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SMTnet Express, May 18, 2023, Subscribers: 24,749, Companies: 11,781, Users: 27,978

█ Electronics Manufacturing Technical Articles

Back in the "good old days," stencil cleaning was effortless and effective. CFC-based solvents were sprayed or wiped onto a stencil with apertures hundreds of times larger than modern-day components. The stencil cleaning process was not considered a value-added procedure; instead it was the cleaning of a production tool. How times have changed. The late-1980s ushered in the end of most of the popular solvents, and the machines that consumed them. Assemblers turned to alternative cleaning agents, including IPAs and other solvents.

Credit: Aqueous Technologies Corporation

Stencil Cleaning - A Practical Approach To Improving Yields And Maximizing Your Throughput

Main Points * Technologies for the job * More than a flat piece of Stainless * Compatibility * Solubility in stencil cleaning * Influencing factors * Best Practices to reduce misprints and increase yields

Credit: KYZEN Corporation

SMT Under Stencil Wiper Rolls

The objective of this White Paper is to provide users of the above products in the electronics industry a clear understanding of the different types of stencil cleaning paper/fabrics that are currently available. Fine pitch applications are more the norm now and so the performance of stencil cleaning rolls is more critical than ever before. This White Paper will give solder paste stencil printing engineers and purchasing professionals an insight into the main products on the market, thereby enabling them to make informed decisions.

Credit: Swiftmode Malaysia (Penang) Sdn Bhd

SMT Stencil Cleaning: A Decision That Could Impact Production

Ultrasonics, coupled with an aqueous detergent process that cleans at below 43°C, may be best suited for fine-pitch SMT screens and stencils. Aqueous detergents clean more effectively than solvents, with little or no environmental impact. Because of the environmental concerns driving today's technology decisions, the once simple decision of selecting a stencil cleaning process is now clouded with different chemicals, different cleaning machines and various types of solder paste, all with specific environmental, health and safety related issues and regulations.

Credits: Xerox

What Cannot Be Cleaned In a Stencil Cleaner

The stencil cleaner can be one of the most versatile tools on the manufacturing floor. It can be used to clean electronic modules in various stages of the manufacturing process. In fact, an automated stencil cleaner can clean just about anything you come up against in your PCB assembly process.

Credits: Austin American Technology

Evaluation of Under-Stencil Cleaning Papers

Solder paste screen printing is known to be one of the most difficult processes to quality assure in Printed Board Assembly (PBA) manufacturing. An important process step in solder paste screen printing is the under stencil cleaning process and one of the key materials in this process is the cleaning paper1. This, often neglected, material affects the cleaning process and thereby also the print quality. It is therefore important to perform tests of different cleaning papers before one could be chosen. This article describes how cleaning papers can be tested and it also tells how big differences it can be between different materials.

Credits: Ericsson AB

SEE Forum results for related keywords - stencil cleaning -- 1162

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█ Printed Circuit Board Assembly & PCB Design Forum

Silicone Coat + BGA masking -- Looking for advise (see subject). I'm currently damming the gap between pcb and bga body to avoid coat underfill. Per IPC CC 830C "When a conformal coating is used to completely underfill such a device, the differences in CTE place a great deal of stress on the interconnect leads." Would like to forgo damming since it's done manually and is process intensive. I would like to use boots or a fixture, but I'm concerned about leeching due to bad seal (im using silicone). Does anyone have any tips and tricks?

Search a program on MPM Momentum -- Good day everyone. We have a MPM Momentum printer with over 700 programs, and every time we need to search through a large number of programs to find the one we need. Is there a more efficient way to search? Thank you all in advance.

SEARCH the PCB Assembly Forum VISIT the PCB Assembly Forum...

█ SMT, PCB Electronics Assembly Manufacturing Industry News

Impossible Objects' Jeffrey DeGrange Awarded 2023 SME Industry Achievement Award for Contributions to Additive Manufacturing

Impossible Objects is proud to announce that Jeffrey DeGrange has been selected as the recipient of the 2023 SME Industry Achievement Award. SME, the nonprofit association committed to advancing the widespread adoption of manufacturing technologies and developing North America's talent and capabilities, announced the winners of its Additive Manufacturing Industry Awards at RAPID + TCT 2023, North America's largest and most influential additive manufacturing (AM) event....

3M Electrical Solutions Division

Impossible Objects - Received SME Award

Electronics Industry Welcomes Reintroduction of Bipartisan Proposal to Boost U.S. Printed Circuit Board Sector

Legislation complements Biden's "Presidential Determination" on PCBs...

Association Connecting Electronics Industries (IPC)

SMTA Capital Chapter's Expo and Tech Forum to be Held on May 23rd

The SMTA Capital Chapter is pleased to invite you to its upcoming Capital Expo and Tech Forum at Johns Hopkins University / Applied Physics Lab, Kossiakoff Center, 11100 Johns Hopkins Road, Laurel, MD 20723, on Tuesday, May 23rd....

Surface Mount Technology Association (SMTA)

GET more Electronics Assembly Manufacturing News...

█ SMT / PCB Products & Services

NEW SMT / PCB EQUIPMENT & SERVICES - For Sale

PCB SOFTWARE

ProntoPLACE SMT & Thru-hole Software

Unisoft

PCB ASSEMBLY

PCB Fab & Assembly

Imagineering

REFLOW OVEN

Voidless / Vacuum Reflow Soldering Oven

Heller

PCB DISPENSING

Island Series Table Top Dispensers

GPD Global

Reflow

PCB Reflow Oven Machine I.C.T Lyra Series

I.C.T

SELECTIVE SOLDERING

Pillarhouse Jade Handex

Pillarhouse USA

INSPECTION

MIRTEC GENESYS-PIN - 3D AOI for PIN inspection

MIRTEC Corp

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 - 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

Assembleon AX201

KD Electronics - Assembleon AX201

KD Electronics

AOI INSPECTION

Viscom S3088 Ultra Chrome 3D AOI

Lewis & Clark Viscom S3088 AOI

Lewis & Clark

DEK NEOHORIZON 03iX

SMTUnion - DEK NEOHORIZON 03iX

SMTUnion

Gen'l Purpose T&M

Zeiss LSM-880 Laser Scanning Microscope

World Equipment Source, LLC

P&P / FEEDERS

Panasonic NPM-W P&P

AllSurplus Panasonic NPM-W P&P

AllSurplus

	VIEW More Used Equipment For Sale...
This past year, the number of your RFQs that SMTnet sent to these suppliers was: 109	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

WIRE STRIPPERS

Autosplice SAS/2

Baja Bid - Autosplice SAS/2

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

Currently, no scheduled events are on SMTnet

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