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SMTnet Express, October 12, 2017, Subscribers: 30,913, Companies: 10,757, Users: 23,915

Technical Library

Mitigation of Pure Tin Risk by Tin-Lead SMT Reflow- Results of an Industry Round-Robin

David Pinsky, Tom Hester - Raytheon, Dr. Anduin Touw - The Boeing Company, Dave Hillman - Rockwell Collins

The risk associated with whisker growth from pure tin solderable terminations is fully mitigated when all of the pure tin is dissolved into tin-lead solder during SMT reflow. In order to take full advantage of this phenomenon, it is necessary to understand the conditions under which such coverage can be assured. A round robin study has been performed by IPC Task group 8-81f, during which identical sets of test vehicles were assembled at multiple locations, in accordance with IPC J-STD-001, Class 3. All of the test vehicles were analyzed to determine the extent of complete tin dissolution on a variety of component types. Results of this study are presented together with relevant conclusions and recommendations to guide high reliability end-users on the applicability and limitations of this mitigation strategy.

Forum search results for related keywords: whisker growth, tin-lead solder, reflow.

SMT / PCB Products


Hand Assembly

Virtual Industries

Surface Finish

Nordson March




GPD Global

Selective Soldering




Material Handling...

Count On Tools

Board Handling - Pallets, Carriers, Fixtures

MB Manufacturing












PDR America


Precision PCB Services

Solder Paste Stencils

BEST, Inc.

SMT / PCB Equipment Auctions

Late Model SMT Equipment and Quality Machine Tools

SMT Equipment - Purchased And Installed 2016 From Samsung...

November 6 - 7 | X-Line

Electronic Equipment Mart

Universal Instruments GC-30S

Pick and Place Equipment/Feeders

Capital Equipment Exchange

DEK Horizon 02i

Screen Printing Equipment

IBE SMT Equipment

PCB Conveyors


JMW Enterprises

Universal Instruments 6380H

Through Hole Equipment

KD Electronics Ltd.


AOI / Automated Optical Inspection

ECM Equipment Sales, Inc.

BTU Pyramax 98A

Reflow Ovens

Recon Inc

Events Calendar

SMTA Guadalajara Tech Forum & Expo | October 18 - 19 | SMTA

IPC Flexible Circuits - HDI Forum | October 17 - 19 | IPC

productronica | November 14 - 17 | Messe Munchen

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

PCB Cleaning Webinar Series | ZESTRON Corporation

Career Center

Manufacturing Engineering Manager

Eden Prairie, MN

Logic PD, Inc.


Dorval (Montreal), Canada

Cancino Technologies Corporation

Senior Design Engineer

Murphy, NC

Aegis Power Systems

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

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

Kyzen Free PCB Cleaning Audit

Europlacer iineo+ SMT pick and place with integrated component tester

Quality Pre-Owned SMT Eequipment - Robo-Tek

Speedprint SP700avi inline SMT screen printer

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

Unused Equipment? - let BajaBid turn your EXCESS ASSETS into cash!

PCB Cleaning products - Zestron

BTU Pyramax reflow oven - global standard of excellence for SMT reflow, semiconductor packaging and LED packaging and assembly.

Fully automatic selective soldering stations - 1 Click SMT - Inline with multiple modules, or standalone for cost effective soldering solutions.

Fluid DISPENSING pumps for integration into your system - GPD Global

Vacuum Tweezers - pick up small components with ease

HELLER - Choose an Oven for Your Reflow Needs

KIC - Making Reflow Ovens Smarter

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

SMT Eequipment & Parts - Recon

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fluid dispensing pumps for integration

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