New SMT Equipment: pillow defect on qfp (1)

SEC 6300AXI(3D CT) - In-Line 3D CT AXI

SEC 6300AXI(3D CT) - In-Line 3D CT AXI

New Equipment | Inspection

In-Line X-ray Inspection System Automatically in-line inspect Solder joint defects of PCBA and other defects on Hidden Components. Able to judge Good/NG fast with inspection speed of 1sec/FOV and the program can set ROIs conveniently. Performing X-r

SEC

Electronics Forum: pillow defect on qfp (7)

AOI-problems lifted lead on qfp-100

Electronics Forum | Wed Sep 29 05:30:59 EDT 2010 | patejl

Hi We have a problem here in the company with AOI system, most of the problem is lifted lead on qfp components.We are using SAKI BF-planet-x. Most of the defects like mising components 603 or 402 are no problem but if it comes to lifted lead even

AOI-problems lifted lead on qfp-100

Electronics Forum | Tue Oct 05 02:57:41 EDT 2010 | patejl

Reese is right. We use algorithm our AOI but the make it find liftead lead on qfp or such... it took me all day to set program and even then some defects pass so that is why Im asking..

Industry News: pillow defect on qfp (19)

SMTA Announces International Conference on Soldering and Reliability (ICSR) Program

Industry News | 2013-04-02 17:20:44.0

The SMTA is pleased to announce the program for the 2013 International Conference on Soldering and Reliability being held May 14-17 in Toronto, Ontario, Canada.

Surface Mount Technology Association (SMTA)

SMTA Announces International Conference on Soldering and Reliability (ICSR) Program

Industry News | 2015-03-02 11:42:19.0

The SMTA is pleased to announce the program for the 9th Annual International Conference on Soldering and Reliability being held May 19-21, 2015 in Markham, Ontario, Canada. The event will be co-located with the SMTA Toronto Expo.

Surface Mount Technology Association (SMTA)

Technical Library: pillow defect on qfp (2)

Effects of Package Warpage on Head-in-Pillow Defect

Technical Library | 2017-07-06 15:50:17.0

Head-in-pillow (HiP) is a BGA defect which happens when solder balls and paste can't contact well during reflow soldering. Package warpage was one of the major reasons for HiP formation. In this paper, package warpage was measured and simulated. It was found that the package warpage was sensitive to the thickness of inside chips. A FEM method considering viscoelastic property of mold compound was introduced to simulate package warpage. The CTE mismatch was found contributes to more than 90% of the package warpage value when reflowing at the peak temperature. A method was introduced to measure the warpage threshold, which is the smallest warpage value that may lead to HiP. The results in different atmospheres showed that the warpage threshold was 50μm larger in N2 than that in air, suggesting that under N2 atmosphere the process window for HiP defects was larger than that under air, which agreed with the experiments.

Samsung Electronics

Effects of Temperature Uniformity on Package Warpage

Technical Library | 2019-10-03 14:27:01.0

Knowing how package warpage changes over temperature is a critical variable in order to assemble reliable surface mount attached technology. Component and component or component and board surfaces must stay relatively flat with one another or surface mount defects, such as head-in-pillow, open joints, bridged joints, stretched joints, etc. may occur. Initial package flatness can be affected by numerous aspects of the component manufacturing and design. However, change in shape over temperature is primarily driven by CTE mismatch between the different materials in the package. Thus material CTE is a critical factor in package design. When analyzing or modeling package warpage, one may assume that the package receives heat evenly on all sides, when in production this may not be the case. Thus, in order to understand how temperature uniformity can affect the warpage of a package, a case study of package warpage versus different heating spreads is performed.Packages used in the case study have larger form factors, so that the effect of non-uniformity can be more readily quantified within each package. Small and thin packages are less prone to issues with package temperature variation, due to the ability for the heat to conduct through the package material and make up for uneven sources of heat. Multiple packages and multiple package form factors are measured for warpage via a shadow moiré technique while being heated and cooled through reflow profiles matching real world production conditions. Heating of the package is adjusted to compare an evenly heated package to one that is heated unevenly and has poor temperature uniformity between package surfaces. The warpage is measured dynamically as the package is heated and cooled. Conclusions are drawn as to how the role of uneven temperature spread affects the package warpage.

Akrometrix

Videos: pillow defect on qfp (1)

[SEC] 3D In-line AXI Solution X-eye 6300 X-ray Inspection Machine

[SEC] 3D In-line AXI Solution X-eye 6300 X-ray Inspection Machine

Videos

3D In-line Automated X-ray Inspection system (machine) Model: X-eye 6300 X-ray Tube: 160kV / 500 µa Table Size: Max. 330 x 250mm Min. 50 x 50mm Detector: 12 inch FPXD Defection type (Application): BGA, PoP, chip, QFN, QFP, etc. - High-speed In-lin

SEC

Express Newsletter: pillow defect on qfp (294)

SMTnet Express - March 06, 2014

SMTnet Express, March 06, 2014, Subscribers: 22524, Members: Companies: 13810, Users: 35835 Investigation and Development of Tin-Lead and Lead-Free Solder Pastes to Reduce the Head-In-Pillow Component Soldering Defect. Jasbir Bath, Roberto Garcia

SMTnet Express - July 2, 2020

SMTnet Express, July 2, 2020, Subscribers: 28,589, Companies: 11,034, Users: 25,930 A PROCEDURE TO DETERMINE HEAD-IN-PILLOW DEFECT AND ANALYSIS OF CONTRIBUTING FACTORS Credits: Cookson Electronics Head-in-Pillow (HIP) defects are a growing concern

Partner Websites: pillow defect on qfp (16)


pillow defect on qfp searches for Companies, Equipment, Machines, Suppliers & Information

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Count On Tools, Inc.
Count On Tools, Inc.

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.

Manufacturer

2481 Hilton Drive
Gainesville, GA USA

Phone: (770) 538-0411