Test

Low temperature has many effects on products, such as embrittlement, icing, viscosity increase, curing, mechanical strength reduction and physical shrinkage, etc., low temperature test is used to assess the adaptability of products stored and used in low temperature environment, often used in the development stage of product type test, component screening test, etc.

Test range: 0°C~ -70°C

Thermal Shock Test

The purpose of the temperature shock test is to confirm changes in product characteristics and failure problems due to different coefficients of thermal expansion of dissimilar materials that make up components in a short period of time. These changes can be observed by rapidly alternating exposing components to ultra-high and ultra-low temperature test environments. Thermal and cold shock is different from environmental simulation test, which is to find potential faults that are difficult to find at room temperature through hot and cold temperature shock.

Thermal Shock Test Chamber is a necessary test equipment for metal, plastic, rubber, electronics and other material industries, used to test material structure or composite materials, in an instant through extremely high temperature and extremely low temperature continuous environment to endure the degree, in the shortest time to detect the test sample due to thermal expansion and contraction caused by chemical changes or physical damage.

Test range: temperature: -75~220°C

Conversion time:

Rapid Temperature Change Test

Rapid temperature change is a temperature change that specifies the rate of temperature change, often simulates the regional environment with a large temperature difference between day and night, and can also be used for life test to evaluate the appearance, mechanical properties and electrical properties of components or products.

Test range: Temperature: -70°C~150°C

Temperature change rate 10~25°C/min

Alternating Damp Heat Test

Alternating humid heat is to simulate the environment of tropical rainforests, determine the adaptability of products and materials in temperature changes, use and storage when condensation on the surface of products. It is often used for life test, evaluation test and comprehensive test.

Test range: temperature: -70 °C ~ 180 °C humidity: 5% ~ 98%

Constant Temperature and Humidity Test

The influence of humidity accounts for more than 40% of the cause of product failure, so humidity test is essential in environmental test. It is often used in life test, evaluation test and comprehensive test, and plays an important role in failure analysis. Especially for products containing resin materials, this test is necessary during product development and quality evaluation. The double 85 that is often made refers to a temperature of 85°C and a humidity of 85%RH.

Temperature/humidity environment,

Temperature: -70 °C ~ 180 °C humidity: 5% ~ 98%

Gas Corrosion Test

Gas corrosion is mainly used in contact points and connectors, and the evaluation standard after the test is the change of contact resistance, followed by the change of appearance. The main corrosive gases are sulfur dioxide, hydrogen sulfide, nitrogen dioxide, chlorine, and one or more gases can be selected for test according to the use environment.

Test range: SO2/ H2S/ NO2/Cl2

Concentration: 0.01~100ppm;

Temperature: 0°C~90°C;

Humidity: 10%~98%


Altitude Test

Altitude Test chamber is mainly used in aviation, aerospace, information, electronics and other fields to determine the environmental adaptability and reliability test of instrumentation, electrical products, materials, parts and components and equipment under low pressure, high temperature and low temperature single or simultaneous action.

Test range:

pressure: normal pressure ~ 10KPa

temperature: normal temperature ~ 200 °C

Ozone test

Ozone test is suitable for test the ozone aging resistance and aging crack test of non-metallic materials and organic materials (such as coatings, paints, rubber, plastics, and their products) of rubber products.

Test range: concentration: 0~500pphm

temperature: room temperature ~ 50 °C

Highly Accelerated Stress Test(HAST)

The Highly Accelerated Stress Test adopts high pressure and high humidity conditions to assess the comprehensive impact of electronic devices such as semiconductor integrated circuits packaged in plastic packaging, and is to evaluate the ability of electronic products to withstand humidity and heat by highly accelerated test methods, and is often used for product development, quality evaluation, and failure verification.

Test range:

temperature: 105~142.9 °C

humidity: 75%~100%

pressure: 0.02~0.186Mpa

LIB test chambers

With over 10 years of experience, LIB INDUSTRY provides excellent services to many component suppliers with the testing and certification they need to enter global markets .Many major suppliers of components rely on LIB INDUSTRY as their trusted partner to ensure the overall safety and performance of their products. We provide a lot of test chambers and Turn-key solutions to assess whether their components meet industry standards and regulatory requirements in almost every major market in the world. We have relevant experts and service center around the world to provide local support for your needs.

What kind of environmental test do you need for you products?

Please contact us now.

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