Quality is the cornerstone of every reliable electronic product. At Tecoo, we recognize that consistent quality control is essential to the performance and longevity of your devices. Our systematic approach to quality assurance ensures that every PCB assembly meets rigorous standards before it reaches your production line.

In this article, we walk you through Tecoo’s streamlined quality control process—from incoming inspection to final delivery—and highlight how our methods provide OEMs with confidence, compliance, and a competitive advantage.

The Importance of Quality Control in Electronics Manufacturing

Defects in PCB assembly can lead to operational failures, increased costs, and delays in time-to-market. This is especially critical in industries such as medical, automotive, and industrial electronics, where product reliability directly impacts safety and user experience.

Tecoo integrates quality control at every phase of manufacturing. Our process is designed to detect and resolve issues early, ensuring that every board performs as intended.

Key Stages of Tecoo’s QC Process

1. Incoming Material Inspection

We begin by verifying all components and materials:

• Authenticity and source of components
• Compliance with manufacturer specifications
• Physical condition and packaging

This prevents counterfeit or out-of-spec parts from entering production.

2. Automated Optical Inspection (AOI)

During solder paste printing and component placement, AOI systems quickly scan boards for:

• Solder bridging or insufficient solder
• Misaligned or missing components
• Incorrect part orientation

This automated step allows rapid feedback and correction during assembly.

3. X-Ray Inspection

For components with hidden connections such as BGAs and QFNs, we use X-ray imaging to inspect:

• Solder joint integrity beneath the component
• Voiding and alignment issues
• Internal layer registration in multi-layer PCBs

X-ray inspection ensures that even concealed solder joints meet quality standards.

4. In-Circuit Testing (ICT)

ICT checks electrical characteristics and validates:

• Shorts and open circuits
• Resistance, capacitance, and inductance values
• Basic functionality of semiconductors

This test is highly effective for catching defects in complex circuits.

5. Functional Testing (FCT)

We simulate real operating conditions to confirm that the assembled PCB works as designed. Tests include:

• Power-up and firmware verification
• Signal and communication tests
• Thermal and load performance

Functional testing ensures the board will operate correctly in its end application.

6. Final Audit and Packaging

Before shipment, every batch undergoes:

• Visual inspection under magnification
• Electrical re-testing of sample units
• Compliance check with shipping standards

We also provide customized packaging and ESD protection when required.

Compliance and Certifications

Tecoo adheres to internationally recognized standards, including:

• ISO 9001 (Quality Management)
• ISO 13485 (Medical Devices)
• IATF 16949 (Automotive)
• IPC-A-610 (Acceptability of Electronic Assemblies)

Our quality system is regularly audited and updated to reflect the latest industry requirements.

Why OEMs Choose Tecoo

• Full Traceability: Every component and process step is documented.
• Proactive Problem-Solving: We use real-time data to prevent recurring defects.
• Scalable Solutions: From prototypes to high-volume production, we maintain consistent quality.
• Transparent Communication: You receive detailed inspection reports and regular updates.

Partner with Tecoo for Quality You Can Trust

At Tecoo, we believe that quality should never be compromised. Our end-to-end QC process is designed to give you peace of mind and products you can rely on.

Whether you're developing a new prototype or scaling for volume production, Tecoo delivers the consistency and expertise your products deserve.

Interested in a manufacturing partner who never cuts corners on quality?
Reach out today to learn more about our capabilities or to request a competitive quote. Let Tecoo help you build with confidence.