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SMTnet Express, May 25, 2023, Subscribers: 24,770, Companies: 11,789, Users: 28,001

█ Electronics Manufacturing Technical Articles

An Investigation Into The Durability Of Stencil Coating Technologies

It is well documented that Nano coatings on SMT stencils offer many benefits to those assembling PWBs. With reduced standard deviation and improved transfer efficiency nano coatings can provide, there is also a cost. As PWB assemblers work to justify the return on investment, one key question continues to arise. What is the durability or life of these coatings and what can be done in the print process to maximize the life of the coatings?

This paper addresses durability of the coatings in relation to the number of print cycles and underside wipe cycles applied as well as materials used on the underside wipe process. Different parameters will be applied and data will be collected. The results of this study will be summarized to help those using or considering the use of these nano coatings to improve their print process and suggestions will be given to maximize the life of the coatings.

Credits: FCT ASSEMBLY, INC.

Compatibility of Cleaning Agents With Nano-Coated Stencils

High density and miniaturized circuit assemblies challenge the solder paste printing process. The use of small components such as 0201, 01005 and uBGA devices require good paste release to prevent solder paste bridging and misalignment. When placing these miniaturized components, taller paste deposits are often required. To improve solder paste deposition, a nano-coating is applied to laser cut stencils to improve transfer efficiency. One concern is the compatibility of the nano-coating with cleaning agents used in understencil wipe and stencil cleaning. The purpose of this research is to test the chemical compatibility of common cleaning agents used in understencil wipe and stencil cleaning processes.Compatibility of Cleaning Agents With Nano-Coated Stencils

Credit: KYZEN Corporation

Hand Printing using Nanocoated and other High End Stencil Materials

There are times when a PCB prototype needs to be built quickly to test out a design. In such cases where it is known early on that there will be multiple iterations or that a "one and done" assembly will be made that there will be some SMT assemblers who choose to hand print solder paste onto the board using a "frameless" stencil. In such cases where hand printing is used, the consistency of the printing technique has typically been in question. Furthermore, the effectiveness of both the nanocoatings as well as the higher end stainless steel materials, which have been heretofore studied in controlled printing environments, will be evaluated for their impact on the hand printing process.

The purpose of the study was to determine the effectiveness of select nanocoating materials as well as certain high end stainless steel stencil materials as they relate to the manual SMT printing process. A variety of nanocoatings were applied to SMT metal stencils and solder paste volume measurements were taken to compare the effectiveness.

Credit: BEST Inc.

Effect of Nano-Coated Stencil on 01005 Printing

The demand for product miniaturization, especially in the handheld device area, continues to challenge the board assembly industry. The desire to incorporate more functionality while making the product smaller continues to push board design to its limit. It is not uncommon to find boards with castle-like components right next to miniature components. This type of board poses a special challenge to the board assemblers as it requires a wide range of paste volume to satisfy both small and large components. One way to address the printing challenge is to use creative stencil design to meet the solder paste requirement for both large and small components. ... The most important attribute of a stencil is its release characteristic. In other words, how well the paste releases from the aperture. The paste release, in turn, depends on the surface characteristics of the aperture wall and stencil foil. The recent introduction of new technology, nano-coating for both stencil and squeegee blades, has drawn the attention of many researchers. As the name implies, nano-coated stencils and blades are made by a conventional method such as laser-cut or electroformed then coated with nano-functional material to alter the surface characteristics. This study will evaluate nano-coated stencils for passive component printing, including 01005.

Credit: Speedline Technologies, Inc.

SEE Forum results for related keywords - nano -- 110

	LEARN MORE in the Technical Library...
In the past year, the number of technical papers that contributors added to the Technical Library was: 124	SUBMIT Your Technical Paper...

█ Printed Circuit Board Assembly & PCB Design Forum

Options for automatic reel change for a tape and reel system? -- I am designing a tape and reel system for a customer that want automatic reel change. Are there any products out there for automatically changing out the reels on a tape and reel machine?

REHM SMS2 capacitive flood sensor type -- hi, does anyone know what type is Carlo Gavazzi sensor on REHM SMS2 reflow oven? The only marking I see on one I have is "Tripleshield tm"

	SEARCH the PCB Assembly Forum
In the past year, the number of threads opened on the FORUM seeking help was: 286	VISIT the PCB Assembly Forum...

