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SMTnet Express, April 30, 2015, Subscribers: 22,686, Members: Companies: 14,334 , Users: 38,119

Technical Library

Signal Transmission Loss due to Copper Surface Roughness in High-Frequency Region

Elaine Liew; Mitsui Copper Foil Malaysia, Shah Alam Malaysia, Taka-aki Okubo, Toshio Sudo; Shibaura Institute of Technology, Toshihiro Hosoi, Hiroaki Tsuyoshi, Fujio Kuwako; Mitsui Kinzoku Group

Higher-speed signal transmission is increasingly required on a printed circuit board to handle massive data in electronic systems. So, signal transmission loss of copper wiring on a printed circuit board has been studied. First, total signal loss was divided into dielectric loss and conductor loss quantitatively based on electromagnetic theory. In particular, the scattering loss due to surface roughness of copper foil has been examined in detail. And the usefulness of the copper foil with low surface roughness has been demonstrated.

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Forum search results for related keywords: copper wiring, dielectric, high-frequency.

SMT / PCB Products




Nordson Asymtek




BEST, Inc.


Chase Electronic Coatings



SP700avi Inline Stencil Printer




GPD Global

Pick & Place




Solder Materials

Stellar Technical Products




VJ Electronix

Solder Materials


Tape and Reel Equipment

Mid America Taping and Reeling

Pick and Place


SMT / PCB Equipment Auctions

Surplus Equipment From OSI Electronics

May 1 - 6
Baja Bid

Late Model Conformal Coating Systems & Electronic Manufacturing Equipment

Bids Due: August 31

GoIndustry DoveBid

Electronic Equipment Mart

Koh Young KY-3030VAL

Inspection Equipment

AdoptSMT Europe



JMW Enterprises

Pick and Place

Pick and Place Equipment

Shenzhen Tek...

Koh Young KY-3020T


IBE SMT Equipment

Fuji NXT M3S

Chipshooters / Chip Mounters

Tekmart International Inc.

Glenbrook RTX113

X-Ray Equipment

X-Line Asset Management

Quad Parts, Feeders, Nozzles

Pick and Place Equipment

PPM Parts

Creative Electron TruView Prime

X-Ray Equipment

CE Exchange


Repair/Rework Equipment

KD Electronics Ltd.

Events Calendar

Design & Assembly of 0201, 01005 and Next Generation Chips

Online Webinar | May 11 |

2015 PCB Cleaning Webinar Series

Online Webinar | ZESTRON

SMT Hybrid Packaging

Nuremberg, Germany | May 5 - 7 | Mesago Messe Frankfurt GmbH

Career Center


Field Service Engineer

Longmont, CO, USA | A-Tek Systems Group LLC

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: SMTA Webtorial: PCB Cleaning: Applications, Analytics and Solutions - May 6 - 13


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

PCB Cleaning products - Zestron

Custom SMT Equipment Nozzles - Count on Tools

Software for PCB Manufacturing - Unisoft

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

Used SMT Equipment

Industrial cameras

JTAG boundary scan

AIM M8 No-Clean Solder Paste

Essemtec Scorpion SMT pick and place

ii-Feed tape feeding solution for Europlacer machines

Used SMT Equipment - IBE

Choose an Oven for Your Reflow Needs

3D SMT AOI - Mirtec

SP700avi inline smt screen printer - Speedprint

Quantum Series In-Line, Large-Format Fluid Dispensing for SMT, PCB, and MEMS - Nordson Asymtek

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