Design Rules CheckWe incorporate a Design Rules Check (DRC) in our manufacturing and fabrication processes as a quality control test. For new orders, we initially address layout problems by using an automated testing machine to verify that the layout does not have routing, placement, or any other layout problems. Using the DRC, we compare the layout and the net list to PCB design limitations and the rules. It will verify part placement and trace routing to make sure there is no overlapping, untraced connecting pins, incorrect layer placements or other limitations that have been determined for routing widths and clearances. In addition, we use the DRC to ensure the PCB is capable of being manufactured. Any errors we find, we immediately contact the customer prior to commencing the production process.
Electrical Tests for Prototype PCBsOn small run and prototype PCBs, Fast Circuits provides the Flying Probe Electrical Test. Using the Flying Probe tester, we test the PCB to ensure it has no short or open circuits, as well as testing to verify that the PCB nets we manufacture correspond to your design. The Flying Probe tester possesses few limitations on access. It does not need test fixtures. It can test PCBs with almost an unlimited amount of nets. In general, the Flying Probe test will catch errors such that the failure rate of the PCBs is generally less than one percent.
Production TestingOn production orders, we use a "bed of nails" tester, which have long been used as a text fixture. It has many small and spring loaded pogo pins that are inserted into holes on an epoxy phenolic glass cloth laminated sheet. These are lined up with tooling pins, which connect with the PCB test points. Every one of the pogo pins will connect to the device of the PCB that is going to be tested. Upon initiating the device-under-test via the bed of nails tester, many separate test points will be connected for testing. This test ensures there are no shorted or opened circuits, and will also ensure the PCB nets correspond with the design nets. This test generally maintains the PCB failure rate to less than one-tenth of one percent.
Automated Optical InspectionsAutomated optical inspections (AOI) provide an internal quality check of the inside layers of PCBs with multiple layers. This type of inspection performs a vision scan of the PCB surface using scanners and/or hi def cameras so the entire area of the PCB can be checked. The primary advantage of AOI is that it is highly reliable and accurate and a more sophisticated type of testing than visual inspection testing. For a basic board inspection (one without components placed), AOI can test for the following failures:
- Line width out of rules specifications
- Spacing errors outside of rules specifications.
- Excessive amount of Cu.
- Missing pads when they are required
- Shorted circuit paths
- Traces or pads that were partially or fully severed.
- Holes that are broken out, which is usually caused by a hole that has been drilled beyond its target pad.
Quality Systems: ISO 9001:2008Fast Circuits Inc is an ISO 9001:2008 certified company. Our ISO quality system has the following features:
Drawn up by Fast Circuits' management, the quality policy articulates its quality vision and details our business and marketing strategies as it relates to our customer's requirements. All employees and management staff are familiar with the quality policy and adhere to its tenets and requirements. The quality policy has objectives that have quantified levels of measurement, which are used by our employees.
The quality system is documented with control data. We maintain files of this data that indicate how we sources materials and how products are processed. This type of documentation gives us the ability to easily determine, if necessary, any problems at its source. The quality system undergoes audits at regular intervals. Our quality team evaluates our quality processes to ensure they conform to quality standards and ensure its effectiveness.
The quality system documentation includes client information, customer feedback information about products, customer contacts, contractual documents, order information and customer complaint reports.
The performance of the quality system is reviewed periodically with audits and team member conferences. During these meetings, the team analyses the performance to determine whether the quality system is functionally according to the quality standard and the manner in which previous and future problems can be corrected. If it is not, improvements are suggested for implementation. All records, discussions and conferences on the effectiveness of the quality systems, actions proposed and implemented, are recorded and filed.
The procedures for correcting current or future non-conforming problems, whether they involve our suppliers, clients or internal ones, are documented. The quality standard directs us to ensure that any product that is identified as failed or non-functional is set aside and segregated away from the good products. No one can use the segregated products until the quality team can discover the reason the product is in a failed state. Our quality system guarantees that we will find the root cause(s) of any problem found. In addition, all information about failed products is documented in order to have a performance history record to improve the performance of our quality control.
- Fast Circuits Launches Flex Stocking, Inventory Program
- Fast Circuits Helps Cornell Students Build Underwater Robotics Vehicle
- Fast Circuits Rolls Out 2-in-1 PCB Solutions Service
- Fast Circuits Expands PCB fabrication Service with Custom Engineering Capabilities
- Gerber files in PCB Manufacturing
- How To Design Cost-Effective PCBs
- The Advantages of DFM rules
- Conformal Coating Services