New Equipment | Solder Materials
AMTECH’s Tacky Paste Fluxes (TF) are designed to meet and exceed industry standards. TFs are used for general touch-up and rework of PCBs, and for the attachment of spheres to BGA and mBGA packages. Operations such as soldering Flip Chip components t
Transition to Lead free will impact almost everyone in the electronics industry whether you consider yourself RoHS exempt or not. This is not a theoretical course. The objective of this course is to show you how you can resolve the business and techn
Electronics Forum | Fri Apr 07 11:19:55 EDT 2006 | muse95
Technically speaking, most likely yes it will work, unless possibly it is a BGA. There are issues surrounding BGA's. Here are some of the general issues: On any type of component, if the Pbfree solder you are using contains bismuth, then the Pb in
Electronics Forum | Thu Apr 13 02:31:16 EDT 2006 | raqi16
Thank you! sorry, i just realized my posted question was not very specific.. no, it's not a BGA part, it's just a standard surface mount device and the only leaded part are the leads.
Industry News | 2018-12-08 03:24:24.0
RoHS Guide in Electronics: RoHS, WEEE and Lead-Free FAQ
Industry News | 2013-01-02 16:01:34.0
A Convenienient and informative online tutorial about Design and Assembly Process Challenges for Bottom Terminations Components
Technical Library | 2022-10-31 17:09:04.0
The global transition to lead-free (Pb-free) electronics has led component and equipment manufacturers to transform their tin–lead (SnPb) processes to Pb-free. At the same time, Pb-free legislation has granted exemptions for some products whose applications require high long-term reliability. However, due to a reduction in the availability of SnPb components, compatibility concerns can arise if Pb-free components have to be utilized in a SnPb assembly. This compatibility situation of attaching a Pb-free component in a SnPb assembly is generally termed "backward compatibility." This paper presents the results of microstructural analysis of mixed solder joints which are formed by attaching Pb-free solder balls (SnAgCu) of a ball-grid-array component using SnPb paste. The experiment evaluates the Pb phase coarsening in bulk solder microstructure and the study of intermetallic compounds formed at the interface between the solder and the copper pad.
Technical Library | 2020-10-27 02:07:31.0
For companies that choose to take the Pb-free exemption under the European Union's RoHS Directive and continue to manufacture tin-lead (Sn-Pb) electronic products, there is a growing concern about the lack of Sn-Pb ball grid array (BGA) components. Many companies are compelled to use the Pb-free Sn-Ag-Cu (SAC) BGA components in a Sn-Pb process, for which the assembly process and solder joint reliability have not yet been fully characterized. A careful experimental investigation was undertaken to evaluate the reliability of solder joints of SAC BGA components formed using Sn-Pb solder paste. This evaluation specifically looked at the impact of package size, solder ball volume, printed circuit board (PCB) surface finish, time above liquidus and peak temperature on reliability. Four different BGA package sizes (ranging from 8 to 45 mm2) were selected with ball-to-ball pitch size ranging from 0.5mm to 1.27mm. Two different PCB finishes were used: electroless nickel immersion gold (ENIG) and organic solderability preservative (OSP) on copper. Four different profiles were developed with the maximum peak temperatures of 210oC and 215oC and time above liquidus ranging from 60 to 120 seconds using Sn-Pb paste. One profile was generated for a lead-free control. A total of 60 boards were assembled. Some of the boards were subjected to an as assembled analysis while others were subjected to an accelerated thermal cycling (ATC) test in the temperature range of -40oC to 125oC for a maximum of 3500 cycles in accordance with IPC 9701A standard. Weibull plots were created and failure analysis performed. Analysis of as-assembled solder joints revealed that for a time above liquidus of 120 seconds and below, the degree of mixing between the BGA SAC ball alloy and the Sn-Pb solder paste was less than 100 percent for packages with a ball pitch of 0.8mm or greater. Depending on package size, the peak reflow temperature was observed to have a significant impact on the solder joint microstructural homogeneity. The influence of reflow process parameters on solder joint reliability was clearly manifested in the Weibull plots. This paper provides a discussion of the impact of various profiles' characteristics on the extent of mixing between SAC and Sn-Pb solder alloys and the associated thermal cyclic fatigue performance.
Welcome to this Defect of the Month video on via hole failures and how to see them, this series of videos were produced for and featured as part of the NPL/IPC video library and examples are taken from the NPL Defect Database. Over the last couple of
Events Calendar | Mon Mar 16 00:00:00 EDT 2020 - Mon Mar 16 00:00:00 EDT 2020 | ,
BGA & Area Array Failures, Causes & Corrective Actions Online Webinar
Impact of Reflowing A Pb-free Solder Alloy Using A Tin/Lead Solder Alloy Reflow Profile On Solder Joint Integrity If you don't see images, please visit online version at #Application.SmtNet.baseURL#/express/ The Impact of Reflowing A Pb
3D IC Development Needs Innovative Socket Solution 3D IC Development Needs Innovative Socket Solution Evolution from cell phones with only a base-band processor and limited memory to today's high-end phones with an additional applications
| https://www.eptac.com/are-voids-in-solder-joints-really-an-issue/
. It is the joining process used to fuse different types of metals together by melting solder. Solder is a metal alloy usually constructed of tin and lead and is melted by using a hot iron
Surface Mount Technology Association (SMTA) | https://www.smta.org/smtai/best_papers.cfm
: Robert Darveaux, Amkor Technology "Mechanical Testing of Solder Joint Arrays Versus Bulk Solder Specimens" 2005: Julia Y. Zhao, Analog Devices "A Study of the Failure Mechanisms in Lead-free and Eutectic Tin-lead Solder Bumps for Flip Chip Assembly" 2004
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