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SMTnet Express, January 26, 2023, Subscribers: 24,669, Companies: 11,705, Users: 27,703

█ Electronics Manufacturing Technical Articles

Failure analysis (FA), by its very nature, is needed only when things goawry. Before any testing is performed on the sample, a decision mustbe made as to whether or not the sample is allowed to be destroyedin the process of testing. Non-destructive testing can allow for re-use of the assembly since the functionality is not altered, but there still remains the possibility that inadvertent damage can occur through the course of the analysis. If non-destructive testing is preferred, then the following types of analysis can be performed. The testing can be divided into four categories: visual, X-ray (X-ray imaging and X-ray fluorescence), cleanliness (resistivity of solvent extract, ion chromatography, and Fourier transform infrared spectroscopy), and mechanical (non-destructive wire bond pull).

Credit: ACI Technologies, Inc.

Micro-Sectioning of PCBs for Failure Analysis

Micro-sectioning (sometimes referred to as cross-sectioning)is a technique, used to characterize materials or to perform a failure mode analysis, for exposing an internal section of a PCB or package. Destructive in nature, cross-sectioning requires encapsulation of the specimen in order to provide support, stability, and protection. Failures that can be investigated through micro-sectional analysis include component defects, thermo-mechanical failures, processing failures related to solder reflow, opens or shorts, voiding and raw material evaluations.

Credit: BEST Inc.

Latent short circuit failure in high-rel PCBs caused by lack of cleanliness of PCB processes and base materials

Latent short circuit failures have been observed during testing of Printed Circuit Boards (PCB) for power distribution of spacecraft of the European Space Agency. Root cause analysis indicates that foreign fibers may have contaminated the PCB laminate. These fibers can provide a pathway for electromigration if they bridge the clearance between nets of different potential in the presence of humidity attracted by the hygroscopic laminate resin. PCB manufacturers report poor yield caused by contamination embedded in laminate. Inspections show ...

Credit: European Space Agency

Failure Analysis

Analyzing failures is a critical process in determining the physical root causes of problems. The process is complex, draws upon many different technical disciplines, and uses a variety of observation, inspection, and laboratory techniques. One of the key factors in properly performing a failure analysis is keeping an open mind while examining and analyzing the evidence to foster a clear, unbiased perspective of the failure.

Credit: ASM International

Failure Analysis — Using Ion Chromatography And Ion Chromatography/Mass Spec (IC/MS)

Since the 1980s the electronics industry has utilized ion chromatography (IC) analysis to understand the relationship of ions, and some organics, to product reliability. From component and board fabrication to complete electronic assemblies and their end-use environment, IC analysis has been the de facto method for evaluating ionic cleanliness of electronic hardware.

Credit: Foresite Inc.

Applying Microscopic Analytic Techniques For Failure Analysis In Electronic Assemblies

The present paper gives an overview of surface failures, internal nonconformities and solders joint failures detected by microscopic analysis of electronic assemblies. Optical microscopy (stereomicroscopy) and Fourier-Transform- Infrared (FTIR) microscopy is used for documentation and failure localization on electronic samples surface. For internal observable conditions a metallographic cross-section analysis of the sample is required. The aim of this work is to present some internal and external observable nonconformities which frequently appear in electronic assemblies. In order to detect these nonconformities, optical microscopy, cross section analysis, FTIR-microscopy and scanning electron microscopy with energy dispersive spectrometry (SEM-EDS) were used as analytical techniques.

Credit: ZOLLNER ELECTRONICS, INC.

Mathematical Model For Dynamic Force Analysis Of Printed Circuit Boards

Mathematical model for dynamic force analysis of printed circuit boards has been designed to calculate dynamic deformations and stresses in printed circuit boards and assess their dynamic strength and rigidity. The represented model describes a printed circuit board as a separate oscillatory system, which is simulated as prismatic beam set on two oscillating supports. Simulation and assessment of stress and deflection in printed circuit boards and obtaining their amplitude frequency responses provided recommendations, which ensure strength and stiffness of printed circuit boards subjected to dynamic loads..

Credit: Khmelnytsky National University

SEE Forum results for related keywords - failure analysis -- 233

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█ Printed Circuit Board Assembly & PCB Design Forum

Line Performance data collection, -- Hello All, Can anyone suggest software for gathering line performance data, Needs to work with Panasonic and kohyoung equipment, Thanks

Preference on selective soldering brands? Used gear life? -- I'm looking at some Pillarhouse and Juki machines used. Does anyone have a strong preference on selective soldering brands? What's the life time on machine? Is buying a 10 year old machine a waste of time? What are you doing for nitrogen? I'm currently soldering connectors by hand and looking for something faster. Lead free.

SEARCH the PCB Assembly Forum VISIT the PCB Assembly Forum...

█ SMT, PCB Electronics Assembly Manufacturing Industry News

MIRTEC Reports 22.6% Increase in Sales Revenue for 2022

MIRTEC Co. LTD, reports continued growth in Sales Revenue for its North American Sales and Service Division for 2022. "We are very pleased to announce that sales revenue for our North American Division has grown by over 22.6% with respect to 2021." stated Brian D'Amico, President of MIRTEC Corp....

MIRTEC Corp

MIRTEC - Sales increased in 2022

IPC Offers Free Training Courses to Members

New member benefit provides ESD and safety training...

Association Connecting Electronics Industries (IPC)

IPC - Free Training Announcement

Altus Presents Turnkey Solutions at Leading Manufacturing and Electronics Exhibition

Altus Group is looking forward to welcoming visitors to its stand at the Southern Manufacturing and Electronics 2023, Stand J130, from 7 to 9th February 2023. The team will be available to discuss their range of innovative equipment and solutions to optimise electronic manufacturing processes and improve production through turnkey solutions....

