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 | 2023-08-16 18:16:05.0
A global aerospace and defense leader requested a capability test of small volume solder paste dispensing on FR4 circuit boards.
Technical Library | 2023-08-16 18:09:06.0
One of our customers involved with Electronics and Aerostructures requested a test to dispense Techspray Wondermask 2204 solder mask. The dispensing locations include large and small screw holes, single through-hole vias, and connector locations consisting of multiple through-hole vias. The process needed to run quickly and reliably.
Technical Library | 2023-09-07 14:38:31.0
A repeat customer specializing in high-technology interconnect, sensor, and antenna solutions, partnered with us to dispense small volumes of solder paste (Indium 10.1 SAC305 T6SG 78%m) onto backplane connectors – gold pads 0.175mm x 0.225mm. We performed a test requiring 0.200mm diameter or smaller dots to demonstrate the dispensing capability required.
Technical Library | 2023-08-18 03:28:47.0
Today, KINGSUN shares with you the common types and classifications of SMT mounters. 一、According to the feeding method, common ones include: 1.Tape Feeder 2.Tray Feeder 3.Tube Feeder 4.Stick Feeder 5.Special Vibration Feeder 二、According to the classification of electric and non electric, the common ones are electric feeder and mechanical feeder. Yamaha's SIGMA SMT machines are all electric feeders, while many of JUKI's feeder are mechanical feeders...... Regarding feeders related knowledge, KINGSUN share with you here , hoping to be helpful to you. More information about Products please Contact US at jenny@ksunsmt.com or visit www.ksunsmt.com . "DONGGUAN KINGSUN AUTOMATION TECHNOLOGY CO.,LTD" is a leading SMT automation equipment factory provider in China. With many years of profound experience accumulation, we provides comprehensive solutions for global customers with strong resources and high-quality professional technical team.
Technical Library | 2023-08-14 09:06:53.0
In the operation of SMT mounter, the process and integrity of the nozzle of the mounter will have a significant impact on the performance of the machine. As one of the important components of the SMT machine, it is necessary for us to carry out daily maintenance and upkeep of the SMT nozzle. To ensure that the suction nozzle of the SMT machine is intact before operation, how should we do a good job of maintaining the suction nozzle of the SMT machine during normal use? KINGSUN technical team analysis operation has the following main points: 1.Wipe the surface of the SMT nozzle with a dust-free cloth. 2.The small aperture nozzle can be passed through with a thin steel wire and then blown with an air gun. 3.The surface of the nozzle should not be soaked with corrosive solution such as alcohol, as this may cause the surface to fall off. 4.HOLDER should use a cotton swab to wipe the cavity and not damage the filter screen. 5.Regular addition of special grease to HOLDER claws. 6.According to production, it is best to regularly maintain and do other maintenance regularly. (* Suitable for Yamaha SMT machine nozzles , JUKI SMT machine nozzles, Samsung SMT machine nozzles, Panasonic SMT machine nozzles, Fuji SMT machine nozzles, Siemens SMT machine nozzles etc.) Regarding the SMT machine nozzle daily maintenance operation instructions, KINGSUN share with you here , hoping to be helpful to you. More information about Products please Contact US at jenny@ksunsmt.com or visit www.ksunsmt.com , thanks.
Technical Library | 2023-12-15 03:06:24.0
The first process in the SMT industry is solder paste printing. After the solder paste printing is completed, electronic components are attached to PCB pads through a SMT machine, and then reflow soldered. A preliminary PCB board is roughly processed. SMT is a combination of multiple devices, and such a line is called an SMT production line. Our common PCBA is processed through this process. In SMT technology, each process is very important, and poor quality can be caused by different process defects. Today, we are discussing the causes and countermeasures of SMT printing collapse.
Technical Library | 2023-09-16 07:16:54.0
JUKI is a leading manufacturer of SMT pick and place machines, and their products are known for their high quality, precision, and reliability. In this article, we will discuss the benefits of using JUKI PCB SMT pick and place machines, including: High accuracy and precision Fast production speeds Flexible capabilities Reliable performance
Technical Library | 2023-09-16 06:12:26.0
Discover our cost-effective wave soldering machine designed to streamline your PCB assembly process without breaking the bank. Achieve quality soldering with affordability.
Technical Library | 2023-09-16 06:29:26.0
Explore our range of reflow ovens designed to streamline your PCB assembly process. Achieve consistent and high-quality soldering for your electronic components.
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