1. Technical Capabilities: Core Matching of Design and Production

Advanced Equipment and Processes

Equipment Configuration: Prioritize suppliers equipped with high-precision placement machines (supporting 01005 packages), X-Ray inspection devices, and laser drilling machines to ensure the precision of small components (e.g., BGA, QFN) and the ability to implement complex processes (e.g., HDI blind and buried vias).

Process Coverage: Confirm whether suppliers support high-frequency materials (e.g., Rogers), impedance control (±5% accuracy), and multilayer boards exceeding 28 layers, especially for high-demand scenarios like 5G communications and medical devices.

Design Support and Experience

DFM (Design for Manufacturability) Feedback: Quality suppliers proactively identify design flaws (e.g., insufficient line width, poor heat dissipation) to reduce prototype rework. For instance, one supplier improved first-pass yield from 60% to 95% by optimizing impedance matching.

Industry Cases: Prefer suppliers with experience in high-reliability fields such as automotive electronics and aerospace, as their expertise can mitigate technical risks.

2. Quality Systems: The Foundation of Stability

Certification and Testing Capabilities

  • Basic Certifications: ISO 9001 (Quality Management) and IPC-A-610 (Process Standards)
  • Automotive Electronics: IATF 16949
  • Medical Devices: ISO 13485

Testing Methods

  • AOI Coverage: >95%
  • X-Ray BGA void rate: ≤25%
  • 3D SPI for solder paste accuracy

3. Delivery and Cost Management

Standard Delivery Times

  • Double-sided boards: 5 days
  • Multilayer boards: 10-15 days
  • Expedited service: 48-hour capability

Cost Optimization

Annual purchase volume exceeding 100,000㎡ can negotiate tiered discounts (5%-8%) or introduce LDI technology to reduce film costs by 30%.

4. Service and Collaboration

Technical Support

  • 24-hour technical response
  • 48-hour replacement policy
  • SI and PI simulation analysis

5. Compliance and Environmental Responsibility

Environmental Standards

  • RoHS 2.0 compliance
  • REACH standards
  • Wastewater recovery rate: >80%
  • Energy consumption: 15% below industry average

Conclusion

A comprehensive supplier evaluation framework must consider technical capabilities, quality systems, delivery management, service support, and environmental compliance. This multi-dimensional approach ensures long-term sustainable partnerships in PCBA manufacturing.