Home  >  Quality  >  Control Plan
Quality policy
Emphaszie products Performance, quality, delivery, safety and service to meet customer's requirements and win compliments from customers.

Quality commitment
ADDA all stratums of supervisors ensure that all works effectively comply, perform and maintain with ADDA quality system to meet ISO/TS 16949 international quality standards.

Quality goal
Ensure product quality that satisfies customers.
Products meet with internationalization standards.
Continue improvements to achieve zero defects.

ADDA Policy on Conflict Minerals
Conflict minerals (tin, tantalum, tungsten and gold, or “3TG”) originating from the Democratic Republic of the Congo(DRC) or adjoining countries are mined and sold, under the control of non-state armed groups, human rights violations and labor abuses in the region.
ADDA supports and complies with the Conflict-Free Sourcing Initiative (CFSI) legislation and makes policy as follows:
1. ADDA requires our suppliers and their supply chains to commit to comply with the conflict free minerals requirements.
2. ADDA has conducted supplier’s survey since 2012, using CFSI Conflict Minerals Reporting Template (CMRT), to assure conflict minerals used in products supplied to ADDA are conflict free.
3. ADDA encourages our suppliers and their supply chains to sourcing 3TG from compliant smelters and refiners on the Conflict-Free Smelter Program (CFSP) conflict-free list.

MTBF (Mean Time Between Failure)
MTBF is the average frequency with which a product fails, the average time between failure or the length of time a product is expected to work without failure.
For example: Notebook
MTTF (Mean Time To Failure)
MTTF is a basic measure of reliability for non-repairable systems. It is the mean time expected until the first failure of a piece of equipment.
For example: Fans’ characteristics
CL (Confidence Level)
For example: MTBF is 3000 hours, 90% confidence Level. Each time of test observation value is MTBFi, which means 90% of MTBFi value will be 30000 hours above.
L10 (Life 10)
It is to sample one lot of fans for life test and when the failure accumulates to 10% of time, the L10 temperature’s value is equal to MTTF temperature 1/9.5 time.
MTBF (mean time between failures) is the expected time between two successive failures of a system. Therefore, MTBF is a key reliability metric for systems that can be repaired or restored such as airplanes and cars. MTTF (mean time to failure) is the expected time to failure of a system. Non-repairable systems can fail only once such as fans and tubes. Therefore, for a non-repairable system, MTTF is equivalent to the mean of its failure time distribution.
When a life accelerated test is done within 70 degrees, 30000hours (CL 90%), MTTF/MTBF value is a product’ life expectancy, not guarantee all products’ life 100% to be achieved.

‧ADDA Fan Life Test_071023.ppt