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SMTnet Express, July 19, 2018, Subscribers: 31,194, Companies: 10,991, Users: 24,953

Technical Library

Improve SMT Assembly Yields Using Root Cause Analysis in Stencil Design

Greg Smith; FCT ASSEMBLY, INC.

Reduction of first pass defects in the SMT assembly process minimizes cost, assembly time and improves reliability. These three areas, cost, delivery and reliability determine manufacturing yields and are key in maintaining a successful and profitable assembly process. It is commonly accepted that the solder paste printing process causes the highest percentage of yield challenges in the SMT assembly process. As form factor continues to get smaller, the challenge to obtain 100% yield becomes more difficult.

This paper will identify defects affecting SMT yields in the printing process and discuss their Root Cause. Outer layer copper weight and surface treatment will also be addressed as to their effect on printability.

Forum search results for related keywords: SMT yields, poor solder paste release, tombstoning, bridging, voiding,

SMT / PCB Products

PCB ASSEMBLY

Reflow

Heller

Solder Paste Stencils

BEST, Inc.

Hand Assembly

Virtual Industries

Dispensing

GPD Global

Pick & Place

Count On Tools

Prototyping

SlingShot Assembly

Reflow

BTU International

PCB INSPECTION

Inspection

Mirtec

Inspection

YXLON

Inspection

Vi Technology

PCB REWORK

PCB SOFTWARE

Rework

PDR America

Rework

Kurtz Ersa

Software

Unisoft

Software

KIC

SMT / PCB Equipment Auctions

Online SMT Auction
Featuring Items From FryMaster

Date: TBD | Baja Bid

Electronic Equipment Mart

Cencorp TR2100

Depanelizers / Routers

ECM Equipment Sales, Inc.

Electrovert Omniflow 5

Reflow Ovens

LEL Semi

Viscom S6055-II

AOI / Automated Optical Inspection

KD Electronics Ltd.

PCB Conveyors

Conveyors

JMW Enterprises

DEK Horizon 03iX

Screen Printing Equipment

IBE SMT Equipment

Universal Inst. Genesis GC-60D

Pick and Place Equipment/Feeders

Capital Equipment Exchange

Events Calendar

IPC E-Textiles 2018 Conference | September 13 | IPC

SMTA International 2018 Conference & Exhibition | October 14 - 18 | SMTA

PCB Cleaning Webinar Series | ZESTRON Corporation

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

Career Center

SMT Field Service / Technical Support

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Duluth, GA | Seika Machinery

Technical Engineer

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Albany, NY | YINCAE Advanced Materials

Commission Sales

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Everywhere | SMTnet

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 | Upcoming Events

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 | Online Store | Upcoming Events

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard

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

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Used PCB Assembly Equipment - CE Exchange

Experience the Blackfox Difference - Premier IPC Training & Certification Center

3 YEAR WARRANTY – Industry first, market leading warranty on all award winning TruView X-Ray inspection products from Creative Electron

Europlacer iineo+ SMT pick and place with integrated component tester

Kyzen Free PCB Cleaning Audit

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

Late Model SMT equipment ONLINE AUCTIONS

Metcal CV-5200 Connection Validation Soldering System

Quality Pre-Owned SMT Eequipment - Robo-Tek

ONLINE AUCTION - SMT Equipment

Discover the Next Generation of Electronics Inspection - Join the YXLON EVOlution

Turn-Key PCB Prototypes - On Your Bench in 5 Days

Soldertools.net - Rework Tools

NEW Fully featured benchtop dispenser - GPD Global

HELLER - Choose an Oven for Your Reflow Needs

KIC - Making Reflow Ovens Smarter

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