Characteristics and Application of Lead - free Environmental Protection Paste
Article Source: Huizhou Electroloy Technology Co., Ltd.Popularity:2425issuing time:2017-12-30 17:08:33【SML】
Lead-free
environmentally friendly solder paste is in accordance with the IEC
halogen-free standards, the EU "RoHS" standards and the United States
IPC-TM-650 standards, the new high oxidation modified rosin resin and
composite anti-oxidation welding environmental protection technology. Selection
of low-oxidation rate of spherical solder alloy powder and high thermal
stability of the high thixotropic rheological paste environmentally
friendly flux, patented technology from the high-tech Paste mixer
refining. Suitable for electronic assembly SMT industrial production of various reflow high-precision welding.
Lead-free solder paste has the following characteristics:
(1) the melting point of 138 ℃
(2) good wettability, bright and uniform spot full
(3) Wuxi solder ball and tin bridge produced reflow
(4) long-term paste life, stencil printing long life
(5) Suitable for a wide process and rapid printing process
(6) excellent printability, eliminating the printing process of missing potholes and knot fast phenomenon
Solder
paste is a flux, one is to isolate the air to prevent oxidation, the
other to increase the capillary action to increase the wettability, to
prevent Weld, solder paste: white crystalline powder. Content of 99.0%, acid value 0.5mgKOH / g, mp 112 ° C soluble in ethanol, isopropanol. A no-clean solder paste for today's SMT production process. The
use of a very small amount of oxidation of lead-free alloys with less
active flux paste preparation, the viscosity can meet the printing and
point coating process, a wide range of applications.
