열유동 해석을 통한 리플로우 솔더링공정 중 인쇄회로기판의 열분포 특성에 관한 연구
A Study on the Thermal Distribution of PCB in the Reflow Soldering Process with Thermal-Air Flow Simulation
Recently, Soldering of attaching electronic components(IC chip, Memory Board, etc.) on printed circuit board(PCB) is performed for reflow soldering process, which saves the process time and cost. On the other hand, the reflow soldering process has a bad effect on the thermal response of PCB. It may cause serious damages to the PCB, for example warpage of PCB and disconnection of copper patterns in PCB. It is important to predict the thermal response of PCB during the reflow soldering process in order to avoid serious damages of PCB. As the result, this study is performed to understand the mechanism of a reflow equipment and to analyze factors of thermal imbalance of PCB which is affected by the air flow, the interaction between inner temperature of a reflow equipment and the coefficient of thermal conduction of FR-4&BT, the copper patterns of PCB, and so on. This study is performed to predict the thermal response of PCB by the factors of thermal imbalance which was simulated using the CFD tool ICEPAK. The results of this study can be used in minimizing the thermal imbalance of PCB by an optimally designing the PCB and reflow equipment conditions.
목차
Abstract 1. 서론 2. 리플로우장비와 PCB 2.1 리플로우장비의 제원 2.2 PCB의 구조 및 물성치 3. 해석방향과 모델링 3.1 해석방향 3.2 모델링 4. 열분포의 특성고찰 4.1 내부의 공기 유동장 4.2 내부의 온도장 4.3 PCB의 열분포 5. 결론 참고문헌
키워드
Reflow SolderingCopper P atternThermal response of P CB
저자
이공희 [ Lee, Gong Hee | LIG 넥스원㈜ 구미연구소 기술2팀 연구원 ]
교신저자
윤의열 [ Yoon, Ui Yeol | LIG 넥스원㈜ 구미연구소 기술2팀 주임연구원 ]
이승준 [ Lee, Seung Jun | LIG 넥스원㈜ 구미연구소 기술2팀 수석연구원 ]