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SMTnet - where else would you meet over 500,000 industry professionals? SMTAI 2015 Electronics Manufacturing Conference & Expo

SMTnet Express, July 22, 2015, Subscribers: 23,004, Members: Companies: 14,461 , Users: 38,507

Technical Library

Reliability Study of Bottom Terminated Components

Jennifer Nguyen, Hector Marin, David Geiger, Anwar Mohammed, Murad Kurwa; Flextronics International.

Bottom terminated components (BTC) are leadless components where terminations are protectively plated on the underside of the package. They are all slightly different and have different names, such as QFN (quad flat no lead), DFN (dual flat no lead), LGA (land grid array) and MLF (micro lead-frame. BTC assembly has increased rapidly in recent years. This type of package is attractive due to its low cost and good performance like improved signal speeds and enhanced thermal performance.

However, bottom terminated components do not have any leads to absorb the stress and strain on the solder joints. It relies on the correct amount of solder deposited during the assembly process for having a good solder joint quality and reliable reliability. Voiding is typically seen on the BTC solder joint, especially on the thermal pad of the component (...) This paper will present some data to address these concerns.

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Forum search results for related keywords: BTC, LGA, QFN, voiding.

SMT / PCB Products

Material Handling/Storage

SMTDryBoxes.com

Inspection

Mirtec

Printing

Speedprint

Dispensing

GPD Global

Dispensing

Nordson Asymtek

Software

Aegis Software

Pick & Place

Europlacer

Reflow

Heller

Solder Paste Stencils

BEST, Inc.

Cleaning

Kyzen

Inspection

SEC

Test

Siborg Systems

Inspection

VJ Electronix

Software

KIC

Wave Soldering

Juki

Inspection

Scienscope

SMT / PCB Equipment Auctions

Late Model SMT Equipment Including 3 Fuji SMT Lines

July 28 - 29 | X-Line Asset Management

Online SMT Exchange Auction (Featuring Items From e-Tronics)

August 10 - 12 | Baja Bid

Electronic Equipment Mart

Panasonic RL-131 Radial Lead Inserter

PTH Equipment

Robo-Tek

Vitronics XPM-1030 Reflow Oven

Reflow Ovens

IBE SMT Equipment

Conveyors

Conveyors

JMW Enterprises

Camalot FXD

Adhesive Dispensing Equipment

PPM

Creative Electron TruView Prime

X-Ray Equipment

Capital Equipment Exchange

Universal Instruments 4688A

Chipshooters / Chip Mounters

Baja Bid

Pillarhouse Ruby

Wave Solder Equipment

Tekmart International Inc.

Cyberoptics SE300 Ultra

AOI / Automated Optical Inspection

X-Line Asset Management

Pick and Place

Pick and Place Equipment

Shenzhen Tek...

Events Calendar

2015 PCB Cleaning Webinar Series

Online Webinar | ZESTRON

SMTA International Conference & Exhibition 2015

Conference, Trade Show/Exhibition | September 27- October 1 | SMTA

Webinar: Flex & Rigid-Flex PCB's - Applications and Cost Drivers

Online Webinar | August 28 - 28 | Epec Engineered Technologies

Career Center

Jobs:

Software Engineering

Littleton, CO, USA | Lockheed Martin Corporation

Sales Representative

Mexico | Apex Factory Automation

Technical Sales Engineer

San Jose, CA, USA | YINCAE Advanced Materials, LLC.

Resumes:

Bachelor of Engineering in Electric and Electronics

Oppurg, Israel

Industry Associations Events

SMTA

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: Free Webinar: Power and High Temp Electronics Manufacturing - September 10

IPC

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: PCB West - September 15 - 17

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard

SMTnet.com, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

Used PCB Assembly Equipment - CE Exchange

Software for PCB Manufacturing - Unisoft

All you want to know about BOUNDARY-SCAN

VisionPro Series Bench Top 3D SPI - the ultimate in flexibility

DownStream Technologies - software for post processing PCB designs.

Essemtec Paraquda Multifunctional SMT Center ?One Machine Platform for All Tasks

Custom SMT Nozzles - Count on Tools

PCB Cleaning products - Zestron

Aegis FactoryLogix Paperless Shop Floor Software - Add value, reduce costs and eliminate risk in manufacturing.

ii-Feed intelligent pick and place feeder

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

HELLER - Choose an Oven for Your Reflow Needs

Whatever the SMT manufacturing need, JUKI has you covered.

MIRTEC - the Global Leader in PCB INSPECTION Technology.

Speedprint SP700avi inline SMT screen printer

MIRAE Mx400 series high speed pick and place

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