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SMTnet - where else would you meet over 500,000 industry professionals? GPD Global - high quality, precision, automated fluid dispensing systems

SMTnet Express, January 18, 2018, Subscribers: 31,180, Companies: 10,857, Users: 24,296

Technical Library

Fine Pitch Cu Pillar with Bond on Lead (BOL) Assembly Challenges for High Performance Flip Chip Package

Nokibul Islam, Vinayak Pandey, KyungOe Kim; STATS ChipPAC Inc

Fine pitch copper (Cu) Pillar bump has been growing adoption in high performance and low-cost flip chip packages. Higher input/output (I/O) density and very fine pitch requirements are driving very small feature sizes such as small bump on a narrow pad or bond-on-lead (BOL) interconnection, while higher performance requirements are driving increased current densities, thus assembling such packages using a standard mass reflow (MR) process and maintaining its performance is a real and serious challenge. (...)

In this study a comprehensive finding on the assembly challenges, package design, and reliability data will be published.

Originally published in the SMTA International 2016

Forum search results for related keywords: flip-chip, fine pitch.

SMT / PCB Products


Pick & Place

Count On Tools

IPC Apex booth # 1613

Coating Equipment

GPD Global

IPC Apex booth # 3325



IPC Apex booth # 3723

Solder Paste Stencils

BEST, Inc.

Selective Soldering


IPC Apex booth # 3925



IPC Apex booth # 2132

Hand Assembly

Virtual Industries

IPC Apex booth # 3852



IPC Apex booth # 3301





IPC Apex booth # 2523



IPC Apex booth # 3449



IPC Apex booth # 1833






IPC Apex booth # 3825

SMT / PCB Equipment Auctions

Surplus Late Model SMT Equipment

Mydata, Yestech, Aqueous Technologies...

February 12 - 14 | X-Line

Late SMT Circuit Board Facility

2 SMT Lines & AOI, X-Ray Inspection Equipment

January 30 | Tauber-Arons

Electronic Equipment Mart

Assembleon MC1

Chipshooters / Chip Mounters

IBE SMT Equipment

IPC Apex booth # 843

ASC International SP3D

Inspection Equipment

X-Line Asset Management

MPM SP200 Semi Auto Screen Printer

Screen Printing Equipment

Recon Inc

Universal Instruments GC120

Pick and Place Equipment/Feeders

KD Electronics Ltd.

Pillarhouse Jade S-200

Selective Solder

Capital Equipment Exchange

PCB Conveyors


JMW Enterprises

Events Calendar

IPC Apex Expo 2018 | February 24 - March 1 | IPC

Pan Pacific Microelectronics Symposium 2018 | February 5 - 8 | SMTA

IPC-A-610 "G" and IPC J-STD-001 "G" Changes Webinar | January 29 | BEST Inc.

Digital X-Ray Inspection Services Open House | January 23 | VJ Electronix

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

Career Center

Senior Design Engineer

Murphy, NC

Aegis Power Systems

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 | Upcoming Events


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 | Online Store | Upcoming Events

Technical Editor - Davef (submit your technical articles)

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


Used PCB Assembly Equipment - CE Exchange

Delta Solder Materials from Qualitek for Ultra-Fine Pitch printing.

KIC - Making Reflow Ovens Smarter

Why Use Plasma Treatment Prior To Conformal Coating. Download the 'The Effects of Plasma Treatment Prior to Conformal Coating' White Paper.

Speedprint SP700avi inline SMT screen printer

Software for PCB Manufacturing - Unisoft

SMT, PTH, AOI & Test Equipment

Metcal CV-5200 Connection Validation Soldering System

Quality Pre-Owned SMT Eequipment - Robo-Tek

MIRTEC MV 6 OMNI High-Speed / High-Performance 3D AOI

Used SMT Equipment - IBE

PCB Cleaning products - Zestron

QWIKTRAY - custom component handling matrix tray - Count on Tools

Fully automatic selective soldering stations - 1 Click SMT - Inline with multiple modules, or standalone for cost effective soldering solutions. - Rework Tools

Vacuum Tweezers - pick up small components with ease

HELLER - Choose an Oven for Your Reflow Needs

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