Industry Directory | Manufacturer's Representative
Specialty materials for SMT Assembly. Solder Paste, Spheres, Tac Fluxes, Flip Chip Fluxes, Solder wi
Streamtek Electronics provide HiRel Ceramic-eyelet seal TO25X Headers. Standard products include To254 Header, To257 Header, To258 Header, To259 Header, To267 package and customized headers with similar configuration. These packages are complied with
New Equipment | Solder Materials
The MULTICORE portfolio of cored solder wire features the award-winning multiple flux core technology that ensures the even and consistent distribution of flux throughout the solder wire. This mainstay in Henkel’s line of solder products delivers eas
Electronics Forum | Tue May 16 11:53:39 EDT 2006 | Ajay
Hi, I am having trouble with outgasing voids on my solder bumps.Substrate is Cu with electrolytic Au on it.Sometimes I use electrolytic Ni beneath Au.I am doing laser soldering so this process is fluxless.Its been observed that Ni is helping in redu
Electronics Forum | Sat Dec 30 04:23:50 EST 2023 | 012band
I have used LTS (Sn57.6%Bi0.4%Ag) solder balls for soldering on Ni/Au pads, and I have observed a wrinkle pattern on the ball surface. When you attempted soldering on CuOSP substrate pads under the same conditions, the surface appeared normal. Additi
Industry News | 2018-10-18 10:28:01.0
The Future of Embedded Passive Components
Industry News | 2017-08-29 15:41:30.0
The SMTA and Chip Scale Review are pleased to announce the Workshops for the 14th Annual International Wafer-Level Packaging Conference (IWLPC) held October 26th. IWLPC will be held October 24-26, 2017 at the DoubleTree Airport Hotel in San Jose, California.
Technical Library | 2019-06-20 00:09:49.0
It is well known that during service the layer of Cu6Sn5 intermetallic at the interface between the solder and a Cu substrate grows but the usual concern has been that if this layer gets too thick it will be the brittleness of this intermetallic that will compromise the reliability of the joint, particularly in impact loading. There is another level of concern when the Cu-rich Cu3Sn phase starts to develop at the Cu6Sn5/Cu interface and an imbalance in the diffusion of atomic species, Sn and Cu, across that interface results in the formation at the Cu3Sn/Cu interface of Kirkendall voids, which can also compromise reliability in impact loading. However, when, as is the case in some microelectronics, the copper substrate is thin in relation to the volume of solder in the joint an overriding concern is that all of the Cu will be consumed by reaction with Sn to form these intermetallics.This paper reports an investigation into the kinetics of the growth of the interfacial intermetallic, and the consequent reduction in the thickness of the Cu substrate in solder joints made with three alloys, Sn-3.0Ag-0.5Cu, Sn-0.7Cu-0.05Ni and Sn-1.5Bi-0.7Cu-0.05Ni.
Technical Library | 2015-06-22 16:39:47.0
Surface finishing is an integral part of any PCB fabrication. It is generally applied to exposed Cu connectors and conductors on the board. Surface finishing has numerous important functions. It serves as a protective layer for the Cu connectors during storage. The surface finish helps minimize or reduce tarnish of the Cu substrate. Additionally, since it is the layer that comes into contact with other components during assembly, it ensures good solderability between the PCB and the component during assembly. Furthermore after assembly, the finish helps prolong the integrity of the solder joint during use. A general review of common PCB surface finishes is presented. The advantages and disadvantages of each are discussed and compared.
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SMTnet Express, June 20, 2019, Subscribers: 32,068, Companies: 10,815, Users: 24,854 Dissolution in Service of the Copper Substrate of Solder Joints Credits: Nihon Superior Co., Ltd. It is well known that during service the layer of Cu6Sn5
HALT Testing of Backward Soldered BGAs on a Military Product Online Version SMTnet Express, December 10, 2015, Subscribers: 23,782, Members: Companies: 14,767, Users: 39,402 Packaging Technology and Design Challenge for Fine Pitch Micro-Bump Cu
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/dage/test-types/wedge-shear?con=t&page=5
images upon completion. Micro Testing Thin Die Nordson DAGE Creep testing of Tin Based Alloys Application Note Nordson DAGE Cu Pillar Application Note Nordson DAGE High Strain Rate Nordson DAGE Nordson DAGE bondtesters
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