电子与封装
電子與封裝
전자여봉장
EIECTRONICS AND PACKAGING
2013年
12期
1-5
,共5页
丁荣峥%马国荣%宋旭峰%史丽英
丁榮崢%馬國榮%宋旭峰%史麗英
정영쟁%마국영%송욱봉%사려영
CQFN%热阻%气密性封装%结构强度%组装%可靠性
CQFN%熱阻%氣密性封裝%結構彊度%組裝%可靠性
CQFN%열조%기밀성봉장%결구강도%조장%가고성
CQFN%thermal resistance%hermetic package%SMT%reliability
阐述了高速、高性能集成电路所需高密度、高可靠的表面贴装型陶瓷封装,讨论了多层高温共烧陶瓷工艺如何设计与塑料封装QFN完全兼容,结合0.50 mm节距CQFN72外壳设计,就如何解决CQFN封装的散热、高频电性能、薄型封装的气密性和结构强度,以及封装电路的二次组装中助焊剂清洗不彻底、焊接层/焊点有空洞和桥连短路、焊点难检查和返工困难等问题进行了论述,为高密度、高性能、高可靠封装提供了新的封装结构和技术途径。
闡述瞭高速、高性能集成電路所需高密度、高可靠的錶麵貼裝型陶瓷封裝,討論瞭多層高溫共燒陶瓷工藝如何設計與塑料封裝QFN完全兼容,結閤0.50 mm節距CQFN72外殼設計,就如何解決CQFN封裝的散熱、高頻電性能、薄型封裝的氣密性和結構彊度,以及封裝電路的二次組裝中助銲劑清洗不徹底、銲接層/銲點有空洞和橋連短路、銲點難檢查和返工睏難等問題進行瞭論述,為高密度、高性能、高可靠封裝提供瞭新的封裝結構和技術途徑。
천술료고속、고성능집성전로소수고밀도、고가고적표면첩장형도자봉장,토론료다층고온공소도자공예여하설계여소료봉장QFN완전겸용,결합0.50 mm절거CQFN72외각설계,취여하해결CQFN봉장적산열、고빈전성능、박형봉장적기밀성화결구강도,이급봉장전로적이차조장중조한제청세불철저、한접층/한점유공동화교련단로、한점난검사화반공곤난등문제진행료논술,위고밀도、고성능、고가고봉장제공료신적봉장결구화기술도경。
Describes a high-speed, high-performance IC require high reliability high-density surface mount ceramic package, this paper discusses the multi-layer high-temperature co-fired ceramic technology to design CQFN compatible with plastic QFN, combined with 0.50 mm pitch CQFN72 design, on how to resolve CQFN package thermal conductivity, high-frequency electrical properties,thin package hermetic and tstructural strength, and IC assembly flux cleaning, solder layer voids or bridging, solder joint inspection and rework difficulties are discussed. For high-density, high-performance, high reliable package provides a new package structure, a new technical approach.