Express Newsletter

The SMTnet Express newsletter is sent weekly to over 25,000 subscribers.

SMTnet
»
Express Newsletter

SMTnet - where SEARCH engines send people to find things

SMTnet Express, August 24, 2023, Subscribers: 25,024, Companies: 11,879, Users: 28,286

█ Electronics Manufacturing Technical Articles

How to Manage Material Outgassing in Reflow Oven

In a lead-free reflow process, temperatures are higher, and materials use outgasses more than in a leaded reflow process. The trends toward higher density populated boards and more pin-in-paste technology also increase solder paste use. More components and more solder paste result in more outgassing of chemistry during the reflow process. Some assemblies report condensation of vapors when the cold printed circuit board enters the oven. Little is known about the interaction between these condensed materials in terms of the interaction between these condensed materials and the reliability of the assembly. Apart from the question of reliability, a printed circuit board contaminated with a small film of residues after reflow soldering is not desirable.

Credit: Vitronics Soltec

Reactivity Of No-Clean Flux Residues Trapped Under Bottom Terminated Components

As electronic devices increase functionality in smaller form factors, there will be limitations, obstacles and challenges to overcome. Advances in component technology can create issues that may have time delayed effects. One such effect is device failure due to soldering residues trapped under bottom terminated components. If the residues trapped under the component termination are active and can be mobilized with moisture, there is the potential for ion mobilization causing current leakage.

Credit: Kester

SMT Process Recommendations Defect Minimization Methods for a No-Clean SMT Process

Key competitive advantages can be obtained through the minimization of process defects and disruptions. In today's electronic manufacturing processes there are many variables to optimize. By gaining an understanding of what the defects are, and where they come from, is a key step in the process towards defect free/six sigma manufacturing. In the last decade, Surface Mount Technology processes have been slowly converting towards the No-Clean philosophy. This new trend has spawned new processing issues which need to be addressed. This paper will investigate solutions to current problems in the processing of No-Clean SMT processes.

Credit: Kester

Controlling Voiding Mechanisms in the Reflow Soldering Process

While a significant level of voiding can be tolerated in solder joints where electrical conductivity is the main requirement, voiding at any level severely compromises thermal conductivity. For example, in LED lighting modules effective conduction of heat through the 1st level die attach to the substrate and then through the 2nd level attach to the heat sink is critical to performance so that voiding in the solder joints at both levels must be minimized. (...) In this paper, the authors will review the factors that influence the incidence of voids in small and large area solder joints that simulate, respectively, the 1st and 2nd level joints in LED modules and discuss mitigation strategies appropriate to each level. They will also report the results of a study on the effect on the incidence of voids of flux medium formulation and the optimization of the thermal profile to ensure that most of the volatiles are released early in the reflow process.

Credit: Nihon Superior Co., Ltd.

Voiding Control for QFN Assembly

Quad Flat No Leads (QFN) package designs receive more and more attention in electronic industry nowadays. This package offers a number of benefits including (1) small size, such as a near die-sized footprint, thin profile, and light weight; (2) easy PCB ...

Credit: Indium Corporation

Effect of Silicone Contamination on Assembly Processes

Silicone contamination is known to have a negative impact on assembly processes such as soldering, adhesive bonding, coating, and wire bonding. In particular, silicone is known to cause de-wetting of materials from surfaces and can result in adhesive failures. There are many sources for silicone contamination with common sources being mold releases or lubricants on manufacturing tools, offgassing during cure of silicone paste adhesives, and residue from pressure sensitive tape. This effort addresses silicone contamination by quantifying adhesive effects under known silicone contaminations. The first step in this effort identified an FT-IR spec troscopic detection limit for surface silicone utilizing the area under the 1263 cm-1 (Si-CH3) absorbance peak as a function of concentration (ug/cm2). The next step was to pre-contaminate surfaces with known concentrations of silicone oil and assess the effects on surface wetting and adhesion. This information will be used to establish guidelines for silicone contamination in different manufacturing areas within Harris Corporation...

Credit: Harris Corporation

SEE Forum results for related keywords - "outgassing" (165)

	LEARN MORE in the Technical Library...
In the past year, the number of technical papers that contributors added to the Technical Library was: 170	MAKE Your Paper More Visible...

█ Printed Circuit Board Assembly & PCB Design Forum

Blakell LS920 spares -- Hi all, Does anyone know of a company (preferably UK) that can source spares for an old Blakell LS920 cut and clinch machine?

Dirty Solder Joints -- Hi, I'm after some advice, we have a selective soldering machine and are getting dirty solder joints, we cant figure out why! this happens even after cleaning dross from pot, we have verified flux and nitrogen. any suggestions would be appreciated. Photos attached

	SEARCH the PCB Assembly Forum
In the past year, the number of threads opened on the FORUM seeking your help was: 284	CONTRIBUTE to the Assembly Forum...

