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SMTnet - where else would you meet over 500,000 industry professionals? SMT Equipment Auction -Among others: FUJI Pick & place lines, ORBOTECH inspection lines, ZEVAC Rework stations, ANGELANTONI Climatic cells, AGILENT-HP X-ray inspection, HEBB Laser rework stations , MPM Screen printers, loaders, unloaders, feeders, welding equipment, microscopes. - Troostwijk Auctions

SMTnet Express, May 14, 2015, Subscribers: 22,738, Members: Companies: 14,345 , Users: 38,183

Technical Library

Reliability of Stacked Microvia

Hardeep Heer, Ryan Wong; Firan Technology Group

The Printed Circuit Board industry has seen a steady reduction in pitch from 1.0mm to 0.4mm; a segment of the industry is even using or considering a 0.25mm pitch. This has increased the use of stacked microvias in these designs. The process of stacking microvias has been practiced for several years in handheld devices; however, the devices generally do not operate in harsh conditions. Type 1 and Type 2 microvias have been tested over the years and have been found to be very reliable. We do not have enough test data for 3 and 4 stack microvias when placed on and off buried via. The main objective of this study was to understand the reliability of 3 and 4 stack microvias placed on and off a buried via.

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Forum search results for related keywords: microvias, stackup.

SMT / PCB Products





Pick and Place




Solder Paste Stencils

BEST, Inc.

Material Handling/Storage


Solder Materials





ASC International



Pick & Place




Pick & Place



GPD Global

The Mark III Reflow System



SP700avi Inline Stencil Printer



SMT / PCB Equipment Auctions

SMT Equipment Auction | May 19 - 28 | Troostwijk Veilingen B.V.

Among others: FUJI Pick & place lines, ORBOTECH inspection lines, ZEVAC Rework stations, AGILENT-HP X-ray inspection, MPM Screen printers, loaders, unloaders, feeders, welding equipment, microscopes.

Electronic Equipment Mart

Quad Parts, Feeders, Nozzles

Pick and Place Equipment

PPM Parts

Creative Electron TruView Prime

X-Ray Equipment

CE Exchange

Yamaha YV 100XG

Chipshooters / Chip Mounters

KD Electronics Ltd.

Essemtec CDS6200-LC

Adhesive Dispensing Equipment

AdoptSMT Europe GmbH

Technical Devices Nu/Clean 318-XL WT Water Wash

Cleaning Equipment & Supplies

JMW Enterprises, Inc.

Pick and Place

Pick and Place Equipment

Shenzhen Tek...

Heller 1707-EXL Reflow Oven

Reflow Ovens

IBE SMT Equipment

Cyberoptics Flex Ultra HR

AOI / Automated Optical Inspection

Tekmart International Inc.

Glenbrook RTX113

X-Ray Equipment

X-Line Asset Management

Events Calendar

Void Formation in Solder Joints � Causes & Cures

Online Webinar | May 18 |

2015 PCB Cleaning Webinar Series

Online Webinar | ZESTRON

Carolinas Expo & Tech Forum

Charlotte, NC, USA | May 19 | SMTA

Career Center


Plant Manager

San Jose, CA, United States | AIMS International

Global Applications Manager - Electronic Materials

South Plainfield, NJ, USA | Alpha

ATE field service engineer/technician

Atlanta, GA, USA | Seika Machinery, Inc.


Service Engineer and Process Engineer

Chennai, Tamil Nadu, India

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

Next Event: Toronto SMTA Expo & Tech Forum - May 15


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 Programs | Standards & Publications - Online Store

Next Event: SMTA Webtorial: Higher Density Packaging: Manufacturability & Reliability - June 9

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

Used SMT Equipment

Software for PCB Manufacturing - Unisoft

Custom SMT Equipment Nozzles - Count on Tools

XQuik - compact benchtop X-ray inspection system

ii-Feed tape feeding solution for Europlacer machines

PCB Equipment Auctions - X-Line

Fluid Pressure Control - a breakthrough in uniform fluid dispensing - GPD Global

Choose an Oven for Your Reflow Needs

SP700avi inline smt screen printer - Speedprint

Used SMT Equipment - IBE

PCB Cleaning products - Zestron

JUKI's machines offer you the Lowest Cost of Ownership in the industry.

3D SMT AOI - Mirtec

Let BAJA Bid Turn Your Excess Or Unused Assets Into Cash!

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