New Equipment | Education/Training
BEST offers a one of a kind mobile training center which allows the students to be sequestered inside the training center without outside distrction. In addtion the mobile traiing enter on wheels is a comfortabel place to train where all of the most
Electronics Forum | Thu Jul 26 17:43:57 EDT 2007 | tphan
Board had a via hole underneath of the solder pad of the BGA. When it run through reflow oven, it caused a lot of void. How to correct this issue?
Electronics Forum | Tue Jul 31 17:11:28 EDT 2007 | rpadilla
Is the via hole not supposed to be there, or is this by design? If you are trying to fill the via hole with solder and not have voiding issues, I suggest using a type 4 solder powder mesh size. Reason being, anytime you go beyond Type 4 mesh, to so
Industry News | 2003-04-30 08:51:08.0
Electrolube played the role of environmental champion in Australia recently.
Industry News | 2023-04-11 09:52:04.0
MIRTEC will premier its complete line of 3D AOI and SPI Inspection Systems at SMTconnect, scheduled to take place May 9-11, 2023 in Nuremberg, Germany. The company will showcase a total of five (5) Inspection Systems specifically designed to address the full spectrum of inspection requirements associated with the electronics manufacturing industry in Hall 4A, Stand 128.
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)
Technical Library | 2018-05-09 22:15:29.0
Creep corrosion on printed circuit boards (PCBs) is the corrosion of copper metallization and the spreading of the copper corrosion products across the PCB surfaces to the extent that they may electrically short circuit neighboring features on the PCB. The iNEMI technical subcommittee on creep corrosion has developed a flowers-of-sulfur (FOS) based test that is sufficiently well developed for consideration as an industry standard qualification test for creep corrosion. This paper will address the important question of how relative humidity affects creep corrosion. A creep corrosion tendency that is inversely proportional to relative humidity may allow data center administrators to eliminate creep corrosion simply by controlling the relative humidity in the data center,thus, avoiding the high cost of gas-phase filtration of gaseous contamination. The creep corrosion relative humidity dependence will be studied using a modified version of the iNEMI FOS test chamber. The design modification allows the achievement of relative humidity as low as 15% in the presence of the chlorine-releasing bleach aqueous solution. The paper will report on the dependence of creep corrosion on humidity in the 15 to 80% relative humidity range by testing ENIG (gold on electroless nickel), ImAg (immersion silver) and OSP (organic surface preservative) finished PCBs, soldered with organic acid flux.
PCB vacuum suction loader/SMT vacuum loader for loading bare board on PCB assembly line: https://www.ascen.ltd/Products/Automatic_SMT_equipment/PCB_loader/123.html ASCEN PCB vacuum loader we produced is mainly used for the beginning of the SMT produc
EKT AOI machine application: inspection after stencil printing, pre/post reflow oven, pre/post wave soldering?FPC etc. Stencil printing: Solder unavailability, insufficient or excessive solder, solder misalignment, bridging, stain, scratch etc. Compo
Events Calendar | Tue Feb 18 00:00:00 EST 2020 - Tue Feb 18 00:00:00 EST 2020 | ,
Corrosion Testing For Electronic Equipment
SMTnet Express, July 16, 2015, Subscribers: 23,036, Members: Companies: 14,463, Users: 38,550 Testing Printed Circuit Boards for Creep Corrosion in Flowers of Sulfur Chamber iNEMI (International Electronics Manufacturing Initiative) Qualification
SMTnet Express, March 17, 2022, Subscribers: 25,805, Companies: 11,547, Users: 27,113 Creep Corrosion On Lead-Free Printed Circuit Boards In High Sulfur Environments The material and process changes required to eliminate lead from
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On-line Selective Wave Soldering Machine I.C.T SS540 from China manufacturer - Dongguan Intercontinental Technology Co.,Ltd. English Français Pусский Español Português Deutsch Italiano 日本語 한국어 Tiếng Việt Türk dili Home About Us Company Profile
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
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