Samson, M. and Balahadia, F. 2025. Leveraging Defect Trend Analysis for Sustainable Printed Circuit Board and Assembly (PCBA) Quality Assurance: A Low-Cost Portable Smart Inspection Solution for Small-Scale Electronics Manufacturers. Isabela State University Linker: Journal of Engineering, Computing and Technology. 2, 2 (Dec. 2025), 1–14. DOI:https://doi.org/10.65141/ject.v2i2.n1.