New Equipment | Rework & Repair Equipment
Semi automatic bga rework station machine to desolder and solder chip on mobile pcb Features: 1. Made of quality heating material;desoldering and solding procedures of BGA are precisely controlled; 2. Movable heating head,which can be moved
PCB depaneling often happen right after SMT processing or after soldering,or after in-circuit test in the assembly line.PCB depaneling machine to be a important equipment in high-volume electronics assembly production. To choose the ASCEN PCB de
Electronics Forum | Wed Oct 23 14:33:44 EDT 2002 | lhoang
Any one encountered the problem such as poor conductivity when the silkscreen mis-registrated on the solder pads ? Thanks; Linh
Electronics Forum | Sun Nov 03 08:28:29 EST 2002 | davef
We have had poor solderability from silk screen being on pads, but have never measured the conductivity.
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.
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 | 2019-06-12 10:33:58.0
The success of ball grid array (BGA) placement on electronic assemblies is as much a matter of proper preparation and planning, as it is technique. In some designs, it is more appropriate to apply BGAs using a rework station that isolates the placement of the device, without subjecting the entire assembly to thermal reflow. This is especially beneficial in board constructions where the number of BGAs is limited, and the application of the solder paste is difficult, due to small pitch features that stretch the limitation of the stencil construction. Another application for rework stations, involves very large and thermally conductive BGAs, which will not uniformly reflow with other components on the assembly, and may require special process parameters for their proper placement. The most common use of BGA rework stations are for assemblies requiring BGA removal and replacements due to failures in the initial assembly stage.
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
SMT Express, Volume 4, Issue No. 5 - from SMTnet.com Volume 4, Issue No. 5 Thursday, May 23, 2002 Featured Article Return to Front Page Book Review Reviewed by Dave Fish (davef ), Pandion Electronics, Inc. Title: Reflow Soldering
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Heller 公司 | http://hellerindustries.com.cn/Vacuum-Void-Reduction-Reflow.pdf
The Effect of Vacuum Reflow Processing On Solder Joint Voiding And Thermal Fatigue Reliability To be published in the Proceedings of SMTA International, September 17 - 21, 2016, Rosemont, IL
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
