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SMTnet Express, September 19, 2019, Subscribers: 32,226, Companies: 10,884, Users: 25,126

Technical Library

How Detrimental Production Concerns Related to Solder Mask Residues Can Be Countered by Simple Operational Adaptations

Credits: Atotech

The symbiotic relationship between solder masks and selective finishes is not new. The soldermask application is one of the key considerations to ensure a successful application of a selective finish. The selective finish is the final chemical step of the PCB manufacturing process, this is when the panels are at their most valuable and are unfortunately not re-workable. (...)

This paper will focus on the chemical characteristics and use them to predict or identify potential issues before they occur rather than specifically name 'critical' soldermasks. It is also the intention of this paper to address the potential of a soldermask to react to common yield hiking practices like UV bumping and oven curing...

Forum search results for related keywords: soldermask, ionic contamination .

SMT / PCB Products






SMTAI Booth # 823

Solder Paste Stencils

BEST, Inc.

Hand Assembly

Virtual Industries


GPD Global


SlingShot Assembly



SMD Reel Storage




SMTAI Booth # 623



SMTAI Booth # 207





SMTAI Booth # 305


Seika Machinery

SMTAI Booth # 410



SMTAI Booth # 632

SMT / PCB Equipment Auctions

Test & Measurement & Semiconductor Manufacturing Assets

Closing: September 26 | Goindustry DoveBid

Griffin Ltd. - Online SMT Auction

Featuring: Mydata, Dek, Panasonic, Yestech, Aquatherm, RPS Rhythm, Glenbrook, MPM, Alpha Metals, Air-Vac, and More!!!

September 23 - 26 | Baja Bid

Electronic Equipment Mart

X-Tek Hawk Microfocus

X-Ray Inspection

GoIndustry DoveBid

MPM Accela

Screen Printers

Capital Equipment Exchange

Mydata MY100LXe-10

Pick and Place/Feeders

Baja Bid

Koh Young KY-3030VAXL 3D

SPI / Solder Paste Inspection

IBE SMT Equipment

Camalot, MPM, Quad Parts

Pick and Place/Feeders

PPM Parts

WDS-750 BGA Rework


Qinyi Electronics Co.,Ltd

Events Calendar

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

IPC Tech Ed Webinar Series - Electrostatic Discharge Control - Game Changing Threats -FREE Introduction Webinar | September 24 | IPC

PCB Cleaning Webinar Series | ZESTRON Corporation

i4.0 Connect Forum | HELLER Industries

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

Online SMT Auction Sept. 23 - 26- Including: Mydata, DEK, Panasonic, Yestech, & more...

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

Experience the Blackfox Difference - Premier IPC Training & Certification Center

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

Software for PCB Manufacturing - Unisoft

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

Zestron PCB Cleaning Academy

AccuStock��� Automatic Reel Component Storage (ASRS)

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

Selective Conformal Coating System - GPD impleCoat

Vacuum Tweezers - pick up small components with ease

HELLER - Choose an Oven for Your Reflow Needs

Used SMT Equipment - IBE

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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