Indium Corporations Leo Hu, senior area technical manager East China, and Nordsons Jonas Chen, China Applications Manager of AXI Products, will co-present a joint paper on using solder-reinforced matrix preforms to increase reliability in power modules and the development of a novel X-ray algorithm to reduce false void detection at PCIM Asia, Sept. 9-11, Shenzhen, China.
In their presentation, Power Modules: Implementing Solder-Reinforced Matrix-Preforms for Increased Reliability & Unique Inline X-Ray Algorithms to Eliminate False Void Calls, Hu and Chen examine the benefits and cost-savings of using a solder-reinforced matrix-preform and how a unique X-Ray algorithm can enable 100% inspection of these traditionally challenging-to-inspect parts.
Cracking and solder layer delamination occurs faster in inhomogeneous solder joints due to stress concentration at thinner areas of the joint. Bondline control is, therefore, critical to prevent tilt and achieve a uniform solder joint. Unlike standard solder preforms and their higher cost of production due to necessary additional process steps, a solder preform engineered with an embedded reinforced matrix can achieve uniform solder bondline across the entire solder area, and eliminate all costs associated with the traditional wire spacer stitch and trim technique. Additionally, the innovative matrix design embedded in the solder significantly increases thermal cycling reliability by improving solder creep resistance and suppressing solder fatigue.
Non-destructive inspection of voids in solder joints is crucial in the production process of power modules. While the matrix within the solder preformand the multiple overlapping solder layers already present within power modulescan present a challenge, autonomous X-ray inspection is the ideal method to solve this inspection task. A special approach was developed that involves an algorithm identifying typical features on the image for the reconstruction. To enable void inspection, the cooling pins (on the backside of the baseplate) are removed during the reconstruction, so that they do not appear on the slice images. Furthermore, due to the presence of the matrix in the solder preform, an additional step is necessary: a unique algorithm identifies and masks the matrix completely, so that it can be excluded from the analysis, enabling stable void inspection.
후 씨는 2016년에 인듐 코퍼레이션(Indium Corporation)에 입사했으며, 현재 중국 쑤저우에서 근무하고 있습니다. 그는 반도체 패키징 분야에서 약 15년의 경력을 쌓았으며, 첨단 조립 기술 개발, 공정 개선 및 조립 소재 응용 분야의 베테랑입니다. 후 씨는 업계 선도적인 외주 조립 및 테스트(OSAT) 기업에서 공정 엔지니어, 프로젝트 엔지니어, 선임 R&D 엔지니어, 수석 엔지니어 등 다양한 직책을 역임했습니다. 그는 중국과학원에서 집적회로(IC) 공학 석사 학위를, 중국 톈진 난카이대학교에서 전자정보과학기술 학사 학위를 취득했습니다.
Chen joined the MATRIX team in 2012, before the Nordson acquisition. He is based in Shenzhen, China. He has nearly 10 years of experience with inline X-Ray inspection systems and is an expert in FATP (Final Assembly Testing), wire-bond, Power Hybrid inspection and in special applications. Chen has served MATRIX, and since 2015 Nordson, in many roles: he began as an engineer, he became a site leader afterwards and currently holds the position of Application Manager in China for the AXI products.
인디엄 코퍼레이션 소개
Indium Corporation은 전 세계 전자, 반도체, 박막 및 열 관리 시장에 최고의 소재 정제, 제련, 제조 및 공급업체입니다. 제품에는 솔더 및 플럭스, 브레이즈, 열 인터페이스 재료, 스퍼터링 타겟, 인듐, 갈륨, 게르마늄, 주석 금속 및 무기 화합물, NanoFoil 이 포함됩니다. 1934년에 설립된 이 회사는 중국, 독일, 인도, 말레이시아, 싱가포르, 한국, 영국, 미국에 글로벌 기술 지원 및 공장을 보유하고 있습니다.
인듐 코퍼레이션(Indium Corporation)에 대한 자세한 정보는indiumstg.wpenginepowered.com을방문하거나Jingya Huang에게 이메일을 보내 주시기 바랍니다. 또한, ‘From One Engineer To Another’(#FOETA)라는 저희 전문가들의 채널을www.linkedin.com/company/indium-corporation/또는@IndiumCorp에서 팔로우하실 수 있습니다.
About Nordson
The Test & Inspection division of Nordson is a global supplier of high-speed Autonomous X-ray Inspection systems (MATRIX AXI product line), available as inline machines and as inspection islands. The AXI systems are used to ensure the quality of critical electronic devices/components and electronic printed circuit boards. In addition, Nordson T&I supplies autonomous X-Ray inspection solutions for non-destructive testing of other non-electronic materials, such as batteries or medical parts, by using transmission (2D) and off-axis (2.5D) imaging and 3D computed tomography. The MATRIX AXI systems are a product line of Nordson Corporation (NASDAQ: NDSN), which also includes Manual X-Ray, Optical and Acoustic inspection systems of test and inspection products.
For more information about Nordson, visit www.nordson.com/en/divisions/matrix or [email protected].
About PCIM Asia
PCIM Asia, sister event of PCIM Europe in Nuremberg, Germany, offers unique opportunities in one of the fastest growing markets for power electronics. Established in 2002, PCIM Asia is the only specialized exhibition and conference platform in China for power electronics, intelligent motion, renewable energy, and energy management in the Asian market.