█ SMT, PCB Electronics Assembly Manufacturing Industry News

SMT Placement Machine Nozzle Maintenance and Operation Instructions from KINGSUN "DONGGUAN KINGSUN AUTOMATION TECHNOLOGY CO.,LTD" is a leading SMT automation equipment factory provider in China. With many years of profound experience accumulation, we provides comprehensive solutions for global customers with strong resources and high-quality professional technical team.... DONGGUAN KINGSUN AUTOMATION TECHNOLOGY CO.,LTD
Koh Young Technology Promotes Brent Fischthal to Head of Global Marketing Koh Young Technology is pleased to announce the promotion of Brent Fischthal as the Head of Global Integrated Marketing. In this newly created position, he is entrusted with spearheading the company's global marketing efforts, overseeing critical areas in marketing strategy, brand management, and digitalization. Leveraging his background in marketing, sales, and business development, Brent will play a fundamental role in managing the global marketing efforts and executing strategies aligned with company goals.... Koh Young America, Inc.
Latest Advancements in Safety and Reliability Requirements in Medical, Auto and Aerospace Applications Take Center Stage at IPC's High Reliability Forum The critical reliability of electronic prosthetics in the brain to help restore movement to a paralyzed hand, enhancing the durability of EV automotive infrastructure, testing criteria and challenges of working with lead-free materials, and evaluation of reliability and maintainability for safe airborne structures are just a few of the agenda items offered at IPC's High Reliability Forum October 17-19 in Linthicum (Baltimore), Md.... Association Connecting Electronics Industries (IPC)

SEE more Electronics Assembly Manufacturing News...

█ SMT / PCB Products & Services

NEW SMT / PCB EQUIPMENT & SERVICES - For Sale

PCB SOFTWARE

ProntoSELECTIVE-SOLDERING

Unisoft

PCB ASSEMBLY

PCB Fab & Assembly

Imagineering

PCB REFLOW OVEN

NEW! Mark 7 Series -
Reflow Oven

Heller

PCB DISPENSING

MAX II High Precision Dispensers

GPD Global

Printing

Full-auto SMT Stencil Printer I.C.T-P4034

I.C.T

SELECTIVE SLDRNG

Pillarhouse Jade Handex

Pillarhouse USA

PCB INSPECTION

MV-9 Series 2D/3D In-Line AOI Systems

Mirtec

VIEW More New Electronic Manufacturing Products...

█ SMT / PCB Assembly Equipment Auctions

AUCTION | Baja Bid Exchange Auction

AUCTIONEER | Baja Bid

TYPE | Online Auction

SCHEDULE | Mon, Aug 21 to Wed, Aug 24, 2023

FEATURED EQUIPMENT | 2015 Juki Cube 460 Selective Solder, 2013 Aqueous Tech Trident XLT Batch Cleaner, 2013 Mydata MY100LXe—10 Pick & Place, 2008 Assembleon MG2 Pick & Place, 2005 Assembleon Opal Xii Pick & Place, Assorted Mycronic Feeders & Magazines, MPM SPM Screen Printer, FocalSpot NXR—1525 X—Ray, Yamato DKN602C Oven, Conceptronic HVA 102 Oven, [2] Thermotron Environmental Chambers

AUCTION | Tempo Automation Timed Online

AUCTIONEER | The Branford Group

TYPE | Online Auction

FEATURING | Complete Closure of Bay Area SMT Facility Low-Volume Equipment As-Late-As 2020! 2019 Europlacer: iineo, iineo+ and XPii Placement Systems In-Circuit Test | Routing | Conformal Coating | Selective Solder

SCHEDULE | Wed, Sep 6 to Tue, Sep 12, 2023

OPENS | Monday, September 6, 2023 10:00 AM (PST)

CLOSES | Thursday, September 12, 2023 10:00 AM (PST)

EQUIPMENT LOCATION | San Francisco, CA

EQUIPMENT INSPECTION | By Appointment Only. Contact: Todd Moutafian<tmoutafian@thebranfordgroup.com>

FEATURED EQUIPMENT |

SMT Line #1: Ekra Serio 4000 Compact Screen Printer (2018), Vi Technologies Pi Primo Solder Paste Inspection (2018), Europlacer inneo+ Placement System (2019), Europlacer inneo Placement System (2019) w/ Tray Loader, BTU Pyramax 125N Reflow Oven (2019), Mirtec MV-7U omni AOI System (2019), Promation Conveyor & Board Handling Equipment (2019)

SMT Line #2: Ekra Serio 4000 Compact Screen Printer (2017), Vi Technologies Pi Primo Solder Paste Inspection (2018), Europlacer inneo Placement System (2017), Europlacer inneo Placement System (2019), BTU Pyramax 125N Reflow Oven (2017), Mirtec MV-6 omni AOI System (2017), Promation Conveyor & Board Handling Equipment (2020)

SMT Line #3: Ekra Serio 4000 Compact Screen Printer (2018), Vi Technologies Pi Primo Solder Paste Inspection (2019), (3) Europlacer XPII Placement Systems (2019), Europlacer inneo+ Placement System (2019) w/ Tray Loader, BTU Pyramax 125N Reflow Oven (2019), Mirtec MV-6 omni AOI System (2017), Promation & Flexlink Conveyor & Board Handling Equipment (2020)

