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SMTnet Express, March 24, 2022, Subscribers: 25,784, Companies: 11,563, Users: 27,157

XRF Technology In The Field - XRF Technology For Non-Scientists

X-ray fluorescence (XRF): a non-destructive analytical technique used to determine the chemical composition of materials XRF occurs when a fluorescent (or secondary) X-ray is emitted from a sample that is being excited by a primary X-ray source. Because this fluorescence is unique to the elemental composition of the sample, XRF is an excellent technology for ...

Credits: Thermo Fisher Scientific

Smart Determination of Gold Content in PCBs ofWaste Mobile Phones by Coupling of XRF and AAS Techniques

Quantitative determination of most economic valuable metals in waste is the first fundamental operation of evaluating the feasibility of recycling processes. Field-portable X-ray fluorescence spectrometers (FPXRFs) represent a more practical, efficient, and economic tool in determining the elemental composition of samples with respect to conventional analytical ....

Credits: University of L'Aquila

Non-Destructive Characterization of Mechanically Processed Waste Printed Circuit Boards: X-ray Fluorescence Spectroscopy and Prompt Gamma Activation Analysis

This work aimed to characterize the deportment/concentration and liberation/association of the metals and light elements within mechanically processed waste printed circuit boards (PCBs) that hold the complex and heterogeneous structure and distribution of different material components. Waste PCBs passed through a series of mechanical processing (i.e., comminution and ....

Credits: Ecole Nationale Superieure de Geologie

Analysis of Circuit Boards and Electrical Connectors for RoHS/WEEE Regulated Elements Using XRF

Manufacturers and suppliers of electronic and electrical products to member states within the EU must comply with RoHS (Restriction of Hazardous Substances) and WEEE (Waste from Electrical and Electronic Equipment) regulations. Six materials are restricted under these directives: lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr VI), polybrominated ...

Credits: SPEX® SamplePrep

Coating Thickness Measurement of Thin Gold and Palladium Coatings on Printed Circuit Boards using X-Ray Fluorescence

The purpose of this paper is to compare the performance of X-ray fluorescence (XRF) instruments with different detector systems (proportional counter, positive intrinsic negative and Si drift detectors) for measuring thin Au and Pd coatings on printed circuit boards and to investigate different ways of background treatment. It also aims to provide and certify ...

Credits: Fischer Technology

See Forum results for related keywords - xrf : 58

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Labeling before paste printing -- We previously labelled PCBs after assembly but before AOI. Now we need to trace panels during assembly as well, so have the need to apply labels before the assembly process starts. Our stencils are thus not stepped to accommodate labels. I suppose the answer is "it depends..." but are there general guidelines regarding proximity of labels to apertures to ensure that the label will not negatively impact the print?

DEK 265 GSX missprint -- hi, I have a 265GSX machine that prints firs PCB in batch correctly and then missprints the rest(there may be acceptable prints by accident). after hitting END RUN and RUN again, first PCB comes out perfect but others are bad. paste is randomly shifted on X axis left and right by up to 0.5 mm approximately. I tried loading MINT and changing Euro SYS card No3(address 2) with same results. any idea what may be wrong? thank you in advance.

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Nordson sponsors new Innovation Lab for engineering at California State University at San Marcos

Ribbon-cutting ceremony held after 2-year delay celebrated new lab space for engineering students... | Nordson Corporation

Air purification for clean processes in electronics manufacturing

ULT demonstrates fume extraction solutions for emission reduction at SMTconnect... | ULT LLC

Europa Clipper Harness Engineer Jacklyn Perry to Deliver Keynote at Electrical Wire Processing Technology Expo (EWPTE)

How will a spacecraft harness connect every electrical device on the Europa Clipper, a Jupiter-orbiting spacecraft that will study Jupiter's icy moon Europa? Jacklyn Perry, harness engineer at Johns Hopkins ... | IPC

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EVENTS

Houston Expo & Tech Forum | March 24 | SMTA

Space Coast Chapter Technical Meeting: Printed Wiring Board Fabrication Design Attributes | April 7 | SMTA

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Component Identification Online Live Certification

Mar 25, 2022 | New Hampshire, Manchester | EPTAC Corporation

IDEA-STD-1010 Essentials For Counterfeit Component Identification Online Live

Apr 13, 2022 | New Hampshire, Manchester | EPTAC Corporation

Counterfeit Components Workshop Online Live Training

Apr 15, 2022 | New Hampshire, Manchester | EPTAC Corporation

SMT Processes Certification Course

Apr 19-21, 2022 | Wisconsin, Germantown | Surface Mount Technology Association (SMTA)

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RESUMES - Post your resume now

Field Service Engineer
Florham Park, NJ | Heller Industries Inc.

SMT Process Engineer
Milwaukee, WI | Cree Lighting

Soldering Technician, Touch-up for PCBAs
Santa Cruz, CA | Dynamic Engineering

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Suwanee, GA | MacDermid Alpha Electronics Solutions

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Nashville, NC | ACDi

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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.
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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.
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Editor - Dave "davef" Fish (submit your technical articles)

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