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SMTnet Express, December 7, 2023, Subscribers: 25,227, Companies: 11,961, Users: 28,546

█ Electronics Manufacturing Technical Articles

Effect of Multiple Reflow Cycles on Intermetallic Compound Creation

This paper deals with the effect of the solder profile and multiple reflow cycles on intermetallic compound (IMC) creation. Soldered joints between PCB and 1206 size chip resistors were made from SAC 305 or SnBi solder alloy. Samples were reflowed one to six times with one of the two different soldering profiles for each soldering alloys. The thickness and composition of IMC layers were measured and observed with a scanning electron microscope. The growing of IMC layers thickness was observed. The results are presented depending on greater value of heating factor and number of reflow cycles. The shear forces for the components were measured and the fracture interfaces were inspected.

Credit: University of West Bohemia

Effects of Reflow Profile and Thermal Conditioning on Intermetallic Compound Thickness for SnAgCu Soldered Joints

The purpose of this paper is to investigate the effects of reflow time, reflow peak temperature, thermal shock and thermal aging on the intermetallic compound (IMC) thickness for Sn3.0Ag0.5Cu (SAC305) soldered joints.

Credit: Flex (Flextronics International)

Effect of Reflow Profile on Intermetallic Compound Formation

Reflow soldering in a nitrogen atmosphere is a common process consideration in surface mount technology assembly. This is because the use of nitrogen in reflow equipment may benefit the process as well as the quality of the end product, where it can increase the reliability of the solder joint. (...) The present study investigated thoroughly the effect of different reflow soldering atmosphere, which is air and nitrogen on IMC formation and growth

Credit: Universiti Teknologi Malaysia

Effect of Cooling Rate on the Intermetallic Layer in Solder Joints

While it has long been known that the Cu6Sn5 intermetallic that plays a critical role in the reliability of solder joints made with tin-containing alloys on copper substrates exists in two different crystal forms over the temperature range to which electronics circuitry is exposed during assembly and service, it has only recently been recognized that the change from one form to the other has implications for solder joint reliability. (..) In this paper the authors report a study of the effect of cooling rates on Cu6Sn5 crystals. Cooling rates from 200°C ranged from 10°C/minute to 100°C/minute and the effect of isothermal ageing at intermediate temperatures was also studied. The extent of the phase transformation after each regime was determined using synchrotron X-ray diffraction. The findings have important implications for the manufacture of solder joints and their in-service performance... First published in the 2012 IPC APEX EXPO technical conference proceedings....

Credit: Nihon Superior Co., Ltd.

RESULTS of Searches for related keywords - "intermetallic" (409)

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█ Printed Circuit Board Assembly & PCB Design Forum

Foam in inline wash -- Good Morning, I'm a relatively new engineer, and i've been experiencing a lot of anomalies when it comes to our inline wash. We have an Austin American Hydrojet, and no matter how many times i clean the tank, it still foams like crazy! its been happening a little over a week now. It all began when the facilities exhaust went out, that was fixed, our DI water is clean, just changed the carbon and resin beds, maybe its flux or solder? any help would be greatly appreciated. I'm currently draining, scrubbing, and filling the tanks 3x a day and this is a DI only wash, no saponifier, no defoaming agent.

Inspection of pads in PCB -- Hello, I am experiencing issues with one of my PCB suppliers. Specifically, I am having trouble with solder shorts occurring on a SOIC8 component, and always in the same pads. Upon inspection with a microscope, I discovered that three of the pads are 3 mils shorter than the other ones and the stencil is leaving solder on the solder mask instead of the pads. To prevent this problem from happening in the future, I am interested in finding an optical inspection machine that can measure all the pads accurately. If you can help me with this, I would greatly appreciate it. Thank you. Thanks

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█ SMT, PCB Electronics Assembly Manufacturing Industry News

Europlacer Full-Line Install Delivers Increased Productivity for Cursey Technology. Fresh investment with a new full production line from Europlacer for UK-based Cursey Technology helps drive growth for this contract manufacturer.... 3M Electrical Solutions Division
Mycronic receives order for an SLX mask writer Mycronic AB (publ) has received an order for an SLX mask writer from an existing customer in Asia. The order value is in the range of USD 5-7 million. Delivery of the system is planned for the second quarter of 2024.... Mycronic AB
WHMA's Annual Global Leadership Summit Offers Technical Education Workshop on Strategic Practices for Success Participants will learn how to benefit from lucrative federal programs... Association Connecting Electronics Industries (IPC)

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█ SMT / PCB Products & Services

NEW SMT / PCB EQUIPMENT & SERVICES - For Sale

PCB INSPECTION

MV-7 FIVE CAMERA In-Line AOI System

Mirtec

PCB SOFTWARE

ProntoGERBER CONNECTION

Unisoft

PCB ASSEMBLY

PCB Fab & Assembly

Imagineering

REFLOW OVEN

Voidless / Vacuum Reflow Soldering Oven

Heller

Dispensing

Catalina Benchtop Dispense Robots

GPD Global

Reflow

PCB Reflow Oven Machine I.C.T Lyra Series

Dongguan I.C.T

SELECTIVE SOLDERING

Pillarhouse Jade Handex

Pillarhouse USA

VIEW MORE NEW PRODUCTS...