SMT Line #4: Mycronic MY700IX Jet30 Screen Printer (2019), 8 total hours!, Manncorp MC110 Manual Screen Printer, Europlacer iineo + Placement System (2017) w/ Tray Loader, BTU Pyramax 125N Reflow Oven (2019), Mirtec MV-6 omni AOI System (2016), Promation Conveyor & Board Handling Equipment (2020)

Europlacer Elements: (1,000+) Europlacer Elements - Various Sizes (8mm+), (60+) Europlacer Intelligent Trolleys (2018 & 2019)

Testing: Keysight 3070 Series 3 ICT System; 4-Module Chassis; Fully Populated (2019), Spea 4060s2 Flying Probe Tester (2019), Nordson/Dage Quadra 3 X-Ray System (2019), Nikon/X-Tek XTV160 X-Ray System (2017), Vccount VRHCount X-Ray Component Counter (2021), Mirtec MV-7U omni AOI System (2020), ASC LineMaster Fusion 3D Solder Paste Measurement System (2019)

Soldering: (2) Nordson Cerno 103IL Lead Free Selective Solder Systems (2017 & 2018)

Routing: Asys Divisio 2100 Board Router (2018)

Wash: Aqua Kleen Typhoon T-20 Inline Wash (2018), Aqueous Technologies Zero-Ion G3-24 Contamination Tester (2017), Aqueous Technologies Trident ZDO Batch Wash (2017)

Conformal Coating | Ovens | Rework: PVA Delta 8 Conformal Coating System (2019), Ersa HR550XL BGA Rework System (2020), Air-Vac PCBRM15 Rework System (2020), BTU Pyramax 75A

Reflow Oven (2019), Mult. Yamato Ovens

SMT Support: Complete Inovaxe SMT Reel Storage System

Facility Support: OnSite Systems N-350 Nitrogen Generator, OnSite Systems N-75 Nitrogen Generator, (2) Ingersoll Rand RS30ie Air Compressors

VISIT the Assembly Equipment Auctions Calendar...

█ Electronic Equipment Mart

MART - Used Electronic Assembly Machines For Sale

P&P / FEEDERS

Panasonic NPM-W2

SMTUnion - Panasonic NPM-W2 Chipshooter

SMTUnion

PCB AOI

YesTech YTV-2000 Series YTV-2050 AOI S

World Equipment Source - YesTech YTV-2050 AOI

World Equipment Source, LLC

Adhesive Dispensers

Musashi FAD2500

KD Electronics Ltd.

AOI INSPECTION

Viscom S3088 Ultra Chrome 3D AOI

Lewis & Clark Viscom S3088 AOI

Lewis & Clark

Board Cleaners

Aqueous Technologies Trident XLD

Baja Bid

	VIEW More Used Equipment For Sale...
108 RFQs were forwarded to equipment suppliers in the past 365 days	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

Pick and Place/Feeders

Mydata Agilis Feeders

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

High-Reliability Cleaning and Conformal Coating Conference | August 29 to 31

SMTA

Chihuahua Expo & Tech Forum | September 7

SMTA

SMTA Workforce Dev. Webinar: Effectiveness of Strain Gage Methodology for Durable Board Design | September 12

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

IDEA-STD-1010 Essentials Online Live Training Course

Multiple dates and locations. Check the link for details

EPTAC Corporation

Idea Counterfeit Component Workshop Online Live Training

Multiple dates and locations. Check the link for details

EPTAC Corporation

Component Identification Online Live Certification

Multiple dates and locations. Check the link for details

EPTAC Corporation

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

Reflow Soldering 101 Training Course

Surface Mount Technology Association (SMTA)

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

EPTAC Corporation

Live Online Training - IPC/WHMA-A-620 Trainer (CIT) Challenge Test

ACI Technologies, Inc.

Live Online Training - IPC-A-610 Expert (CSE) Certification Training Course

ACI Technologies, Inc.

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

ACI Technologies, Inc.

VISIT All Electronics Manufacturing Training Courses...

█ Electronics Manufacturing & PCB Assembly Jobs

CAREER CENTER - Job Needs & Wants

JOBS - POST your job openings now

Overseas SMT Engineer

All over the world, Alabama, USA

I.C.T ( Dongguan Intercontinental Technology Co., Ltd. )

SMT Engineer, Marketing Representative, Sales Representative, Business Assistant

All over the world, California, USA

I.C.T ( Dongguan Intercontinental Technology Co., Ltd. )

Manufacturing Analyst/Cost Accountant

Williamsport, Pennsylvania, USA

Spartronics

Program Manager

Williamsport, Pennsylvania, USA

Spartronics

Senior Quality Engineer

Williamsport, Pennsylvania, USA

Spartronics

Product Engineer

Williamsport, Pennsylvania, USA

Spartronics

Corporate Director of Quality

Williamsport, Pennsylvania, USA

Spartronics

Purchasing Specialist

Brooksville, Florida, USA

Spartronics

Business Development Manager- High Level Assembly- Remote

Plaistow, New Hampshire, USA

Spartronics

Process Engineer

Williamsport, Pennsylvania, USA

Spartronics

RESUMES - POST your resume now

0 Electronics Manufacturing & PCB Assembly Resumes

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.

FEATURED PARTNERS