Industry Directory | Consultant / Service Provider
SEM Lab, Inc. provides failure analysis, materials characterization, scanning electron microscopy (SEM) and FTIR services. We specialize in failure analysis of electronic components & assemblies. (see www.semlab.com/blog)
Electronics Forum | Sun Apr 04 10:16:16 EDT 2004 | cyclopsn
I'm involved in backplane manufacturing process. There are about 10 electrolitic capacitor assembled in my board.These capacitor are soldered using a selective soldering machine. My problem is that these capacitor will charged up and failed as short
Electronics Forum | Wed Jul 10 18:19:42 EDT 2002 | davef
Flex cracking under the terminations is generally regarded as one of the primary causes of failure of ceramic chips. If you can see cracks in the solder joints from board flex, those chips are certainly strongly suspect, and you must assume there is
Industry News | 2003-04-30 08:51:08.0
Electrolube played the role of environmental champion in Australia recently.
Industry News | 2018-10-18 10:25:53.0
Marking Diode Poles on Silkscreen Layer
Technical Library | 2021-11-03 16:49:59.0
Ultrathin bare die chips were soldered using a novel soldering technology. Using homogeneous flash light generated by high-power xenon flash lamp the dummy components and the bare die NFC chips were successfully soldered to copper tracks on polyimide (PI) and polyethylene terephthalate (PET) flex foils by using industry standard Sn-Ag-Cu lead free alloys. Due to the selectivity of light absorption, a limited temperature increase was observed in the PET substrates while the chip and copper tracks were rapidly heated to a temperatures above the solder melting temperature. This allowed to successfully soldered components onto the delicate polyethylene foil substrates using lead-free alloys with liquidus temperatures above 200 °C. It was shown that by preheating components above the decomposition temperature of solder paste flux with a set of short low intensity pulses the processing window could be significantly extended compared to the process with direct illumination of chips with high intensity flash pulse. Furthermore, it was demonstrated that with localized tuning of pulse intensity components having different heat capacity could be simultaneously soldered using a single flash pulse.
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.
| https://pcbasupplies.com/fuji-ip-3-nozzle-short-7-00-with-31mm-disc/
Count On Tools AQNA-3210 Login Create Account Contact View My Cart Menu × Categories Hand Soldering & Rework Automation Tooling PCB Support Systems Soldering Robots Material Handling Dry Storage Cabinets Component Handling Selective Solder Nozzles Pick
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_does-capacitor-height-affect-pad-geometry_topic2366.xml
. Does Capacitor Height Affect Pad Geometry? : According to IPC-J-STD-001, the... Author: Tom HSubject: 2366Posted: 24 Jul 2018 at 10:37amAccording to IPC-J-STD-001, the height of a chip component does impact the "Toe" solder joint goal
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
