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SMTnet Express, December 21, 2023, Subscribers: 25,252, Companies: 11,970, Users: 28,576

█ Electronics Manufacturing Technical Articles

BENEFITS OF INERT GAS SOLDERING FOR PRINTED CIRCUIT BOARD ASSEMBLY PROCESSES

This review of inert atmosphere for the electronics assembly processes will look at the benefits and attempt to close the gap on some of the misconceptions of using inert gases for electronics assembly. We will look at the reasons for using nitrogen and the cost benefits that come with the use of this inert atmosphere gas. As part of this review we will be explain the needs assessment and when you should use an inert atmosphere for your assembly process. Case studies will be provided to demonstrate the benefits of an inert atmosphere in the electronics assembly process area.

Credit: Air Products

Selective soldering in an optimized nitrogen atmosphere

In PCB circuit assemblies the trend is moving to more SMD components with finer pitch connections. The majority of the assemblies still have a small amount of through hole (THT) components. Some of them can't withstand high reflow temperatures, while others are there because of their mechanical robustness. In automotive applications these THT components are also present. Many products for cars, including steering units, radio and navigation, and air compressors also use THT technology to connect board-to-board, PCB's to metal shields or housings out of plastic or even aluminium. This is not a simple 2D plain soldering technology, as it requires handling, efficient thermal heating and handling of heavy (up to 10 kg) parts. Soldering technology becomes more 3D where connections have to be made on different levels. For this technology robots using solder wire fail because of the spattering of the flux in the wires and the long cycle time. In wave soldering using pallets the wave height is limited and pin in paste reflow is only a 2D application with space limitations.

Credit: Vitronics Soltec

Selective Soldering: A need for Innovation and Development

Selective soldering utilises a nozzle to apply solder to components on the underside of printed circuit boards (PCBs). This nozzle can be moved to either perform dips (depositing solder to a single component) or draws (applying solder to several components in a single movement). The selective soldering methodology thereby allows the process to be tailored to specific joints and allows multiple nozzle types to be used if required on the circuit board. Nozzles can vary by size (internal diameter) and shape (making them suitable for different process types). This is all dictated by board design and process requirements. Selection of the nozzle type is dependent upon the product to be soldered and the desired cycle time. Examples of different nozzle types are shown here. Hand-load selective systems must be programmed with the parameters for multiple solder joints. However, many in-line systems are designed to be modular. This modularity allows for multiple solder stations with different conditions/nozzles to achieve low cycle times. Figure 1 shows the two distinct types of selective soldering systems offered by Pillarhouse International Ltd.

Credit: Pillarhouse International Ltd.

Effects of an Appropriate PCB Layout and Soldering Nozzle Design on Quality and Cost Structure in Selective Soldering Processes

The globalization of markets results in stronger competition with clearly noticeably cost pressure. For companies producing electronic equipment it is therefore of existential importance to reduce production costs whilst maintaining a consistently high quality level of the manufactured products. Manual repair soldering that is expensive, time-consuming and cost intensive is already unacceptable due to the required quality and the reproducibility of the whole manufacturing process.

Credit: SEHO Systems GmbH

Solutions for Selective Soldering of High Thermal Mass and Fine-Pitch Components

The selective soldering process has evolved to become a standard production process within the electronics assembly industry, and now accommodates a wide variety of through-hole component formats in numerous applications. Most through-hole components can be easily soldered with the selective soldering process without difficulty, however ...

Credits: Nordson SELECT

RESULTS of Searches for related keywords - "nitrogen" (746)

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█ Printed Circuit Board Assembly & PCB Design Forum

Wave solder Nitrogen - how much is really needed to make an improvement -- We all know that purity of nitrogen is critical for selective soldering. When it comes to wave solder- how much or what percentage reduction in oxygen is enough to make a difference in 1) at least reducing dross buildup and 2) being anble to cut back on flux?

Force sensor error on MyData My12 -- How can I bypass the " Hydra force sensor can't calibrate" during the "Hardware Initialization" test. This is stopping me from starting the machine.

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█ SMT, PCB Electronics Assembly Manufacturing Industry News

Aegis Software & Arch Systems Partner to Digitize Continuous Improvement in Manufacturing The full breadth of contextualized operations data now powers a manufacturing AI Copilot that can both suggest and implement corrective action on the shop floor.... Aegis Industrial Software Corporation
Wafer-Level Packaging Symposium Program Announced The SMTA is excited to announce the technical program for the Wafer-Level Packaging Symposium. The symposium will be held February 13-15, 2024 at The Hyatt Regency San Francisco Airport in San Francisco, California.... Surface Mount Technology Association (SMTA)
SHENMAO Debuts High Thermal Impact Reliability No-Clean Solder Paste PF918-P250, Elevating Automotive Electronics Performance SHENMAO Technology proudly unveils its latest innovation, the PF918-P250 no-clean solder paste, specifically designed to meet the stringent demands of automotive applications. With a focus on enhancing thermal impact reliability, PF918-P250 sets a new standard for performance, delivering superior results for automotive devices and high-power components.... Shenmao Technology Inc.

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█ SMT / PCB Products & Services

NEW SMT / PCB EQUIPMENT & SERVICES - For Sale

Selective Soldering

Selective Wave Soldering Machine I.C.T-SS550

Dongguan I.C.T Technology

SELECTIVE SOLDERING

Pillarhouse Jade Handex

Pillarhouse USA

Inspection

CameraLink High Resolution Industrial Cameras

ISVI - Industrial Sensor Vision International Corporation

PCB SOFTWARE

ProntoPLACE SMT & Thru-hole Software

Unisoft

PCB ASSEMBLY

PCB Fab & Assembly

Imagineering

PCB REFLOW OVEN

1910 MK5 Dual Lane, Dual Temperature Reflow Oven

Heller

PCB DISPENSING

MAX II (Heated) High Precision Dispensers

GPD Global

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█ SMT / PCB Assembly Equipment Auctions

Currently, no featured auctions are on SMTnet

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█ Electronic Equipment Market

MARKET - Used Electronic Assembly Machines For Sale

AOI INSPECTION

Viscom S3088 Ultra Chrome 3D AOI

Lewis & Clark Viscom S3088 AOI

Lewis & Clark

Soldering - Selective

Juki Cube 460

Baja Bid

PCB PRINTING

DEK NEOHORIZON 03iX

SMTUnion - DEK NEOHORIZON 03iX

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.

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MARKET - 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 Magazines

Baja Bid

P&P / FEEDERS

Assembleon MG-1R

World Equipment Source Assembleon MG-1R

World Equipment Source, LLC

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█ Electronics Manufacturing & Assembly Events Calendar

EVENTS

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 - 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

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)

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█ 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

POSITION: SMT Technician/ Engineer/ Management

JOB CATEGORY: Engineering Maintenance Management Production Technical Support

CURRENT LOCATION: Raymond, WA, USA

WILLING TO RELOCATE?: Not willing to relocate.

SUMMARY OF QUALIFICATIONS: Expert knowledge of circuit board manufacturing for the through-hole and Surface Mount Technology industry, international and national field work to manufacturers. Provided high value technical assistance and formal training to industry standards. Specialized in staff and department development.

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█ 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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