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 | 2005-09-19 16:07:56.0
No higher temperature and No process changes needed
Industry News | 2003-06-20 08:18:46.0
Providing the ideal solution to high-current PCB applications where height restrictions are a major consideration is Finder's 40.11 series flatpack PCB relay.
Parts & Supplies | Pick and Place/Feeders
Juki CF8L1 SMT feeder Juki relevant spare part in stock E6300706000 Juki 32mm Feeder Return Spring E6301706000 Juki 32mm Feeder Reel Spring E6322705000 Juki Feeder Screw E6350705000 JUKI feeder spring E6367705000 Juki Feeder Parts
Events Calendar | Tue Apr 06 00:00:00 EDT 2021 - Tue Apr 06 00:00:00 EDT 2021 | ,
Capital Chapter Webinar: Next Gen Lead Free Solders for High Reliability & SMT Yield improvement
Used SMT Equipment | Soldering - Wave
Speedline Electrovert Wave Soldering Machine Model: Vectra 450F Year: 2001 Power: 480V / 3-Phase 3 Bottom-Side Preheat (2 Convection + 1 IR) 1 Top-Side Preheat (IR) Leaded Pot (63/37 SnPb)
Industry News | 2018-02-19 13:55:53.0
IPC — Association Connecting Electronics Industries® Pb-free Electronics Risk Management (PERM) Council has developed the first single document dedicated solely to assisting design engineering in the development of electronics that are completely lead-free (Pb-free) and meet the demanding requirements of aerospace, defense and high performance (ADHP) products and systems.
Parts & Supplies | Chipshooters / Chip Mounters
Detailed Product Description WE provide SMT kinds of feeders , feeder carts , ball spline , machines, nozzles, motors, valve , belt…etc., Main business are CM402,CM602,CM101,NPM,BM, YAMAHA....etc., Original new and used both have , if you are inte
Used SMT Equipment | Soldering - Wave
Operating System: Windows based Details: • Dual pot-Lead and Lead Free • Includes full pot of Lead Free –SN100C solder and Lead SN63/PB37 solder • Carbon Steel Solder pots with high temperature protective coating • A
Used SMT Equipment | Soldering - Reflow
We offer Heller ovens, as is for complete machine or for spare parts or maybe remove from a machine all items and offer just the parts. condition, description in the following link: https://drive.google.com/drive/folders/1xHMV3GfPB_xesx9RkcVF-Cc
