Electronics Forum: the head-in-pillow (1)

BGA drop off from the boards

Electronics Forum | Fri May 23 11:14:15 EDT 2014 | rboguski

Agree with previous comment regarding possible head-in-pillow. Use 3D x-ray or CT-scan to verify.

Industry News: the head-in-pillow (15)

The SMTA Capital Chapter to Host Final Meeting of the Year on November 10th at Zentech

Industry News | 2016-10-09 20:43:23.0

The SMTA Capital Chapter is pleased to announce its final meeting of 2016 will be on November 10th, from 5:00 pm to 7:00 pm at Zentech, 6980 Tudsbury Road, Baltimore, Maryland 21244. The focus of this chapter meeting will be “AXI and MXI; How They Complement Each Other” presented by John Travis, Nordson Dage.

Surface Mount Technology Association (SMTA)

Come. Focus. Participate in the industry's best conference. The SMTA International Technical Committee invites you to submit an abstract for the 2010 conference.

Industry News | 2010-05-07 16:01:14.0

New this year! The SMTA International Technical Committee invites you to participate in a poster session at SMTA International. Poster sessions are presented on the show floor and are a great way to present current research and results in a concise manner without requiring a technical paper.

Surface Mount Technology Association (SMTA)

Technical Library: the head-in-pillow (2)

Addressing the Challenge of Head-In-Pillow Defects in Electronics Assembly

Technical Library | 2013-12-27 10:39:21.0

The head-in-pillow defect has become a relatively common failure mode in the industry since the implementation of Pb-free technologies, generating much concern. A head-in-pillow defect is the incomplete wetting of the entire solder joint of a Ball-Grid Array (BGA), Chip-Scale Package (CSP), or even a Package-On-Package (PoP) and is characterized as a process anomaly, where the solder paste and BGA ball both reflow but do not coalesce. When looking at a cross-section, it actually looks like a head has pressed into a soft pillow. There are two main sources of head-in-pillow defects: poor wetting and PWB or package warpage. Poor wetting can result from a variety of sources, such as solder ball oxidation, an inappropriate thermal reflow profile or poor fluxing action. This paper addresses the three sources or contributing issues (supply, process & material) of the head-in-pillow defects. It will thoroughly review these three issues and how they relate to result in head-in pillow defects. In addition, a head-in-pillow elimination plan will be presented with real life examples will be to illustrate these head-in-pillow solutions.

Indium Corporation

Investigation and Development of Tin-Lead and Lead-Free Solder Pastes to Reduce the Head-In-Pillow Component Soldering Defect.

Technical Library | 2014-03-06 19:04:07.0

Over the last few years, there has been an increase in the rate of Head-in-Pillow component soldering defects which interrupts the merger of the BGA/CSP component solder spheres with the molten solder paste during reflow. The issue has occurred across a broad segment of industries including consumer, telecom and military. There are many reasons for this issue such as warpage issues of the component or board, ball co-planarity issues for BGA/CSP components and non-wetting of the component based on contamination or excessive oxidation of the component coating. The issue has been found to occur not only on lead-free soldered assemblies where the increased soldering temperatures may give rise to increase component/board warpage but also on tin-lead soldered assemblies.

Christopher Associates Inc.

Express Newsletter: the head-in-pillow (12)

SMTnet Express - December 27, 2013

SMTnet Express, December 27, 2013, Subscribers: 26441, Members: Companies: 13537, Users: 35564 Addressing the Challenge of Head-In-Pillow Defects in Electronics Assembly by Mario Scalzo; Indium Corporation While the electronics manufacturing

SMTnet Express - July 6, 2017

SMTnet Express, July 6, 2017, Subscribers: 30,558, Companies: 10,626, Users: 23,470 Effects of Package Warpage on Head-in-Pillow Defect Zhenyu Zhao, Chuan Chen, Yuming Wang, Lei Liu, Guisheng Zou, Jian Cai and Qian Wang - Tsinghua University

Partner Websites: the head-in-pillow (116828)

Multifunctional volume optimization in the carton erector

ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/adhesive-dispensing-systems/about-adhesives/news-search/multifunctional-volume-optimization

Multifunctional volume optimization in the carton erector Adhesive Dispensing Systems Corporate | Global Directory | Languages Division Only All of Nordson Home Products Accessories - Auxiliary Equipment

ASYMTEK Products | Nordson Electronics Solutions

Sunliquid® among the TOP3 in the category car mobility at the GreenTec Awards 2015

| https://www.clariant.com/en/Corporate/News/2015/02/Sunliquid-nominated-for-the-GreenTec-Awards-2015

Sunliquid® among the TOP3 in the category car mobility at the GreenTec Awards 2015 Search Share Region Contact Close Close Search If you are searching for Safety Data Sheets, please visit our Document Finder


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The Branford Group
The Branford Group

A global industrial auction and valuation business with extensive experience in SMT, PCB Assembly & Manufacturing, Test, Semiconductor and other Electronics Machinery & Equipment.

Manufacturer / Equipment Dealer / Broker / Auctions

896 Main Street
Branford, CT United Arab Emirates

Phone: 203-488-7020