Industry Directory | Manufacturer
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.
Industry Directory | Manufacturer
Aoki Laboratories Ltd. is an ISO-9002 certified company specializes in manufacturing of Sn/Pb Bar Solder, Cored Wire and Paste.Environmental friendly products, such as: lead-free solder, no-clean non-halide solder flux, no-clean cored wire and Non-CFC cleaner, are compliance with ISO-14001 requirements.
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
New Equipment | Solder Paste Stencils
Eliminate hours of solder mask damage repair time for bga sites while improving rework yield. Are you frustrated by the time it takes to repair mask damage underneath the BGA during the rework process? Are you squeezed for space on the PCB in an
Electronics Forum | Fri Nov 03 09:41:17 EDT 2017 | davef
On your question about reliability ... " Is there testing we can do (environmental stress chambers) with which we can see the long-term effects of flux residue on solder joints?" Sure, incompletely activated low residue flux residues are potentially
Electronics Forum | Mon Mar 20 16:47:13 EDT 2017 | u4bga
We're currently using no-clean flux (SR-12) in a no-clean manual soldering process. The brownish flux residue impedes direct visual inspection of the solder joints. Therefore, we're forced to clean the residue off. (1) Is there testing we can do
Used SMT Equipment | Pick and Place/Feeders
DEK 03IX automatic solder paste printing machine features advanced up/down k-view vision system, independent control and adjustment of lighting, high-speed moving lens, accurate alignment of PCB PCB and net board. The DEK Horizon 03IX automatic solde
Used SMT Equipment | Soldering - Reflow
BTU Pyramax 125N Parameters Pyramax Specifications Model Pyramax 125N Atmosphere Air or Nitrogen Conveyor Speed 10-60 in/min 25-152 cm/min Conveyor Width 2-18 in 51-457 mm Heated Length 125 in 3175 mm Heated Zones&
Industry News | 2012-05-11 20:35:45.0
Heller Industries has been awarded a 2012 SMT VISION Award in the category of Soldering Reflow for its 1936 Mark 5 Reflow Oven. The award was presented on April 25, 2012 at the Nepcon China Exhibition.
Industry News | 2003-04-30 08:51:08.0
Electrolube played the role of environmental champion in Australia recently.
Parts & Supplies | Pick and Place/Feeders
Many companies first applied SMT second-hand placement machines, and the selected placement machines were relatively stable, with low failure rate, easy maintenance, and important maintenance costs. Therefore, there are still many concerns about buyi
Parts & Supplies | Pick and Place/Feeders
Many companies first applied SMT second-hand placement machines, and the selected placement machines were relatively stable, with low failure rate, easy maintenance, and important maintenance costs. Therefore, there are still many concerns about buyi
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 | 2018-11-20 21:33:57.0
There are several industry-accepted methods for determining the reliability of flux residues after assembly. The recommended methods of test sample preparation do not always closely mimic the thermal cycle experienced by an assembly. Therefore, extraction from actual assemblies has become a popular method of process control to assess consistency of post-reflow cleanliness. Every method of post-reflow flux residue characterization will depend on the reflow process followed to prepare the coupon.This investigation will focus on the effect of thermal conditions on the remainder of active ingredients in flux residues after assembly with no-clean solder pastes.
SMT solder dross recovery system solder waste recycling separator online automatic solder dross separator HR-SD100 is an endeavor in reverting and recycling the oxides which occur during working of a Wave Soldering Machine in order to reduce product
Flux spray coating on a PCB with uniformal thickness down to 5 microns, with clear edge definition and minimal overspray. Can coat large or shoot dots with the same jet.
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
Training Courses | ONLINE | | PCB Assembly Courses
The PCB assembly courses provide knowledge of different processes and equipment used in TH and SMT assembly of printed circuit boards.
Events Calendar | Tue Apr 21 00:00:00 EDT 2020 - Thu Apr 23 00:00:00 EDT 2020 | Amsterdam, Netherlands
Electronics in Harsh Environments Conference
Events Calendar | Wed Aug 19 00:00:00 EDT 2020 - Wed Aug 19 00:00:00 EDT 2020 | ,
DfR - Design for Rinse-Ability: Effect of SMT Component Package Design on Cleaning Effectiveness
Article Return to Front Page No-Residue Technolo
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/solder-mask-on-0-40-pitch-qfn_topic3127.html
Solder Mask On 0.40 Pitch QFN - PCB Libraries Forum Forum Home > Libraries > Footprints / Land Patterns New Posts FAQ Search Events Register Login Solder Mask On
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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
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