Industry News | 2016-08-31 19:08:27.0
PDR Americas announced today that it will exhibit at SMTA International, scheduled to take place September 27-28, 2016 at the Donald Stephens Convention Center in Rosemont, IL. The company will showcase its best-selling PDR Model E3Vi Gold and offer several show specials in Booth #202. Additionally, PDR will hold a drawing for a portable Coleman BBQ grill (Roadtrip LXE). Show specials include:
Industry News | 2011-02-14 14:35:18.0
Christopher Associates/Koki Solder announces that Jasbir Bath, Consulting Engineer, will give a presentation about Head-in-Pillow Component Soldering Defects at the upcoming LA/O.C. SMTA Chapter Dinner, scheduled to take place Thursday, February 17, 2011 at JT Schmid’s Restaurant & Brewery in Anaheim, CA at 7 p.m.
Industry News | 2013-10-28 14:45:08.0
Ersa, the specialist for electronic production equipment, has numerous highlights to present to the visitors of Productronica.
Industry News | 2019-04-10 10:19:18.0
(Albany, NY) April 8, 2019 IMAPS New England Symposium & Expo 2019, will be held at the Boxboro Regency Hotel & Conference Center, in Boxborough, MA on May 7, 2019. YINCAE Advanced Materials hopes you will stop by our booth to learn more about YINCAE and the innovative products we have to offer: Solder Joint Encapsulants, Underfill Materials, Die Attach Adhesives, Thermal Interface Materials and more.
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 | 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.
Technical Library | 2018-09-26 20:33:26.0
Bottom terminated components, or BTCs, have been rapidly incorporated into PCB designs because of their low cost, small footprint and overall reliability. The combination of leadless terminations with underside ground/thermal pads have presented a multitude of challenges to PCB assemblers, including tilting, poor solder fillet formation, difficult inspection and – most notably – center pad voiding. Voids in large SMT solder joints can be difficult to predict and control due to the variety of input variables that can influence their formation. Solder paste chemistries, PCB final finishes, and reflow profiles and atmospheres have all been scrutinized, and their effects well documented. Additionally, many of the published center pad voiding studies have focused on optimizing center pad footprint and stencil aperture designs. This study focuses on I/O pad stencil modifications rather than center pad modifications. It shows a no-cost, easily implemented I/O design guideline that can be deployed to consistently and repeatedly reduce void formation on BTC-style packages.
Industry News | 2017-11-24 20:19:27.0
SHENMAO Introduces New Generation Lead-Free Solder Paste PF606-P140 to solve HoP issues and improve ICT Testability at SMTA Exhibition: November 29, 2017 booth # 22, 9 am to 3 pm Bestronics Facility, 2243 Lundy Ave, San Jose, CA 95131
Technical Library | 2021-08-25 16:28:36.0
In this study, a Sn–Bi composite solder paste with thermosetting epoxy (TSEP Sn–Bi) was prepared by mixing Sn–Bi solder powder, flux, and epoxy system. The melting characteristics of the Sn–Bi solder alloy and the curing reaction of the epoxy system were measured by differential scanning calorimeter (DSC). A reflow profile was optimized based on the Sn–Bi reflow profile, and the Organic Solderability Preservative (OSP) Cu pad mounted 0603 chip resistor was chosen to reflow soldering and to prepare samples of the corresponding joint. The high temperature and humidity reliability of the solder joints at 85 #14;C/85% RH (Relative Humidity) for 1000 h and the thermal cycle reliability of the solder joints from
Technical Library | 2023-06-14 01:09:26.0
In the electronic packaging industry, it is important to be able to make accurate predictions of board level solder joint reliability during thermal cycling exposures. The Anand viscoelastic constitutive model is often used to represent the material behavior of the solder in finite element simulations. This model is defined using nine material parameters, and the reliability prediction results are often highly sensitive to the Anand parameters. In this work, an investigation on the Anand constitutive model and its application to SAC solders of various Ag contents (i.e. SACN05, with N = 1, 2, 3, 4) has been performed. For each alloy, both water quenched (WQ) and reflowed (RF) solidification profiles were utilized to establish two unique specimen microstructures, and the same reflow profile was used for all four of the SAC alloys so that the results could be compared and the effects of Ag content could be studied systematically.
COT specializes in high quality SMT nozzles and consumables for pick and place machines. We provide special engineering design service of custom nozzles for those unique and odd components.
2481 Hilton Drive
Gainesville, GA USA
Phone: (770) 538-0411
