Military Environmental ESS Test Temperature Cycling Chamber 10 ºC /Min

Military Quality Standard ESS Test 10 ºC /Min Rapid-Rate Thermal Cycling Chamber

1. Advantages of Temperature Cycling:

Many independent studies have been conducted analyzing the effectiveness of various types of ESS processes. Conclusive data has been compiled by many manufacturers of electronic assemblies supporting today's thinking that temperature cycling is the most effective type of screening process.

While it has been demonstrated that both temperature cycling and random vibration together is the most effective screen in terms of identifying latent defects, if a single screen is to be used, temperature cycling is considered to be the single most effective screen in identifying latent defects. According to the ESSEH guidelines, temperature cycling regularly detected an average of two-thirds more latent product defects than with random vibration alone, which is ranked second most effective in identifying defects.

Stress uniformity is without question the most important aspect of the screening process. Temperature cycling provides the additional advantage of a uniform stress environment when air flow across the product is tightly controlled. All areas of the product must be subjected to an equal amount of stress throughout the screen profile. Some other methods of screening do not offer this uniformity across the product

2. Design for the environment

The environment to which a product is subjected must be considered early in the design stage - not as an after-thought when you know you have a problem. The following points should be clearly defined early in the design stage: Safety, Operating Environment, Mode of Transport (land, sea, and air), and geographic considerations.

For an effective screen, you should set temperature extremes as far apart as possible. Keep in mind the temperature limitations of the components on the board. The minimum range between hot and cold should be 100°C.

The rate of change of air temperature impinging on the part is 5°C to 20°C/minute, with the emphasis again on uniformity across all products in the chamber.

Uniformity will be controlled by air velocity across the product, with a recommended minimum of 750 FPM

4. Equipment

It has been established that temperature cycling is an effective tool for improvement of the quality of manufactured products and associated reductions in field failures and their related cost to the manufacturer in both dollars and customer satisfaction.

There are three types of chamber design currently being used for ESS. Design selection is dictated by the temperature transition rate required.

a) Less than 10°C/min Traditional Design

b) 10°C/minute to less than 20°C/minute "Isolated Evaporator"

c) 20°C/minute and up Air-to-Air Thermal Shock

ABOUT KOMEG
 

Founded in 1990, dedicating in environmental test equipment for over 30 years, KOMEG Technology lnd Co., Limited, is famous for its KOMEG star brand of environmental test equipment in China and overseas.

KOMEG specialize in climatic test chambers, temperature humidity test chambers, thermal shock test chambers, walk-in chambers, aging test chambers and burn-in room, drying ovens, Altitude test chamber, salt spray testers, and medical laboratory equipment, etc. During the past decades, KOMEG cooperated with and served many enterprises like Gree, Konka, Samsung, LG, Hiconiecs, BYD, Magna International, TOYOTA, Amicell, Stankomet, Premier, Hitek, UL, SGS, Intertek, etc.

KOMEG factory is located in Dongguan Songshan Lake, National Hi-Tech Industrial Development Zone, covering an area of 5, 000 sqm, with over 100 skilled employees including 30+ R&D engineers. (40 minutes from Shenzhen Baoan Airport by car; and 90 minutes from Guangzhou Baiyun Airport by car)

KOMEG also has branch office in Shenzhen.

Our Philosophy
Born for quality, test for future.

Our Aim

Better idea, better design and better quality.

KOMEG keep striving for continuous innovation, releasing no less than 5 new designs each year.

Our strong R&D team and skilled engineers and workers are the key factors for our success.

No matter standard models or customized project, we have rich experience to realize customers' requirements, so that our customers worldwide can benefit more from us when working with Komeg.

Ensure to meet your specific test standards, all key components and parts are imported famous brand from all over the world.

Thats why Desay( Apples' battery supplier, KONICA MINOLTA, SENKO, Midea, TCL and Huawei are also among our long-term clients. With KOMEG top brand strength, renowned reputation domestic and overseas, our products are widely exported to Europe, America, Southeast Asia,  Africa, Oceania, etc. countries like Russia, Germany, Korea, Singapore, Brazil, etc.


Distributors welcomed, Inquire today to get your order started.