Solder Joint Inspection and Measurement System, for both pre and post reflow applications
Technical Library | 2016-01-12 11:05:28.0
The electronic industry is currently very interested in low temperature soldering processes such as using Sn/Bi alloy to improve process yield, eliminate the head-in-pillow effect, and enhance rework yield. However, Sn/Bi alloy is not strong enough to replace lead-free (SAC) and eutectic Sn/Pb alloys in most applications. In order to improve the strength of Sn/Bi solder joints, enhance mechanical performance, and improve reliability properties such as thermal cycling performance of soldered electronic devices, YINCAE has developed a low temperature solder joint encapsulant for Sn/Bi soldering applications. This low temperature solder joint encapsulant can be dipped, dispensed, or printed. After reflow with Sn/Bi solder paste or alloy, solder joint encapsulant encapsulates the solder joint. As a result, the strength of solder joints is enhanced by several times, and thermal cycling performance is significantly improved. All details will be discussed in this paper.
Technical Library | 2010-04-29 21:40:37.0
The purpose of this paper is to investigate the effects of reflow time, reflow peak temperature, thermal shock and thermal aging on the intermetallic compound (IMC) thickness for Sn3.0Ag0.5Cu (SAC305) soldered joints.
Used SMT Equipment | AOI / Automated Optical Inspection
Offered systems: 2 x Configurations, consisted from: M22XDL460 AOI ,Power Mac G5 PC, Monitor 17” Vantage: 2006 Condition: good. Marantz Aoi Systems •Automatic Optical Inspection of PCB’s •Inspects: SMT & THT Components (presence, type, polari
Used SMT Equipment | AOI / Automated Optical Inspection
Offered systems: 2 x Configurations, consisted from: M22XDL460 AOI ,Power Mac G5 PC, Monitor 17” Vantage: 2006 Condition: good. Marantz Aoi Systems •Automatic Optical Inspection of PCB’s •Inspects: SMT & THT Components (presence, type, polari
Technical Library | 2024-06-23 21:57:16.0
Two extremes of reflow time scale for copper pillar flip chip solder joints were explored in this study. Sn-2.5Ag solder capped pillars were joined to laminate substrates using either conventional forced convection reflow or the controlled impingement of a defocused infrared laser. The laser reflow joining process was accomplished with an order of magnitude reduction in time above liquidus and a similar increase in solidification cooling rate. The brief reflow time and rapid cooling of a laser impingement reflow necessarily affects all time and temperature dependent phenomena characteristic of reflowed molten solder. These include second phase precipitate dissolution, base metal (copper) dissolution, and the extent of surface wetting. This study examines the reflow dependent microstructural aspects of flip chip Sn-Ag joints on samples of two different size scales, the first with copper pillars of 70μm diameter on 120μm pitch and the second with 23μm diameter pillars on a 40μm pitch. The length scale of Pb-free solder joints is known to affect the Sn grain solidification structure; Sn grain morphology will be noted across both reflow time and joint length scales. Sn grain morphology was further found to be dependent on the extent of surface wetting when such wetting circumvented the copper diffusion barrier layer. Microstructural analysis also will include a comparison of intermetallic structures formed; including the size and number density of second phase Ag3Sn precipitates in the joint and the morphology and thickness of the interfacial intermetallics formed on the pillar and substrate surfaces.
Industry Directory | Distributor
We are dealing with Used equipment. Rental or Leasing available. Installation and only supply good condition equipments. Master Distributor for Hepco SMT Inc . Distributor for Hover Davis and many more
New Equipment | Solder Materials
With its tin-copper-nickel-germanium alloy, SN100C is a popular lead-free wave soldering alloy. Although initially developed to address the need for an economical wave solder, it has since been found that its properties make SN100C ideal for reflow a
Solder joint inspection of bottom-side PCBs Intelligent Inspection of Solder Joints, THT and SMD Components Today, the industry standard quality assurance in electronics production is automatic optical inspection (AOI) of SMD components on printed
Technical Library | 2022-10-31 18:35:40.0
Voids affect the thermal characteristics and mechanical properties of a solder joint, thereby affecting the reliability of the solder interconnect. The automotive sector in particular is requiring the mitigation of solder voids in various electronic control modules to the minimum possible level. Earlier research efforts performed to decrease voids involved varying the reflow profile, paste deposit, paste alloy composition, stencil aperture, and thickness. Due to the various advantages they offer, the use of Ball Grid Array packages is common across all industry sectors. They are also prone to process voiding issues. This study was performed to determine if vacuum assisted reflow process can help alleviate the voids in area array solder joints. Test parameters in this study largely focused on vacuum pressure level and vacuum dwell time.
