Technical Library | 2023-01-17 17:27:13.0
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. Specifically, the effect of the reflow peak temperature and time above solder liquidus temperature are studied. Nine reflow profiles for SAC 305 and nine reflow profiles for SnPb have been developed with three levels of peak temperature (230 o C, 240 o C, and 250 o C for SAC 305; and 195 o C, 205 o C, and 215 o C for SnPb) and three levels of time above solder liquidus temperature (30 sec., 60 sec., and 90 sec.). The shear force data of four different sizes of chip resistors (1206, 0805, 0603, and 0402) are compared across the different profiles. The shear force of the resistors is measured at time 0 (right after assembly). The fracture surfaces have been studied using a scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS)
Industry News | 2017-09-16 02:29:39.0
Heller Industries has been awarded the 2017 Global Frost & Sullivan Company of the Year Award for its surface mount technology (SMT) soldering equipment that enables Industry 4.0. - the automation and data exchange in manufacturing technologies.
Industry News | 2019-12-09 14:44:26.0
The SMT Reflow Soldering Equipment (Global) award was awarded to Heller Industries by Frost & Sullivan.
Precision Dispensing System for Heated Dispense Applications The GPD Global MAX II is a compact; high-accuracy system designed for today’s advanced heated dispensing applications. The frame is molded from “liquid rock” which gives the system a stabl
Precision Dispensing System for Heated Dispense Applications The GPD Global MAX II is a compact; high-accuracy system designed for today’s advanced heated dispensing applications. The frame is molded from “liquid rock” which gives the system a stabl
New Equipment | Education/Training
IPC - Association Connecting Electronics Industries® offers globally recognized industry-traceable training and certification programs on key Electronics Industry Standards. Blackfox, founded in 1996, is the premier Worldwide Approved IPC Training Ce
Industry News | 2003-01-29 13:23:31.0
A Common Drain Configuration that is 80% Smaller than Devices in the TSSOP-8 Package
Industry News | 2003-03-04 08:31:59.0
Ian Suttie To Drive Company's Expansion in Professional Printed Circuit Board Design Market
Industry News | 2003-04-02 09:01:24.0
Turnover a little lower than that of 2001/02 is projected for the whole financial year
Industry News | 2003-04-22 08:01:54.0
Two new additions to Heyco's range of PCB accessories are the SHCBS and SRF series of nylon circuit board spacers which, when used as a pair, provide a secure hinging mechanism for a mounted PCB.
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