New Equipment | Curing Equipment
A Pressure Cure Oven (PCO), or Autoclave, is used to minimize voiding and increase adhesion strength for bonding processes typically used in die attach and underfill applications. PCO pressurizes air into a rigid vessel and heats & cools with
New Equipment | Education/Training
This specification covers qualification and performance of rigid PCBs including with or without plated-through holes, single-sided, double-sided, multilayer with or without blind/buried vias and metal core boards. It addresses final finish and surfac
Electronics Forum | Thu Aug 15 15:58:12 EDT 2002 | robertnguyen
To whom this may concern, I recently ran into the problem with vias on pads of BGA when place BGA and reflow gas trap on vias escape and result in ball having void greater than 50% of BGA diameter. The BGA pad is measured at 20 mils and the vias mea
Electronics Forum | Fri Aug 16 09:59:49 EDT 2002 | dason_c
We baked the board first and print 2 mil water soluble paste at the BGA location and reflow. Wash and baked before the production run.
Used SMT Equipment | X-Ray Inspection
Dage X Ray Inspection Machine Model: XD7500 Year: 2004 S/N: X23484 Dage NT950 "sealed transmissive", "filament-free" X ray tube *NEEDS REPLACEMENT Includes: • Lead-shielded system safety cabinet with lead-glass view window in sample door (X-r
Industry News | 2018-08-16 19:58:50.0
The SMTA Capital Chapter is holding its upcoming Capital Expo and Tech Forum at Johns Hopkins University / Applied Physics Lab, Kossiakoff Center, 11100 Johns Hopkins Road, Laurel, MD 20723, on Thursday, August 23rd.
Industry News | 2018-12-08 03:29:29.0
SMT Dictionary – Surface Mount Technology Acronym and Abbreviation
Technical Library | 2019-10-10 00:26:28.0
Voids are a plague to our electronics and must be eliminated! Over the last few years we have studied voiding in solder joints and published three technical papers on methods to "Fill the Void." This paper is part four of this series. The focus of this work is to mitigate voids for via in pad circuit board designs. Via holes in Quad Flat No-Lead (QFN) thermal pads create voiding issues. Gasses can come out of via holes and rise into the solder joint creating voids. Solder can also flow down into the via holes creating gaps in the solder joint. One method of preventing this is via plugging. Via holes can be plugged, capped, or left open. These via plugging options were compared and contrasted to each other with respect to voiding. Another method of minimizing voiding is through solder paste stencil design. Solder paste can be printed around the via holes with gas escape routes. This prevents gasses from via holes from being trapped in the solder joint. Several stencil designs were tested and voiding performance compared and contrasted. In many cases voiding will be reduced only if a combination of mitigation strategies are used. Recommendations for combinations of via hole plugging and stencil design are given. The aim of this paper is to help the reader to "Fill the Void."
Technical Library | 2024-07-24 01:18:03.0
Quad Flat No-Lead (QFN) packages has become very popular in the industry and are widely used in many products. These packages have different size and pin counts, but they have a common feature: thermal pad at the bottom of device. The thermal pad of the leadless QFN provides efficient heat dissipation from the component to PCB. In many cases, arrays of the thermal via under the component is used to dissipate heat from the device. However, thermal vias can create more voids or result in solder protrusion onto the secondary side.
General curing, die attach curing, underfill curing, film & tape bonding, wafer laminating.
This video describes the IPC A-600 training and certification program. The IPC A-600 specification is a set of acceptability specifications for printed circuit boards. These standards determine the acceptance and reject criteria for printed wiring bo
Training Courses | | | IPC-6012 Specialist (CIS)
The Certified IPC-6012 Specialist (CIS) training covers design, fabrication and inspection of rigid printed boards.
Training Courses | | | 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 | Thu Oct 03 00:00:00 EDT 2019 - Thu Oct 03 00:00:00 EDT 2019 | ,
IPC Tech Ed Webinar Series: Ball Grid Array (BGA) and Bottom Termination Component (BTC) Design and Assembly Challenges: Reflow Profiling to Achieve Low Defect Rates and Successful Assembly! – Part 2
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
SMTnet Express, October 10, 2019, Subscribers: 32,263, Companies: 10,893, Users: 25,93 Fill the Void IV: Elimination of Inter-Via Voiding Credits: FCT ASSEMBLY, INC. Voids are a plague to our electronics and must be eliminated! Over the last few
SMTnet Express, October 3, 2018, Subscribers: 31,373, Companies: 11,056, Users: 25,258 Fill the Void II: An Investigation into Methods of Reducing Voiding Tony Lentz - FCT Assembly , Patty Chonis, JB Byers - A-Tek Systems Voids in solder joints
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/0402-capacitors-under-1-mm-pitch-bga_topic695_post2385.html
and ready for reflow with BGA fanout on one side and capacitor pad on the other side. With capacitors, a small "dimple" (with trapped air) in the pad would not create a void cavity in the lead like they do in BGA via-in-pad
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