High-temperature testing is a reliability test conducted to simulate the high-temperature resistance of products during storage, assembly, and use. High-temperature testing is also the most commonly used accelerated life test. The purpose of high-temperature testing is to determine the adaptability and durability of storage and use of military and civilian equipment and parts when stored and operated under normal temperature conditions. Confirm the material's performance at high temperatures.
Application scope
The main scope of high and low temperature testing includes electrical and electronic products, their original components, and other materials. The stringency of the test depends on the high and low temperature temperatures and the duration of the test. High and low temperatures may overheat the product, affecting its safety and reliability, or even damage it, such as:

· Due to the different expansion coefficients of various materials, resulting in bonding and migration between materials

· Change material properties

· Decrease the electrical performance of components

· The elasticity or mechanical strength of the elastic element is reduced, shortening the service life of the product

· Accelerate the degradation and aging process of polymer materials and insulation materials, shortening the service life of products.

· The elasticity of flexible materials such as rubber is reduced and cracks occur;

· Increased brittleness of metals and plastics, leading to rupture or cracks;

· Make materials brittle. For example, plastics and steel are prone to brittle damage at low temperatures. The hardness of rubber materials increases and their elasticity decreases.

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method standards
Test standard reference: GB/T 2423.1, GB/T 2423.2, IEC 60068-2-1, IEC 60068-2-2, EN 60068-2-1, EN 60068-2-2, etc.
Test parameters
High temperature test: test temperature, test time, heating rate;
Performance impact
High temperature test: thermal aging, cracking, discoloration, softening, melting, expansion, or functional failure of materials;
Testing equipment and instruments

The purpose of the low-temperature test is to test whether the specimen can be stored and manipulated in a long-term low-temperature environment, and to determine the adaptability and durability of military and civilian equipment for storage and operation under low-temperature conditions. Physical and chemical properties of materials at low temperatures. The standard has regulatory requirements for pre-test treatment, initial test inspection, sample installation, intermediate inspection, post-test treatment, heating rate, temperature cabinet load conditions, and the volume ratio of the measured object to the temperature cabinet.

Failure modes of specimens under low temperature conditions: The parts and materials used in the product may crack, embrittle, have movable parts stuck, and change characteristics at low temperatures.

Effect of low temperature
1. Make the material hard and brittle;
2. The viscosity of the lubricant increases, the flow capacity decreases, and the lubrication effect decreases;
3. The performance of electronic components changes;
4. Water cooling and freezing;
5. The seal fails;
6. Material shrinkage causes mechanical structural changes.
Application scope
Low temperature testing is mainly used for scientific research, preservation of medical supplies, low temperature experiments and storage of biological products, ocean products, electronic components, chemical materials and other special materials.
method standards
GB/T2423.1-2008 "Environmental Testing of Electrical and Electronic Products Part 2: Test Method Test A: Low Temperature"
IEC 60068-2-1:2007 "Environmental Testing of Electrical and Electronic Products Part 2: Test Method Test A: Low Temperature"

About Us

Shenzhen LCS Compliance Testing Laboratory Ltd., abbr. for LCS, was founded in 2004 in Shenzhen, LCS is now growing into an independent comprehensive third-party institution which focuses on test & certification. Profound technical background and diligent working attitude decided LCS with an outstanding high starting point from the outset，pioneering spirit and consciousness of keeping pace with the times which predestined the thoroughly tempered course of LCS.

Our Labs

LCS Founding Members have engineering background and had gradually built up Safety Lab, EMC Lab, RF Lab, SAR & HAC Lab, Reliability Lab, Lighting Electrical Lab, LED Lighting Performance Lab, Energy Efficiency Lab, Electronic Cigarette Testing Lab, Chemistry Lab, BQTF, Environmental and Occupational Evaluation Lab, Battery Lab, Toy Lab, Textile Lab, Food and Food Grade Material Lab. The establishment of our comprehensive labs ensure our test and certification scope covers almost all fields, such as Reliability and Safety test, EMC test, Chemical Hazardous Substances test, Material Analysis, Food Contact Material test, Bluetooth Test & Certification, Environment and Occupational Health, Performance test of spare parts of Automobile and so on.

Authorization

Moreover, LCS won many authorized qualifications both domestic and overseas. LCS is recognized as IEC/ISO17025 laboratories accepted by CNAS and NVLAP, accredited by CPSC, CMA, accredited for CQC, ISTA, CBTL, SASO, SABS. Meanwhile LCS become laboratory authorized by TUV, BQTF issued by the SIG. LCS had also signed cooperation agreements with FCC, ISED, ETL, CEC, UL, E-Mark, CETECOM, KTC, SAA Approval and many other authoritative institutions, hence we can provide our clients with efficient and professional service for product test and certification.

Experience

Our RF experience ranges from WLAN (802.11b/g/n/a/ac), Wi-Fi 6E, Bluetooth (802.15.1), ZigBee (802.15.4), Z-Wave, UWB (802.15.3), WiMAX (802.16), SRD, DECT, RFID, NFC, GSM, WCDMA (+HSDPA/HSUPA), LTE, 5G (NR/VoNR/eMTC/eMBB/URLLC),UHF/VHF, WHDI, AM, FM, DAB, DVB, GPS, GNSS, COMPASS, GLONASS and more. The products we are mostly working with are basestations, client adapters, laptops, cordless phones, baby monitors, cellulars, radars, sensors, scanners, receivers, immobilizers, remote controls, etc. Modern products incorporate not often one, but a variety of co-existing technologies.

Welcome

LCS is a reliable party. With more than 20 years hands-on experience in the field of Radio, Telecom, EMC and Safety certification, including country approvals worldwide, we will guide you with our knowledge. You are very welcome!

We will be pleased to assist you with your questions or inquiries, please contact us.