This paper reports how the solder joint fatigue lives of three types of lead free plastic BGA components were affected by cracks formed in the printed PCB laminate during a thermal cycling test. The
The purpose of this paper is to study thermal and optical characteristics of ThinGaN (UX:3) white LED mounted on SinkPAD by three types of solder paste (SP): No-Clean SAC305 (SP1),...
Impact of Metal Paste Savings on Soldering Process Ag savings possible by reduction of height of metallization with respect to Rs Diffusion of Sn and Ag at interface of solder alloy and metal pad
This paper provides a review of solder joints vision inspection, covering key stages including image acquisition, image enhancement, localization and segmentation and feature
A deep dive into Selective wave soldering—covering high-speed SI, thermal management, and power/interconnect design—to help you build high-performance data-center optical-module PCBs.
Although the soldering profile did not affect the extent of laminate cracking, it did impact the fatigue life of the solder joints. An increase of the peak temperature improved the fatigue life, probably due to
Conclusion Solder pads represent a fundamental element of PCB design and assembly, directly influencing product reliability, manufacturability, and performance. Proper attention to pad design,
We report on structuring copper representing soldering pads of printed circuit boards by laser-induced periodic surface structures. Femtosecond
The reliability and performance of solder ball joints are critical factors affecting the durability and functionality of electronic parts. This study investigates the relationship between metal
QFN (Quad Flat No-leads) packages MLF 16 and 52 were SMT reflowed and evaluated to determine the effect of OP-over-printing solder paste on the QFN I/O pads for reducing the QFN thermal pad void
Simultaneously an investigation of the impact on the soldering process (heating, cleaning, soldering, cooling), which influences the formation of the
Impact of W arpage Effects on Quality and Reliability of Solder Joints Oliver Albrecht, Heinz Wohlrabe and Karsten Meier Institute of Electronic
We investigated the influence of laser-based soldering of op-tical components on stress induced changes of optical path difference for SQ1 and the radiation resistant glass LAK9G15.
This study investigates the thermal stress behavior of CSP-LED solder joints by considering the combined effects of void ratio, chip substrate, solder thickness, and PCB materials
In this work, magnetic field imaging (MFI) is utilized to do a non‐destructive, quantitative analysis of the modules in order to investigate the quality of the soldering contacts. In detail the cross
During PCB fabrication, the solder mask layer is defined in Gerber files with precise openings aligned to the gold finger pads. Proper delineation ensures the mask terminates cleanly
Insufficient pad adhesion can cause pad lifting or complete separation during soldering, often resulting from contamination, poor copper adhesion, or excessive heat.
Using low melting solder alloys, an UV-resistant jointing technique for lenses and mounts is described in . It relies on form fit bonding (positively locking) for the fastening of an optical element as the
This paper investigates the effect of solder pad size on the fatigue life of fine-pitch ball grid array (FBGA) solder joints in memory modules due to harmonic excitation by using a global–local
The Ag/Si interface area is therefore significantly reduced. We investigated the impact of the solder pads on the PERC solar cell performance. We build a demonstrator module of our PERC solar cells to
Neither is the impact of the grain structure on the fatigue life of the solder joints well understood and then especially the impact of solder joints
It was shown that the soldering process visibly influences the results of measurements of optical and thermal parameters of LED modules. For example, values of thermal resistance of these
Top view and cross section microscopy images of soldered wires onto Ag pads. Contact information — Dr. Benjamin Grübel Soldering – Module Technology
Figure 3 is a top view of the signal and power pin of a 2nd Generation power module properly soldered to a printed circuit board. Notice that both the joint and the area around the joint are clean and free
Learn everything about solder pads: types, design rules, common issues, repair techniques, and how they impact PCB performance and reliability.
We report a methodology that allows for quasi-continuous in-situ optical microscopic imaging of a cross-sectioned solder joint (sample) during testing for electromigration. A SAC305
Screen printed conductive epoxy can be used to attached fiber optic modules. Conductive epoxy can have a coefficient of thermal expansion (CTE) that more closely matches that of the epoxy used in
In this part of the investigation, the impact of various combinations of soldering processes, PCB build-up, solder pad finish and solder composition on
Purpose The purpose of this paper is to present and discuss the results of measurements illustrating influence of the area of a thermal pad and the kind of the used base on thermal and optical
Contact us for competitive quotes on any of our fiber optic products
Get a Quote