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SMTnet Express, March 06, 2014, Subscribers: 22524, Members: Companies: 13810, Users: 35835

Technical Library

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

Jasbir Bath, Roberto Garcia; Christopher Associates Inc., Noriyoshi Uchida, Hajime Takahashi, Gordon Clark, Manabu Itoh; Koki Solder.

Figure 1: Head in Pillow component soldering defect

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.

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Forum search results for related keywords: head in pillow, soldering defects, warpage.

SMT / PCB Products

MS-11 Series
In-Line AOI Machine

by: Mirtec

in: Inspection

Solder Paste


in: Solder Materials

Monitoring System


in: Cleaning

Pick & Place System

by: Europlacer

in: Pick & Place


by: Unisoft

in: Software

JewelBox Real-time X-ray Inspection...

by: Glenbrook Tech.

in: Inspection

PVA6000 Coating and Dispensing System

by: PVA

in: Dispensing

TruView - Fully Modular X-Ray System

by: Creative Electron

in: Inspection

MAX II High Precision Fluid Dispenser

by: GPD Global

in: Dispensing

Mark5 Series -
Reflow System
The Mark III Reflow System

by: Heller

in: Reflow

Stencil Printer

SP700avi Inline Stencil Printer

by: Speedprint

in: Printing

EXCEN PRO High Speed
Modular Mounter


in: Pick & Place

SMT / PCB Equipment Auctions

Complete Closure/Liquidation of SMT Thru-Hole, and Test Equipment Division. 2000 Lots...

April 8 - 10 | Auction by: X-Line Asset Management

Electronic Equipment Mart

Asymtek Century C-740
Conformal Coater

IBE SMT Equipment

in: Adhesive Dispensing

Crown Simplimatic Reflow Exit Conveyor


in: Conveyors

SEHO Go Selective Light
Selective Soldering...

CE Exchange

in: Soldering Equipment

CR Tech CRX 2000
X-Ray Inspection...


in: X-Ray Equipment

Mydata My12
Pick and Place

JMW Enterprises

in: Pick and Place

Fuji NXT M3s and M6s


in: Chipshooters

PCBA Equipment
Spare Parts


in: Parts & Supplies

Rehm VXs 632
Reflow Oven

AdoptSMT Europe

in: Reflow Ovens

Events Calendar


Las Vegas, NV, USA | March 25 - 27 | IPC More than 400 exhibitors showing equipment, materials, services for electronics manufacturing...

National Electronics Week 2014

Birmingham, UK | April 8 - 10 | NEW Events Ltd - UK's number one electronics exhibition...

Design and Executing a DOE for a High-Reliability Cleaning Process - Online Webinar

Online | April 24 | ZESTRON Corporation - Insight to why it is important to fully clean electronic assemblies...

Career Center


SMT Laser Tech

Ft Wayne, IN, USA | Metal Etching Technology

Applications Engineer

Grand Junction, CO, USA | GPD Global

Inside Sales Trainee

Santa Cruz, CA, USA | SMT Parts, Inc.


Applications Engineer

Worcester, MA, USA

SMT Service Maintenance Technician

Cavite, Philippines

SMT Process Engineer

Poway, CA, USA

Industry Associations Events


SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies.

Membership Info | SMTA Certification | Bookstore

Next Event: SMTA Webtorial Tin Whiskers � All You Should Know - March 11-13


IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly.

Membership Info | Training & Certification Programs | Standards & Publications - Online Store

Next Event: IPC Designer Certification sessions (CID and CID+) in conjunction with IPC APEX EXPO 2014 - March 21 - 23

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

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Used PCB Assembly Equipment - CE Exchange

The Spectrum II Series Scalable Fluid Dispensers for Assembly of Semiconductors, MEMS, Storage Devices, and PCBs - Asymtek

LOCTITE HF 212 Halogen-Free Solder Paste

Used SMT Equipment

PCB Cleaning products - Zestron

IPC Apex Expo 2014

ii-Feed tape feeding solution for Europlacer machines

Fluid Pressure Control - a breakthrough in uniform fluid dispensing - GPD Global

Mark5 SMT Reflow Oven - Heller

SP700avi inline smt screen printer - Speedprint

Global Source for Advanced SMT Solder Products - Amtech

Real Time X-Ray Inspection Systems - Glenbrook Technologies

Used SMT Equipment - IBE

Europe's No. 1 source for pre-owned SMT equipment - AdoptSMT

Pre-Owned Quad, MPM Equipment - PPM

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