█ SMT / PCB Assembly Equipment Auctions

AUCTION | End of 2023 Online Equipment Auction

AUCTIONEER | Baja Bid

TYPE | Online Auction

FEATURING | Mycronic / Mydata P&P, Dek Horizon, Koh Young AOI, Mirtec AOI, Summit 750 Rework, PVA / SCS 4393, LPKF ProtoMat S63

SCHEDULE | Mon, Dec 4 to Thu, Dec 7, 2023

Auction Opening: December 4 [08:00AM EST]

Begins Closing: December 7 [01:00PM EST]

LOCATION | Longwood, FL USA

FETURING | Mycronic / Mydata MY100DX-14 SMT Pick & Place, Mycronic / Mydata Magazines & Feeders, Juki JX-100 LED SMT Pick & Place, Mycronic / Mydata MY500 Jet Printer, Dek Horizon 01 Screen Printer, Ekra X4 Screen Printer, 2017 ASM E by DEK Screen Printer, Speedline Momentum Screen Printer, Koh Young 8030-3 Inline 3D SPI, Koh Young KY3020T Table Top SPI, Yestech BX Table Top AOI, 2015 Mirtec MV-3L Table Top AOI, Mirtec V-7xi Inline AOI, BTU Pyramax 98A Reflow Oven, Nordson Dage XD6600 X-Ray, Yestech YTX-X1 X-Ray, Speedline Camalot FX-D Dispenser, PVA Delta 6 Glue/Epoxy Dispenser, Air-Vac DRS25 Rework System, VJ Electronix Summit 750 Rework Station, SonoTek EVS 1000 Solder Recovery System, Flexlink F5000H-K Laser Marker, PVA / SCS 4393 Conformal Coater, LPKF ProtoMat S63 Rapid Prototyping Machine, Simplimatic Magazine Loader / Unloader, Simplimatic FIFO Buffer, Simplimatic 2050 Conveyor, Lynx .5 Meter Conveyor, ... AND MORE!!!

SEE MORE AUCTIONS...

█ Electronic Equipment Market

MARKET - Used Electronic Assembly Machines For Sale

PCB PRINTING

DEK NEOHORIZON 03iX

SMTUnion - DEK NEOHORIZON 03iX

SMTUnion

P&P / FEEDERS

Chroma Table Top Single Site Test Handler Model 3111

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

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

Soldering - Selective

Juki Cube 460

Baja Bid

MORE EQUIPMENT & PARTS...

SUBMIT YOUR RFQ ....

MARKET - Used PCB Assembly Equipment Wanted To Buy

Soldering - Reflow

10 Zone Reflow Oven

Baja Bid

P&P / FEEDERS

Assembleon MG-1R

World Equipment Source Assembleon MG-1R

World Equipment Source, LLC

PCB TEST

Agilent 3070

Lewis & Clark Agilent 3070

Lewis & Clark

PCB TEST

Agilent 3070

KD Electronics Agilent 3070

KD Electronics

SEE Buyers' Used Assembly Equipment Wants

█ Electronics Manufacturing & Assembly Events Calendar

EVENTS

Silicon Valley Expo & Tech Forum | December 7

SMTA

Pan Pacific Strategic Electronics Symposium | January 29 to February 1, 2024

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

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

Advanced Surface Mount Micro Hand Soldering

Illinois, Schaumburg

Dec. 14 to Dec. 15, 2023

EPTAC Corporation

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

IPC Certified Electronics Program Manager (CEPM) Training and Certification Program

Association Connecting Electronics Industries (IPC)

Component Placement 101 Training Course

Surface Mount Technology Association (SMTA)

ESD Control for Electronics Assembly

Association Connecting Electronics Industries (IPC)

MORE TRAINING COURSES...

█ Electronics Manufacturing & PCB Assembly Career Center

Job Needs & Wants

JOBS

YOUR job openings

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. )

AOI Engineer

Hai Phong, Vietnam

Dongguan RuiHengHuaTai Electronic Co., Ltd

SMT Process Technician III

Racine, Wisconsin, USA

Cree Lighting

Experienced SAKI AOI programmer

All US, USA

AirDataIOT,LLC

Engineering Project Manager

Strongsville, Ohio, USA

Spartronics

Senior Quality Engineer

Williamsport, Pennsylvania, USA

Spartronics

Senior Systems Engineer

Strongsville, Ohio, USA

Spartronics

Procurement Specialist

Brooksville, Florida, USA

Spartronics

Buyer/Planner

Williamsport, Pennsylvania, USA

Spartronics

Corporate Director of Quality

Williamsport, Pennsylvania, USA

Spartronics

Automotive service Technician

Golden, CO, USA

Engage2excel

Program Manager

Williamsport, Pennsylvania, USA

Spartronics

RESUMES

YOUR resume

0 Electronics Manufacturing & PCB Assembly Resumes

YOUR next job ... YOUR next employee ...

█ 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.

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