█ SMT, PCB Electronics Assembly Manufacturing Industry News

CIL Upgrades Facility with Ionic Contamination Testing & PCB Cleaning Systems from Gen3

Farnborough, Hampshire, UK — Gen3, Global leader in SIR, CAF, Solderability, Ionic Contamination & process optimisation equipment, is pleased to announce they were once again selected by Custom Interconnect Ltd (CIL) as a preferred supplier. CIL, a leading contract electronic manufacturing service provider have acquired a new CM33L+ Ionic Contamination Testing system to complement their purchase of a second MBTech NC25 PCB Cleaning System....

Gen3 Systems

CIL Upgrades Facility

KO-M Tech Co., Ltd. First Korean Company to Earn IPC J-STD-001 and IPC-A-610 Qualified Manufacturers Listing

IPC's Validation Services Program has awarded an IPC J-STD-001 and IPC-A-610 Qualified Manufacturers Listing (QML) to KO-M Tech Co., Ltd. a professional electronics manufacturing company located in the Republic of Korea....

Association Connecting Electronics Industries (IPC)

SHENMAO Debuts Visible No-Clean BGA Flux SMBF-08 for Enhanced SMT Assembly and BGA Ball Mount Process

SHENMAO America, Inc. is proud to announce the release of its new SMBF-08 Visible No-Clean BGA Flux. This innovative flux is specifically designed to meet the demands of surface mount technology (SMT) assembly and BGA ball mount processes, offering enhanced visibility and performance....

Shenmao Technology Inc.

SHENMAO - New No-Clean BGA Flux

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█ SMT / PCB Products & Services

NEW SMT / PCB EQUIPMENT & SERVICES - For Sale

Inspection

CameraLink High Resolution Industrial Cameras

ISVI - Industrial Sensor Vision International Corporation

PCB SOFTWARE

CELLS - MES & Tracking Software

Unisoft

PCB ASSEMBLY

PCB Fab & Assembly

Imagineering

PCB REFLOW OVEN

NEW! Mark 7 Series -
Reflow Oven

Heller

PCB DISPENSING

PCD Continuously Volumetric Dispense Pumps

GPD Global

Printing

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

I.C.T

SELECTIVE SOLDERING

Pillarhouse Jade Handex

Pillarhouse USA

VIEW More New Electronic Manufacturing Products...

█ SMT / PCB Assembly Equipment Auctions

AUCTION | Lewis & Clark | Jabil - Umkirch, Germany Auction

AUCTIONEER | Lewis & Clark

TYPE | Online Auction

FEATURING | Online Auction of Premium Quality CNC Machine Tools and Associated Equipment.... & MORE!!!

SCHEDULE | Wed, May 31 to Wed, Jun 14, 2023

Starts: May 31, 2023 11:00 AM CEST

Ends: Jun 14, 2023 11:00 AM CEST

INSPECTION | Viewing dates by appointment only

Jun 06, 2023 09:00 AM to 04:00 PM CEST & Jun 07, 2023 09:00 AM to 04:00 PM CEST

LOCATION | Im Kirchenhurstle, 4—6, 79224 Umkirch, Germany

CURRENCY | EUR

█ Electronic Equipment Mart

MART - Used Electronic Assembly Machines For Sale

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 Agilis Magazines

Baja Bid

P&P / FEEDERS

Panasonic NPM-W2

SMTUnion - Panasonic NPM-W2 Chipshooter

SMTUnion

Gen'l Purpose T&M

Zeiss LSM-880 Laser Scanning Microscope

World Equipment Source, LLC

	VIEW More Used Equipment For Sale...
In the past year, the number of your RFQs that SMTnet sent to equipment suppliers was: 105	SEND a RFQ to Equipment Suppliers ....

MART - Used PCB Assembly Equipment Wanted To Buy

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

P&P /FEEDERS

Mydata SMT P&P

Baja Bid - Mydata SMT Placement Machine

Baja Bid

SEE Buyers' Used Assembly Equipment Wants

█ Electronics Manufacturing & Assembly Events Calendar

EVENTS

Aguascalientes Expo and Tech Forum | June 1 to 1

SMTA

Long Island Chapter Meeting: Fine Feature Paste Printing, Stencil Design and Solder Technology | May 31 to 31

SMTA

Ontario Webinar: Microvia Reliability - Understanding the Effects of Process, Design & Materials | May 30 to 30

SMTA

ADD Your Electronics Manufacturing and Assembly Event Now ...

█ Electronics Manufacturing Training Courses & PCB Assembly Training

FIND TRAINING FOR:

IPC Certification

Soldering & Rework

PCB Design

Electronics Assembly

Electronics Inspection

Online Training