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Shenzhen Yideyi Technology Limited Company 86-136-7006-7254 elva@ydypcba.com

Quality Control

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Shenzhen Yideyi Technology Limited Company Quality Control

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QC Profile

Our professional SMT factory has advanced equipments, such as the world-class stencil printing, SMT chip pick & place, solder reflow, and in-line testing and steel mesh manufacturing. AOI test machine and X-ray testing machines for quality check. All the boards will go through the most stringent tests

 

DRC Check
The Design Rules Check (DRC) is a very important step in PCB quality control. When we receive a new order from a customer, we will use an automated tool to verify that the layout does not have any specific placement, routing or other addressable layout errors.

 

Electrical Testing
Prototype Orders: We offer Flying-Probe E-Test for small volume and prototype orders. Your circuit board (PCB) is checked through a device called a Flying-Probe E-Tester. The Flying probe testers we use have few restrictions on access, require no test fixtures, and can test boards with virtually unlimited number of nets. The Tester will check for short circuits, open circuits and make sure the nets of the PCB we made is the same as the nets in your design. After testing is complete, the fail rate of your boards will be less than 1%.

 

Production Orders: We use Testing fixtures to test production orders. A bed of nails tester is a traditional electronic test fixture which has numerous pins inserted into holes in an Epoxy phenolic glass cloth laminated sheet (G-10) which are aligned using tooling pins to make contact with test points on a printed circuit board.

 

The fixture contains an array of small, spring-loaded pogo pins; each pogo pin makes contact with one node in the circuitry of the DUT (device under test). By pressing the DUT down against the bed of nails, reliable contact can be quickly and simultaneously made with hundreds or even thousands of individual test points within the circuitry of the DUT.

 

The Tester will check for short circuits, open circuits, and make sure the nets of the PCB we made is the same as the nets in your design. After testing is complete, the fail rate of your boards will be less than 0.1%.


AOI(Automated optical inspection)

 

We use an AOI to check the inner layers of multi-layers PCB. AOI visually scans the surface of the PCB. The board is lit by several light sources and observed by a scanner or by a number of high definition cameras. This enables the monitoring of all areas of the board.

 

AOI for a bare PCB board inspection will detect these features:

* Line width violations

* Spacing violations

* Excess copper

* Missing pads. I.e. a feature that should be on the board is missing

* Shorts circuits

* Cut traces or pads

* Hole breakage.( Breakout ) I.e. a drilled hole (via) is outside of its landing pad