Altus Group

Altus - Turnkey solutions

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█ SMT / PCB Products & Services

NEW SMT / PCB EQUIPMENT & SERVICES - For Sale

REFLOW OVEN

Voidless / Vacuum Reflow Soldering Oven

Heller

PCB DISPENSING

Island Series Table Top Dispensers

GPD Global

Inspection

I.C.T AOI Solution

I.C.T

SELECTIVE SOLDERING

Pillarhouse Jade Handex

Pillarhouse USA

PCB INSPECTION

MS-15 High Speed In-Line SPI System

Mirtec

PCB SOFTWARE

ProntoGERBER CONNECTION

Unisoft

VIEW More New Electronic Manufacturing Products...

█ SMT / PCB Assembly Equipment Auctions

Currently, no featured auctions are on SMTnet

VISIT the Assembly Equipment Auctions Calendar...

█ Electronic Equipment Mart

MART - Used Electronic Assembly Machines For Sale

P&P / FEEDERS

Chroma Test Handler Model 3111

World Equipment Source - Chroma Table Top Single Site Test Handler Model 3111

World Equipment Source, LLC

P&P / FEEDERS

Panasonic NPM-W P&P

AllSurplus Panasonic NPM-W P&P

AllSurplus

P&P / Feeders

Assembleon AX201

KD Electronics - Assembleon AX201

KD Electronics

AOI INSPECTION

Viscom S3088 Ultra Chrome 3D AOI

Lewis & Clark Viscom S3088 AOI

Lewis & Clark

Pick and Place/Feeders

Mydata MY100LXe-10

Baja Bid

PCB PRINTING

DEK NEOHORIZON 03iX

SMTUnion - DEK NEOHORIZON 03iX

SMTUnion

VIEW More Used Equipment For Sale... SEND a RFQ to Equipment Suppliers ....

MART - Used PCB Assembly Equipment Wanted To Buy

PCB TEST

Agilent 3070

Lewis & Clark Agilent 3070

Lewis & Clark

PCB TEST

Agilent 3070

KD Electronics Agilent 3070

KD Electronics

WIRE STRIPPERS

Autosplice SAS/2

Baja Bid - Autosplice SAS/2

Baja Bid

P&P / FEEDERS

Assembleon MG-1R

World Equipment Source Assembleon MG-1R

World Equipment Source, LLC

SEE Buyers' Used Assembly Equipment Wants

█ Electronics Manufacturing & Assembly Events Calendar

EVENTS

Pan Pacific Microelectronics Symposium | January 30 to February 2

SMTA

█ Electronics Manufacturing Training Courses & PCB Assembly Training

FIND TRAINING FOR:

IPC Certification

Soldering & Rework

PCB Design

Electronics Assembly

Electronics Inspection

Online Training

TRAINING - Electronics Manufacturing and PCB Assembly Training Courses

0 Electronics Manufacturing and PCB Assembly Training Courses - More planned

TRAINING - PCB Inspection Electronics Manufacturing Training Courses

IPC-A-640 Interactive PCB Inspection Lab (CIT or CIS Option)

Multiple dates and locations. Check the link for details

EPTAC Corporation

TRAINING - PCB Rework and Hand Soldering Training Courses

Customizable Basic Hand Soldering

Multiple dates and locations. Check the link for details

Blackfox Training Institute, LLC

TRAINING - Online Electronics Manufacturing and Assembly Training Courses

IPC J-STD-001 Trainer (CIT) Certification Online Live Training Course

Online/On-Demand

EPTAC Corporation

Live Online Training - IPC/WHMA-A-620 Expert (CSE) Certification Training Course

Online/On-Demand

ACI Technologies, Inc.

Live Online Training - IPC/WHMA-A-620 Trainer (CIT) Certification Training Course

Online/On-Demand

ACI Technologies, Inc.

Live Online Training - IPC-A-610 (CIT) Recert.

Online/On-Demand

ACI Technologies, Inc.

Reflow Soldering 101 Training Course

Online/On-Demand

Surface Mount Technology Association (SMTA)

Selective wave soldering academy

Online/On-Demand

Pillarhouse USA

Online IPC-A-610 Trainer (CIT) Training & Certification

Online/On-Demand

Blackfox Training Institute, LLC

VISIT All Electronics Manufacturing Training Courses...

█ Electronics Manufacturing & PCB Assembly Jobs

CAREER CENTER - Job Needs & Wants

JOBS - POST your job openings now

Quality Engineer

Brooksville, Florida, USA

Spartronics

Site Director

Watertown, South Dakota, USA

Spartronics

Senior Sales Executive- Aerospace & Defense- Remote- Anywhere in US

Williamsport, Pennsylvania, USA

Spartronics

Business Development Manager (REMOTE)

Minneapolis, Minnesota, USA

Spartronics

CEO

Shenzhen, China

Wiseinstrum Co.,Ltd.

Engineer

Clamart, France

MICROPORT CRM SAS

Test Engineer

Watertown, South Dakota, USA

Spartronics

SMT Process Engineer

Watertown, South Dakota, USA

Spartronics

RESUMES - POST your resume now

0 Electronics Manufacturing & PCB Assembly Resumes

POST your resume on SMTnet

FIND your next job now... FIND your next employee now...

█ PCB Design & Assembly Industry Associations

Surface Mount Technology Association (SMTA)

SMTA 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

Association Connecting Electronics Industries (IPC)

IPC 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

Editor - Dave "davef" Fish (submit your technical articles)

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