Industry News | 2010-12-01 15:42:43.0
Christopher Associates introduces the S3X-BF70M and 200N series wafer bumping pastes. The pastes exhibit a high definition over time and at elevated temperatures.
Industry News | 2023-12-18 13:13:45.0
SHENMAO Technology proudly unveils its latest innovation, the PF918-P250 no-clean solder paste, specifically designed to meet the stringent demands of automotive applications. With a focus on enhancing thermal impact reliability, PF918-P250 sets a new standard for performance, delivering superior results for automotive devices and high-power components.
Industry News | 2021-10-11 16:08:26.0
SHENMAO America, Inc. today announced plans to exhibit together with NeVo GmbH at productronica 2021, scheduled to take place Nov. 16-19, 2021 at Neue Messe München in Munich, Germany. NeVo will showcase Shenmao's PF918-P250 Thermal Fatigue Resistance Lead-free Solder Paste and PF606-P245X Lead-Free Solder Paste.
Industry News | 2022-01-10 16:49:36.0
SHENMAO America, Inc. is pleased to announce plans to exhibit in Booth #2534 during the 2022 IPC APEX EXPO, scheduled to take place Jan. 25-27, 2022 at the San Diego Convention Center in California. The company will highlight its PF918-S High Reliability Solder Sphere and PF918-P250 Thermal Fatigue Resistance Lead-free Solder Paste. The new paste is formulated with the new SHENMAO Sn/4Ag/3Bi Alloy design with high thermal impact reliability.
Industry News | 2023-09-25 17:55:00.0
Indium Corporation R&D Manager, Alloy Group and Principal Research Metallurgist Dr. HongWen Zhang will present at the SMTA Empire Expo & Tech Forum on September 26 in Syracuse, NY. Also at the conference, Regional Sales Manager Emily Belfield will host a panel discussion, Generational Differences in Today's Workplace.
Technical Library | 2007-03-08 19:31:10.0
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the solder joint. The degree of wetting, the microstructure (in particular the intermetallic layer), and the inherent strength of the solder all factor into the reliability of the solder joint. This paper presents experimental results on the effect of reflow profile on both 63%Sn 37%Pb (SnPb) and 96.5%Sn 3.0%Ag 0.5%Cu (SAC 305) solder joint shear force.
Technical Library | 2008-03-31 21:35:36.0
While the situation varies from country to country, nearly one year after the EU RoHS Directive came into force implementation of lead-free solder is progressing steadily. For lead-free soldering to be considered successful it is not sufficient just to have dealt with the challenges of mass production. It is also necessary to establish that the soldered joints produced are at least as reliable as those made with Sn-37Pb alloy. In this context "reliability" means the length of time in service that the initial functionality of the joint can be maintained. In this paper we will discuss some of the issues involved in solder joint reliability through a comparison of the properties of two alloys that are widely used for lead-free wave soldering, SAC305 (Sn-3.0Ag-0.5Cu) and the Sn, Cu, Ni, Ge alloy SN100C.
Technical Library | 2016-07-07 15:37:18.0
How susceptible are the metals used in modern electronics manufacturing to corrosion by common beverages? This is a question of interest, especially to manufacturers, retailers and to a certain extent end customers. In this study the dissolution of aluminum, copper, gold, iron, lead, nickel, SAC305 solder, silver, tin and zinc was examined. Individual foils of these materials were fully immersed in one of sixteen chosen beverages and heated for 3 days at 40°C. The resulting solutions were analyzed using ICP-OES. The data were examined in light of the known pH, conductivity and ionic contents of the beverages, determined in previous work. Conclusions about the relative susceptibility to corrosion of the various metals and the corrosive power of the different beverages are made.
Technical Library | 2017-04-13 16:14:27.0
The drive to reduced size and increased functionality is a constant in the world of electronic devices. In order to achieve these goals, the industry has responded with ever-smaller devices and the equipment capable of handling these devices. The evolution of BGA packages and leadless devices is pushing existing technologies to the limit of current assembly techniques and materials.As smaller components make their way into the mainstream PCB assembly market, PCB assemblers are reaching the limits of Type 3 solder paste, which is currently in use by most manufacturers.The goal of this study is to determine the impact on solder volume deposition between Type 3, Type 4 and Type 5 SAC305 alloy powder in combination with stainless steel laser cut, electroformed and the emerging laser cut nano-coated stencils. Leadless QFN and μBGA components will be the focus of the test utilizing optimized aperture designs.
Technical Library | 2021-08-25 16:34:37.0
As the traditional eutectic SnPb solder alloy has been outlawed, the electronic industry has almost completely transitioned to the lead-free solder alloys. The conventional SAC305 solder alloy used in lead-free electronic assembly has a high melting and processing temperature with a typical peak reflow temperature of 245ºC which is almost 30ºC higher than traditional eutectic SnPb reflow profile. Some of the drawbacks of this high melting and processing temperatures are yield loss due to component warpage which has an impact on solder joint formation like bridging, open defects, head on pillow.
