pb-free是不含铅的意思。Pb是化学元素铅的符号pb-free是不含铅的意思
Impendingrnrestrictions on the use of lead (Pb) has resulted in a search for alternatives to Sn-Pb solderrnin the three aforementioned areas of electronic interconnection. While research andrndevelopment of both Pb-free solder pastes and Pb-free circuit board coatings has beenrnsubstantial, to ...
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Pb-free 20+ SOP ¥20.0003元>=100 个 深圳市银海芯科技有限公司 1年 -- 立即询价 查看电话 QQ联系 CL6012G3 CL6012G3 3571 PBFREE QFN 17+ ¥0.5158元1~199 个 ¥0.3439元200~299 个 ¥0.1774元>=300 个 深圳华光新科技术有限公司 4年 -- ...
Pb-free Pb-free
里面也有测铅,但展ROHS里的铅含量是限定量的,就是不超过1000PPM,之要不超就可以过ROHS而PB-free...
就制造环节看,传统的Sn/Pb焊料是造成电子设备中总含铅量的主要因素,目前为止国际上尚没有通用的无铅(Lead-free,或Pb-free)标准,可借鉴的一些规定有:管道焊接用焊料及助焊剂中铅含量应低于0.2wt%(美国),0.1wt%(欧洲);国际标准组织(ISO)提案:电子装联用焊料合金中铅含量应低于0.1wt%。现在,市场上已有许多无铅...
Pb是指金属元素—铅,Pb free意思就是无铅,该线路板采用无铅制程,由于铅是重金属,ROHS中规定铅及铅的化合物限制在1000PPM内。
“Lead-free (Pb-free)” or “Pb-free” to mean semiconductor products that are compatible with the current RoHS requirements for all six substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, Pb-...
Lead Free Solder Composition Differ from Composition of Leaded Solder. Tin (Sn) is Present in Both, Lead (Pb) is Not Present in Lead-Free