Industry Directory | Manufacturer
The exclusive supplier of SIPAD Solid Solder Deposit in North America and the only SIPAD Solid Solder Deposit (SSD) coating service bureau in the world.
http://www.flason-smt.com/product/Siemens-12mm-16mm-original-feeder-00141092.html Siemens 12mm 16mm original feeder 00141092 SMT Spare Parts Seimens feeder Siemens 12mm 16mm original feeder 00141092 Usage: Seimens pick and place machine Produ
New Equipment | Rework & Repair Equipment
The BEST EZReball™ process is the answer to your reballing problems. This BGA reballing process simplifies the process while eliminating the clean up of all those paper remnants, allowing for better yields and faster reballing times. The simplicity o
Electronics Forum | Thu Aug 24 14:42:30 EDT 2006 | any
y we had solder ball after reflow owen?
Electronics Forum | Thu Aug 24 15:37:50 EDT 2006 | Chunks
Hi Any, This is from an earlies thread "Solder Ball After Reflow Process". Date: August 16, 2006 01:52 PM Author: Russ Subject: Solder Ball After Reflow Process Oven settings are meaningless here. What does the board see? It is the paste we a
Used SMT Equipment | Soldering - Reflow
A8N Main electric part uses international brand components. Temperature control design achieves international advanced level with stable and even temperature. It is suitable for soldering CSP, BGA component. Energy-saving inner oven design and heat
Industry News | 2018-12-08 03:25:54.0
Basic Soldering Guide – How to Solder Electronic Components
Technical Library | 2012-10-04 18:52:43.0
First published in the 2012 IPC APEX EXPO technical conference proceedings... Due to the obsolescence of SnPb BGA components, electronics manufacturers that use SnPb solder paste either have to use lead-free BGAs and adjust the reflow process or re-ball t
Technical Library | 2020-09-23 21:37:25.0
The need to minimise thermal damage to components and laminates, to reduce warpage-induced defects to BGA packages, and to save energy, is driving the electronics industry towards lower process temperatures. For soldering processes the only way that temperatures can be substantially reduced is by using solders with lower melting points. Because of constraints of toxicity, cost and performance, the number of alloys that can be used for electronics assembly is limited and the best prospects appear to be those based around the eutectic in the Bi-Sn system, which has a melting point of about 139°C. Experience so far indicates that such Bi-Sn alloys do not have the mechanical properties and microstructural stability necessary to deliver the reliability required for the mounting of BGA packages. Options for improving mechanical properties with alloying additions that do not also push the process temperature back over 200°C are limited. An alternative approach that maintains a low process temperature is to form a hybrid joint with a conventional solder ball reflowed with a Bi-Sn alloy paste. During reflow there is mixing of the ball and paste alloys but it has been found that to achieve the best reliability a proportion of the ball alloy has to be retained in the joint, particular in the part of the joint that is subjected to maximum shear stress in service, which is usually the area near the component side. The challenge is then to find a reproducible method for controlling the fraction of the joint thickness that remains as the original solder ball alloy. Empirical evidence indicates that for a particular combination of ball and paste alloys and reflow temperature the extent to which the ball alloy is consumed by mixing with the paste alloy is dependent on the volume of paste deposited on the pad. If this promising method of achieving lower process temperatures is to be implemented in mass production without compromising reliability it would be necessary to have a method of ensuring the optimum proportion of ball alloy left in the joint after reflow can be consistently maintained. In this paper the author explains how the volume of low melting point alloy paste that delivers the optimum proportion of retained ball alloy for a particular reflow temperature can be determined by reference to the phase diagrams of the ball and paste alloys. The example presented is based on the equilibrium phase diagram of the binary Bi-Sn system but the method could be applied to any combination of ball and paste alloys for which at least a partial phase diagram is available or could be easily determined.
· What is the difference between SMT vacuum reflow soldering machine and ordinary reflow soldering machine? · What problems can be solved by smt vacuum reflow soldering machine? · What is the basic principle of vacuum reflow machine? · Ho
DIP Double-side Camera Online AOI Machine ETA-V5300 If you could not find any similar items you want, you may send some photos to us. because our catalog and website haven't included all of our products. solder paste inspection,SMT SPI,SPI mac
Events Calendar | Mon Mar 16 00:00:00 EDT 2020 - Mon Mar 16 00:00:00 EDT 2020 | ,
BGA & Area Array Failures, Causes & Corrective Actions Online Webinar
Events Calendar | Tue Apr 13 00:00:00 EDT 2021 - Tue Apr 13 00:00:00 EDT 2021 | ,
Boston Chapter Webinar: Cleaning Chemistry For PWB and Rework - Part 2, session 1
Career Center | Wesley Chapel, Florida USA | Engineering,Management,Quality Control
15 years of experience on Electronic Manufacturing. Certified SMT Process Engineer TQM Knowledge Statistics DOE Screen Printer Thermal Process Knowledge JIT International Project Engineering Experience
Career Center | , | Engineering,Production
Project Management, SMT Process Engineering
Reliability of BGA Solder Joints after Re-Balling Process SMTnet Express October 4, 2012, Subscribers: 25550, Members: Companies: 9004, Users: 33746 Reliability of BGA Solder Joints after Re-Balling Process First published in the 2012 IPC APEX EXPO
Heller Industries Inc. | https://hellerindustries.com/solder-ball-defects/
. Their formation is promoted by excessive oxides in the solder paste that inhibit solder coalescence during reflow. Solder ball defects are probably the most common reflow solder defect, and there are many causes of solder ball defects beyond the system that will contribute to their formation
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resource-center/solder-selection-guide
. The following are a few examples of flux characteristics that modify how a solder paste performs. Restricted Residue NC 26D04 flux residue remains either on or very close to the fillet after reflow
winsouce.jpg)
