Strengthening PCB Quality Before Shipment
When customers receive a batch of PCBs, they expect both electrical integrity and consistent workmanship. Solder mask condition, surface cleanliness, and readable markings are all part of that expectation.
To better control PCB appearance quality, Shenzhen Yifang Electronics Co., Ltd. has added a new Automated Visual Inspection (AVI) system to its factory.
This investment supports our ongoing work to identify visible defects before shipment and improve consistency in the inspection process.
What Is AVI in PCB Manufacturing?
Automated Visual Inspection uses cameras, controlled lighting, and image-processing software to inspect the visible features of a PCB.
For finished bare boards, inspection can cover features such as solder mask, surface finishes, silkscreen markings, pads, and holes. The inspection scope depends on the equipment, board design, and inspection settings. tw.gardien.com
The system flags potential issues for evaluation against the agreed acceptance criteria. Effective inspection therefore requires suitable settings and proper review of the results.
What Appearance Issues Can AVI Help Identify?
Depending on the system configuration, AVI can help identify visible issues such as:
- Surface scratches or contamination.
- Missing or damaged solder mask.
- Discoloration or other surface irregularities.
- Missing, incomplete, or unclear silkscreen markings.
These are examples of inspection targets, rather than a guarantee that every system detects every defect. Detection capability varies with lighting, image resolution, surface finish, and the inspection program. HDI Holes
Why Is Visual Inspection Needed After Electrical Testing?
Electrical testing and visual inspection answer different questions.
Bare-board electrical testing checks connections that should conduct and isolation between circuits that should remain separate. It helps identify electrical defects such as open circuits and short circuits. HIOKI
Visual inspection evaluates observable surface conditions and workmanship. A board may pass its electrical tests while still having an appearance issue that needs review, such as unclear markings or surface contamination.
| Inspection method | Main purpose |
|---|---|
| Electrical testing | Check circuit continuity and isolation |
| AVI | Check visible PCB features against defined inspection criteria |
| Quality review | Evaluate flagged conditions and determine the appropriate action |
Together, these checks provide a more complete assessment of the finished PCB.
How Does This Investment Support Our Customers?
For PCB buyers, consistent inspection supports clearer quality decisions before boards move into assembly.
Our new AVI system is intended to strengthen three areas:
More consistent appearance checks
Automated inspection helps standardize repetitive visual checks across production batches.
Identification of issues before shipment
Flagging potential defects gives the quality team an opportunity to review them before delivery.
Better alignment with customer requirements
Appearance expectations should be defined alongside electrical and manufacturing requirements, especially when a project has specific requirements for markings, solder mask, or visible surfaces.
The equipment supports the inspection process. Its value comes from combining suitable inspection settings with clear acceptance criteria and responsible quality decisions.
Discuss Your PCB Quality Requirements with YIFANG
YIFANG provides PCB manufacturing and PCBA assembly services, supporting projects from prototypes to production orders.
If your project has specific appearance requirements, please share them with your Gerber files and manufacturing specifications. Reference images and clearly stated acceptance criteria can help us understand what matters most to your team.
Contact us to discuss your next PCB project.
Website: https://yifangpcba.leapzii.com/