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Express Newsletter

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SMTnet - where else would you meet over 500,000 industry professionals? Turn-Key PCB Prototypes - On Your Bench in 5 Days.

SMTnet Express, July 18, 2019, Subscribers: 32,162, Companies: 10,836, Users: 24,951

Technical Library

Via Fill and Through Hole Plating Process with Enhanced TH Microdistribution

Credits: MacDermid Inc.

The increased demand for electronic devices in recent years has led to an extensive research in the field to meet the requirements of the industry. Electrolytic copper has been an important technology in the fabrication of PCBs and semiconductors. Aqueous sulfuric acid baths are explored for filling or building up with copper structures like blind micro vias (BMV), trenches, through holes (TH), and pillar bumps. As circuit miniaturization continues, developing a process that simultaneously fills vias and plates TH with various sizes and aspect ratios, while minimizing the surface copper thickness is critical. (...)

In this paper, an optimization of recently developed innovative one step acid copper plating technology for filling vias with a minimal surface thickness and plating through holes is presented.

Forum search results for related keywords: copper electroplating, via fill.

SMT / PCB Products



GPD Global

Solder Paste Stencils

BEST, Inc.

Hand Assembly

Virtual Industries





Assembly Services

SlingShot Assembly



SMD Reel Storage











Seika Machinery



SMT / PCB Equipment Auctions

Late Model Metal Fabrication, CNC Bending & Machining Complete Closure of 110,000 SF Silver Creek Facility

September 3 - 5 | X-Line Asset Management

SMT Online Auction Featuring Items From Petra Electronics

July 25 - 31 | Baja Bid

Electronic Equipment Mart

Mydata MY100LXe-10

Pick and Place/Feeders

Baja Bid

Austin American Tech. X30A

Stencil Cleaners

IBE SMT Equipment

Vi Technology 5K

AOI / Automated Optical Inspection

LEL Semi

Quad Parts, Feeders, Nozzles

Pick and Place/Feeders

PPM Parts

YXLON Cheetah SMT X-Ray

X-Ray Inspection

Capital Equipment Exchange

Fuji XPF - W

Pick and Place/Feeders

X-Line Asset Management

Events Calendar

SMTA International 2019 Conference & Exhibition | September 22 - 26 | SMTA

IPC Tech Ed - Process and Acceptability Requirements: Utilizing J-STD-001 and IPC-A-610 Together | September 10 | IPC

PCB Cleaning Webinar Series | ZESTRON Corporation

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

Career Center

Electronics Experts Needed - Contract Jobs

offered by: Performance Review Institute

An excellent contract job opportunity for consultants or recent retirees

Do you have experience in some or all of these processes: Printed Boards, or Printed Board Assemblies, or Cable and Wire Harness Assemblies? We have ELECTRONICS AUDITOR positions available now!

US and International Travel, Flexible scheduling, Competitive compensation and travel expenses...

Click for more information »»

Industry Associations Events


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


Used PCB Assembly Equipment - CE Exchange

SMTA International 2019 - Learn about the latest equipment and technology from over 170 exhibiting companies!

Online SMT Equipment Auction - Including: Mydata, GPD, Manncorp, Yestech, & more... July 25 - 31

Experience the Blackfox Difference - Premier IPC Training & Certification Center

Ecolloy - New Low Dross, Low Voids Solder Materials from Qualitek

Software for PCB Manufacturing - Unisoft

AccuStock��� Automatic Reel Component Storage (ASRS)

Used SMT Equipment - IBE

Hioki 1240 Flying Probe Tester - ultra-high speed measuring, fine pitch inspection.

Zestron PCB Cleaning Academy

Custom SMT Nozzles and Tools - Count on Tools

MIRTEC MV 6 OMNI High-Speed / High-Performance 3D AOI MACHINE. - Rework Tools

Selective Conformal Coating System - GPD impleCoat

Vacuum Tweezers - pick up small components with ease

HELLER - Choose an Oven for Your Reflow Needs

Quality Pre-Owned SMT Eequipment - Robo-Tek

SMT Parts Store Online - MPM, Camalot, Quad, Mirae - nozzles, feeders, accessories.

SMTnet - Electronic Industry Hub

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Jade Series Selective Soldering Machines

ICT Total SMT line Provider