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SMTnet Express, March 15, 2018, Subscribers: 31,317, Companies: 10,908, Users: 24,499

Technical Library

SMT Stencil, Surface Performance Returning to Basics in the SMT Screen Printing Process to Significantly Improve the Paste Deposition

Jim Villalvazo; InterLatin

The SMT assembly process is continuously challenged by the factors which enhance circuit board performance and limit productivity. The pick and place and reflow systems reflect these driven issues by adding more and more controls to their systems, but the fact is one of the age old processes continues to operate within the same rules since the dawn of the SMT assembly world: The SMT screen printing. (...)

This paper showcases a new stencil process that was discovered by reverting to the basics:understanding the reason for each stencil material process, focusing on detailed finishes and a disciplined aperture design process, maintaining original designs, and making the correctly designed apertures to control the paste deposition. The test results drove us to focus the efforts on the aperture walls.

Forum search results for related keywords: paste deposition, screen printing, stencils, nano-coating.

SMT / PCB Products

PCB ASSEMBLY EQUIPMENT

Dispensing

GPD Global

Pick & Place

Count On Tools

Board Handling - Pallets, Carriers, Fixtures

MB Manufacturing

Reflow

Heller

Hand Assembly

Virtual Industries

Surface Finish

Nordson March

PCB CLEANING

PCB INSPECTION

Cleaning

ZESTRON

Inspection

Mirtec

Inspection

YXLON

PCB REWORK

PCB SOFTWARE

Rework

PDR America

Rework

Kurtz Ersa

Software

Unisoft

SMT / PCB Equipment Auctions

March ETM-SMT Exchange Featuring Leading Contract Manufacturer and Leading Digital Sound Laboratory

March 19 - 20
X-Line

Electronic Equipment Mart

MPM UP 2000 HiE

Screen Printing Equipment

Recon Inc

Yamaha YV100XG

Chipshooters / Chip Mounters

KD Electronics Ltd.

PCB Conveyors

Conveyors

JMW Enterprises

Universal Instruments GC-30S

Pick and Place Equipment/Feeders

Capital Equipment Exchange

Viscom S-3088 AOI

AOI / Automated Optical Inspection

ECM Equipment Sales, Inc.

DEK Horizon 03i FP iPlus

Screen Printing Equipment

IBE SMT Equipment

Events Calendar

IPC High Reliability Forum | May 15 - 17 | IPC

Electronics in Harsh Environments Conference | April 24 - 26 | SMTA

PCB Cleaning Webinar Series | ZESTRON Corporation

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

Career Center

Senior Design Engineer

Murphy, NC

Aegis Power Systems

Industry Associations Events

SMTA

SMTA - Surface Mount Technology Association 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

IPC

IPC - Association Connecting Electronics Industries 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

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard

SMTnet.com, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

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Used PCB Assembly Equipment - CE Exchange

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Nitrogen Capable SMD & BGA Rework Station

Dual Applicators for Non-Atomized Conformal Coating Improve High-Volume Manufacturing

Kyzen Free PCB Cleaning Audit

Fast INSPECTION & automatic COMPONENT REEL COUNTING with XQuik AccuCount - Compact X-Ray system

Cogiscan TTC solutions - The enabling technology for Industry 4.0

PCB Cleaning products - Zestron

Europlacer iineo+ SMT pick and place with integrated component tester

Speedprint SP700avi inline SMT screen printer

Quality Pre-Owned SMT Eequipment - Robo-Tek

Soldertools.net - Rework Tools

NEW Fully featured benchtop dispenser - GPD Global

Vacuum Tweezers - pick up small components with ease

HELLER - Choose an Oven for Your Reflow Needs

Discover the Next Generation of Electronics Inspection - Join the YXLON EVOlution

Late model SMT equipment Auctions - X-Line Asset Management

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