Quality & Reliability


Quality is designed in—from product inception to delivery.

AOS applies total quality management in every part of our business process.

Our Philosophy

We focus on:

  • Customer Satisfaction: AOS places customer satisfaction first because we know our success depends on our ability to satisfy our customers
  • Continuous Improvement: All AOS employees understand we must continue to improve our competitive advantage over competitors
  • Total Participation: Every level of the company participates in building the quality of products and services
Quality Management System
Quality Management System

Through our unique quality improvement initiative, AIMQ (AOS Integrated Manufacturing Quality), the quality and reliability are designed in our products and manufacturing is strictly controlled to ensure that the performance of our products conforms to the desired quality and reliability as determined at design stage.

Quality in Design
Quality in Design

The DFSS (Design for Six Sigma) methodology is adopted in the design and development of our new products and processes, with the goal to have Quality designed from the start so that the variability of the critical parameters, which were dictated by customers' requirements, are optimized for predictive product performance, manufacturability, and reliability.

Quality in Manufacturing
Quality in Manufacturing

The quality management system of AOS and our key subcontractors is in compliance with the SSQA requirements. SSQA stands for Standardized Supplier Quality Assessment, which is a set of world class quality standards developed by SEMATECH.

Our dedicated foundry and subcontractor management teams work closely with their respective foundries and subcontractors to monitor the quality of our products and ensure that manufacturing of our products is in strict compliance with the relevant process control and monitoring procedures and product requirements.

Product Reliability Reports

Green Commitments

Our goal is to provide you with environmentally friendly products that meet regulatory requirements and your expectations/requirements on hazardous substances.

Green Commitments

Our goal is to provide you with environmentally friendly products that meet regulatory requirements and your expectations/requirements on hazardous substances.

RoHS Directive

On the Restriction of the use of certain Hazardous Substances in electrical and electronic equipment) and its amendments

What is the requirement of RoHS Directive?

The EEE equipment put on the EU market, the following substances are restricted to use and don’t exceed the Maximum Concentration Value (MCV) by weight in homogenous material except for some exemption applications:

  • Cadmium (Cd) and its compounds = 100ppm
  • Lead (Pb) and its compounds = 1000 ppm
  • Mercury (Hg) and its compounds = 1000 ppm
  • Hexavalent Chromium (Cr6+) and its compounds = 1000 ppm
  • Polybrominated Biphenyls (PBBs) = 1000 ppm
  • Polybrominated Diphenyl Ethers (PBDEs) = 1000 ppm
  • Bis(2-ethylhexyl) phthalate (DEHP) = 1000 ppm
  • Dibutyl phthalate (DBP) = 1000 ppm
  • Benzyl butyl phthalate (BBP) = 1000 ppm
  • Diisobutyl phthalate (DIBP) = 1000 ppm

What has AOS done to meet RoHS requirements?

Starting in August 2004, we began converting our products to RoHS compliance and achieved RoHS compliance conversion in July 2005. We continue to follow the RoHS update/amendments, to search/assess alternative materials for our customers' further “Green” products.

View RoHS Compliance Declaration >

Does AOS have any plan in place to remove the RoHS exemption application?

We applied RoHS exemption 7(a): “Lead in high melting temperature type solders (i.e. lead-based alloys containing 85% by weight or more lead” in some power management devices, used as 1st level internal connection (Die bonding, Clip bonding), to achieve unique properties, such as the high melting point and thermal conductivity.

View the Exemption Application Explanation >

REACH Regulation

(Registration, Evaluation, Authorization and Restriction of Chemicals)

What is the requirement of REACH regulation?

REACH is a regulation of the European Union, which is adopted to improve the protection of human health and the environment from the risks posed by chemicals.

In principle, REACH applies to all chemical substances, not only those used in industrial processes but also in our day-to-day lives.

REACH managed the chemicals by the ways of Registration, Evaluation, Authorization, and Restriction with specific conditions of Article, Preparation, and Substance put on the EU market.

What has AOS done to meet the REACH requirement?

AOS products are articles defined in REACH and do not release substances under their regular use. Suppliers of the article should provide recipients with information on SVHC candidates if products present above a concentration limit of 0.1% on an article level. In addition, AOS products are required to meet REACH Annex XVII requirement (restricted substance under specific application).

We have reviewed our products’ BOM and obtained information from our supply chain along with SVHC candidates’ certificate.

View REACH Declaration >

Green Product

(Halogen Free/Low Halogen)

What is the requirement of Green?

More and more downstream users have required to low halogen/halogen free products, and industrial associates published the industrial standards for low halogen/halogen free definition, such as IEC 61249-2-21, JS-709, IPC 4101B, and JPCA-ES01.

AOS defined Green (Halogen free/Low Halogen) listed below with the applied scope and typical purpose for all substances as: resin, rubber, organize materials, used as flame retardant.

Substance Limitations on homogenous material level
Bromine < 900 pm
Chlorine < 900 pm
Total Bromine and Chlorine < 1500 ppm
Antimony < 900 ppm

What has AOS done to become a greener Company?

In 2010, all of our packages were converted to Green packages. Larger packages remain non-halogen free versions, depending on customers’ demand.

Adding the suffix “L” to part numbers is used to distinguish Green devices from non-halogen free devices. For example, AOT10N60L is a green version device, and AOT10N60 is a non-halogen free device.

View AOS Green Policy >

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