New Equipment | Rework & Repair Services
BEST's QFN Rework Services Can Save Your Design and Save You Money BEST Inc. provides a variety of QFN rework services including the most popular QFN package styles. BEST has lots of experience in minimizing the voiding in QFN rework. BEST can mini
New Equipment | Solder Paste Stencils
Simplify and Speed Up QFN and LGA device rework. StencilMate™ leadless device rework stencils make the process of reworking leadless devices such as QFNs and LGAs simple and fast. These adhesive-backed poyimide stencils are placed on to the bottom o
Electronics Forum | Thu Apr 23 15:46:08 EDT 2009 | ccross
During initial profiling we shoot for 15% or less voiding on our BGAs. During production runs we consider voids under 15% to be ok. Voiding between 15%-25% we string tag and pay more attention to during test. Over 25% we consider a reject.
Electronics Forum | Tue May 10 20:23:52 EDT 2005 | davef
Dr Lee at Indium has written extensively on voiding, Check their site for papers.
Used SMT Equipment | X-Ray Inspection
• Installed new in 2006 • Single Owner and used in a Lab Environment • Maintained by OEM and under OEM ASC, throughout original ownership • Currently offline and immediately available Tube Type: 160kv NF – Transmissive type (open tube ~ maintain
Used SMT Equipment | Adhesive Dispensers
USED - FUJI GL-V 5000 GLUE MACHINE TERMS: Items listed under USED condition are not tested, condition is not known and the item is being sold “AS IS” unless stated otherwise. Condition of item will be n
Industry News | 2011-09-14 12:04:43.0
The SMTA announced a session on QFN Assembly and Reliability will take place on Tuesday, October 18 during their annual conference, SMTA International, in Ft. Worth, Texas. Andrew Mawer of Freescale Semiconductor will chair the session and Viswam Puligandla, Ph.D., Nokia (Retired) will co-chair.
Industry News | 2018-04-11 20:04:01.0
SMTA Europe announces Session 3 Technical Program on Advanced Test Methods at the “Electronics in Harsh Environments Conference” to be held in Amsterdam, Netherlands, on April 25th, 2018.
Technical Library | 2014-09-11 11:36:46.0
There are a variety of methods one can use to rework QFNs. This paper explains one of the ways to get very little center ground voiding while making it easy to place a tiny component with almost no keep out areas.
Technical Library | 2013-02-08 22:56:47.0
Solder voiding is present in the majority solder joints and is generally accepted when the voids are small and the total void content is minimal. X-ray methods are the predominate method for solder void analysis but this method can be quite subjective for non grid array components due to the two dimensional aspects of X-ray images and software limitations. A novel method of making a copper "sandwich" to simulate under lead and under component environs during reflow has been developed and is discussed in detail. This method has enabled quantitative solder paste void analysis for lead free and specialty paste development and process refinement. Profile and paste storage effects on voiding are discussed. Additionally an optimal design and material selection from a solder void standpoint for a heat spreader on a BCC (Bumpered Chip Carrier) has been developed and is discussed.
· 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
Events Calendar | Mon Apr 23 00:00:00 EDT 2018 - Thu Apr 26 00:00:00 EDT 2018 | Shanghai, China
SMTA China East Conference 2018
Events Calendar | Wed Mar 07 00:00:00 EST 2018 - Wed Mar 07 00:00:00 EST 2018 | ,
Solder Paste Qualification Testing - SMTA Webinar
Career Center | Oldsmar, Florida USA | Maintenance,Production
Job Description: • Uses microscope to verify correct part placement and orientation, manually align parts before soldering and perform post re-flow inspection and touch-up. • Able to identify and touch up poor wetted solder joints, solder voids / i
Minimizing Voiding In QFN Packages Using Solder Preforms SMTnet Express July 27, 2012, Subscribers: 25333, Members: Companies: 8933, Users: 33366 Minimizing Voiding In QFN Packages Using Solder Preforms First published in the 2012 IPC APEX EXPO
| https://www.smtfactory.com/I-C-T-SMT-Vacuum-Reflow-Oven-Machine-helps-you-to-solve-the-problem-of-High-Solder-Voids-Rates-id45973467.html
I.C.T SMT Vacuum Reflow Oven Machine helps you to solve the problem of High Solder Voids Rates - I.C.T SMT Machine English Bahasa indonesia Сербия
| https://pcbasupplies.com/s3x58-m650-7-600gm/
residue over the solder joint, which helps the testing probe to get the accurate readings to improve the first pass rate. Resistance between Probe and PCB Superior wetting ability prevents voiding For smaller components such as QFNs, micro BGA and LGA, bigger voids could occupy majority of the pad area thus creating a
