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环氧基的PCB对无铅组装的兼容性
引用本文:丁志廉.环氧基的PCB对无铅组装的兼容性[J].印制电路信息,2006(4):44-51,70.
作者姓名:丁志廉
摘    要:综述了环氧树脂基的PCB与无铅化组装的兼容性问题。经过大量试验表明,常规的FR-4基材和双氰胺固化的高Tg基材是不能满足无铅化组装要求的,而采用酚醛固化的中等-Tg的环氧树脂基材是可能成为无铅化组装用基材的。同时,PCB制造过程也起着重要的作用。PCB设计和再(回)流焊的加热梯度也影响着无铅化的性能。

关 键 词:无铅化组装  双氰胺-固化环氧基材  常规FR-4  高Tg-FR-4  酚醛-固化环氧基材  再(回)流焊循环

Compatibility of Expoxy-based PCBs to Lead-free Assembly
Ding Zhilian.Compatibility of Expoxy-based PCBs to Lead-free Assembly[J].Printed Circuit Information,2006(4):44-51,70.
Authors:Ding Zhilian
Affiliation:Ding Zhilian
Abstract:This paper summarizes the compatibility of epoxy-based PCB and lead-free assembly .A large number oftest show the standard-FR-4 base material and dicy-cured epoxy material of high-Tg is not a base material for lead-freeassembly,phenolic-cured epoxy material have the potential to solve this problem.But PCBmanufacturing plays animportant role.PCB design and the heating gradient in reflow also influence the lead-free assembly performance.
Keywords:lead-free assembly dicy-cured epoxy base material standard-FR-4 high Tg-FR-4phenolic-cured epoxy base material reflow cyclis
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