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Supplier Quality Requirements

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The following Supplier Quality Requirements will apply unless otherwise agreed.

Certificate of Conformity

When stated on the Purchase Order:A signed Certificate of Conformity shall accompany each shipment and contain the following information: Supplier name, Purchase Order Number, Part Number, Revision, Quantity, Special Processes, Date, Authorized Signature, Title and Statement Certifying Product Compliance and Traceability as applicable.

Quality System

The Supplier shall maintain an effective Quality Management System in accordance with the requirements of ISO 9001, AS9100 or equivalent that provides a means of ensuring that products conform to specified requirements.

Right of Access

Right of access of Sierra Circuits authorized representatives, their Customer and Regulatory Authorities to the applicable areas of all facilities, at any level of the supply chain, involved in the order and to all applicable records.

Control of Quality Records

Where applicable, records related to the manufacture and/or process operations, including Inspection and Test are to be retained by the Supplier and made available on request for verification by Sierra Circuits, our Customer and Regulatory Authorities. Unless otherwise specified the period of retention shall be for a minimum of ten years.

Non-Conforming Product

The Supplier shall obtain written approval from Sierra Circuits prior to the supply of any Non-conforming material. The Supplier shall obtain Sierra Circuits approval for non-conforming product disposition. The Supplier shall notify Sierra Circuits of any Non-conforming material or products discovered after delivery so that appropriate corrective action can be taken.

Counterfeit Component Prevention

The Supplier shall have a process to ensure counterfeit components are not supplied to Sierra Circuits.

Control of Special Processes

The Supplier and any Sub-Tier Suppliers used shall be Sierra Circuits and/or Customer approved for any process considered to be a Special Process.

Changes in Product / Process Definition / Circumstances

The Supplier shall notify Sierra Circuits of changes in Product and/or Process, changes of suppliers, changes of manufacturing location and where required obtain Sierra Circuits approval. The Supplier shall inform Sierra Circuits of changes to its Certification, Registration and Accreditation status and any other changes that may affect Quality such as change of ownership.

Sub-tier Suppliers

When the Supplier sub-contracts a process or requirement to a Sub-tier Supplier the applicable requirements must be flowed down to that supplier. Approval of a Sub-tier Supplier by Sierra Circuits does not relieve the Supplier of the responsibility for assuring that work performed or products supplied by the Sub-tier Supplier are in accordance with specification requirements.

First Article Inspection

When agreed, the Supplier shall provide Sierra Circuits with a First Article Inspection Report (FAIR). This is required for the first batch produced from a new or modified drawing, after a change in the manufacturing process, or as directed by Sierra Circuits. A First Article Inspection is a representative sample from the batch and shall be 100% inspected for conformance to requirements.

Performance Monitoring

Sierra Circuits will monitor supplier performance based on On Time Delivery and product Quality.

Special Requirements, Critical Items or Key Characteristics

Sierra Circuits will identify, either within the Purchase Order or accompanying documentation any special requirements, critical items or key characteristics that need to be controlled and agree methods of doing so when applicable.


The main point of contact for queries regarding the order is the Buyer identified on the Purchase Order who will redirect queries as necessary.

Supplier’s Employee Contribution to Product

The supplier should communicate to their employees their contribution to:

  • Product or Service Conformity.
  • Product Safety.
  • The importance of Ethical Behavior (Please refer to Supplier Code of Conduct-QAS-006-05).

Download Our Complete Supplier Quality Requirements Here

Sierra Circuits is
headquartered in Silicon Valley.
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our 70,000 sqft facility,
located at 1108 West Evelyn Avenue
in Sunnyvale, California.
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We can help you plan your project from design to assembled board.

Manufacturing Equipment at Sierra Circuits

Our 70,000 sqft state-of-the-art campus in the heart of Silicon Valley contains the most advanced equipment required for the manufacture and assembly of your PCBs. Whether you’re looking for standard quick turn PCBs or boards with the tightest tolerances, made from exotic metals, there’s a reason Sierra Circuits leads the industry in quality and performance.

PCBs manufactured and assembled in the United States

Turn-times as fast as 1 day.

Sierra Circuits can manufacture your PCB and have it expedited to you within 24 hours.

Full turnkey boards, with assembly and components in as fast as 5 days.

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Call us: +1 (800) 763-7503
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