PCBA 솔더 페이스트 검사(SPI): 리플로우 전 SPI가 감지하는 결함과 중요성

Solder paste inspection (SPI) in PCBA is an essential quality control step executed immediately after stencil printing and prior to component placement and reflow.

What SPI Catches Early

• Insufficient solder paste volume on pads
• Excessive solder paste creating bridging risk
• Offset deposits impacting component alignment
• Clogged stencil apertures causing missing deposits

Combining SPI with AOI and Testing

SPI verifies pre-reflow print quality. It should be combined with AOI inspection post-reflow, alongside ICT or Functional Testing. Compare inspection methods in our ICT vs FCT vs AOI guide.

To discuss your PCBA quality control scope, please reach out via our contact page.