最新国产成人综合在线观看-最新国产v亚洲v欧美v专区-最新更新国内自拍视频-最新高清无码专区-麻豆成人-麻豆按摩

Solder Preforms
SOLDER PREFORMS
Lead-free Solder Preforms

At present, there are many kinds of lead-free solders with ever-changing alloys. The alloy composition includes binary system, ternary system and polynary system.??

?

Generally, most of them are composed of Sn, with appropriate addition of Ag, Zn, Cu, Sb, Bi, In and other metallic elements. With the different alloys, the properties of solders can be optimized, then to get an ideal mechanical, electrical and thermal properties.?

PRODUCT SELECTION
DETAILED INTRODUCTION
PRODUCT LIST

產(chǎn)品特性與優(yōu)勢(shì)

·??Good Mechanical Properties

·? Superior electrical conductivity

·? High thermal conductivity

?


Typical Products

Sn-Ag-Cu Preforms

Sn-Ag-Cu (SAC) is the most common alloy in soldering electronics. Such as those alloys whose melting point is around 217℃, like SAC105(Sn98.5Ag1Cu0.5), SAC305 (Sn96.5Ag3Cu0.5)、SAC387(Sn95.5Ag3.8Cu0.7) and SAC405(Sn95.5Ag4Cu0.5) are usually used in reflow, wave and manual soldering.?

?

Among above, SAC305 are more wildly used. Compared with Sn63Pb37, it has better performance on stiffness, tensile strength, yield strength, shear strength, impact strength and creep strength;? compared with Sn-Cu/Sn-Ag preforms, it’s wetting properties are better.

PRODUCT LIST
Solid Line
°C
Liquidus
Eutectic Alloy
Density
g/cm3
Resistivity
μΩ.m
Thermal Conductivity
W/m.K
Thermal Expansion Coefficient
10-6/℃
Tensile Strength
Mpa
/ / 138 8.56 0.383 19 15 55.16
138 140 / 8.57 / / / /
217 227 / 7.32 0.133 60 / 40
217 218 / 7.37 0.132 58 21 50
217 220 / 7.4 0.132 57 22 48
217 220 / 7.4 0.132 62 / 51.5
217 218 / / / / / /
/ 221 / 7.37 0.108 33 30 39
221 240 / 7.4 0.137 / 23 55.2
217 220 / / / / / /
217 227 / / / / / /
235 240 / 7.25 0.145 28 31 40.7
返回頂部
主站蜘蛛池模板: 亚洲天堂2017无码 | 东北成人社区 | 国内精品乱码卡一卡2卡三卡 | 泷泽萝拉首部av | 国产精品视频yy9099 | 国产午夜视频在线 | 国产真实夫妇交换视频 | 狠狠干狠狠色 | 麻豆官网入口 | 国产精品欧美亚洲 | 日本无码毛片一区二区手机看 | 忘忧草在线影院www日本 | 老师你奶真大下面水真多 | 亚洲区欧美日韩综合 | 毛片免费大全 | 蕾丝边娱乐网 | 澳大利亚剧满足在线观看 | 神马影院午夜伦理限级 | 国产精品久久久久久免费字体 | 国产麻豆精品人妻无码A片 国产麻豆精品久久一二三 国产麻豆精品传媒AV国产在线 | 亚洲 天堂 欧美 日韩 国产 | 国产精品麻豆高潮刺激A片 国产精品麻豆a在线播放 | 囯产精品久久久久久久久蜜桃 | 公开超碰在线视频 | 国产偷国产偷亚洲高清人乐享 | 亚洲黄色成人 | 亚洲国产日韩a精品乱码 | 2020久久精品永久免费 | 伊人国产在线观看 | 亚洲黄色在线播放 | 伦理片 qvod 伦理片 a在线线版韩国 | 古月娜下面好紧好爽 | 伦理片在线线手机版韩国免费6 | 污污内射久久一区二区欧美日韩 | 日韩欧无码一区二区三区免费不卡 | 午夜理论片日本中文在线 | 成人综合在线视频免费观看完整版 | 97精品国产自产在线观看永久 | 浪货嗯啊趴下NP粗口黄暴 | 亚洲伊人成综合人影院 | 在线观看日本污污ww网站 |