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SMTnet Express, February 7, 2019, Subscribers: 31,653, Companies: 10,704, Users: 25,698

Technical Library

High Frequency Dk and Df Test Methods Comparison High Density Packaging User Group (HDP) Project

Credits: Oracle Corporation

The High Density Packaging (HDP) user group has completed a project to evaluate the majority of viable Dk (Dielectric Constant)/Df (Dissipation Factor) and delay/loss electrical test methods, with a focus on the methods used for speeds above 2 GHz. A comparison of test methods from 1 to 2 GHz through to higher test frequencies was desired, testing a variety of laminate materials (standard volume production with UL approval, low loss, and "halogen-free" laminate materials). Variations in the test board material resin content/construction and copper foil surface roughness/type were minimized. Problems with Dk/Df and loss test methods and discrepancies in results are identified, as well as possible correlations or relationships among these higher speed test methods.

Forum search results for related keywords: high frequency.

SMT / PCB Products


Surface Finish

Nordson March

Hand Assembly

Virtual Industries


SlingShot Assembly




GPD Global

Board Handling - Pallets, Carriers, Fixtures

Count On Tools





Seika Machinery




ASC International




PDR America

SMT / PCB Equipment Auctions

Online SMT Auction Featuring Items From STS

Including: Mydata MY19, Mydata Agilis Feeder Magazines, Mydata Agilis Feeders & more...

February 25 - 28 | Baja Bid

Complete Closure of Arizona SMT Facility

Complete SMT line w/ plant support Schleuniger wire strippers, Hepco lead forming, crimping...

February 19 - 21 | X-Line Asset Management

Electronic Equipment Mart

Aqueous Tech. Trident LD

Board Cleaners

IBE SMT Equipment

BTU Pryamax 98

Soldering - Reflow

X-Line Asset Management

Speedline AP Excel

Screen Printers

Baja Bid

PCB Conveyors


JMW Enterprises

V-TEK Versacount SMD Counter

Tape and Reel

Capital Equipment Exchange

Assembleon Topaz-X

Pick and Place/Feeders

LEL Semi

Events Calendar

Pan Pacific Microelectronics Symposium 2018 | February 11 - 14 | SMTA

IPC & WHMA Wire Harness Manufacturing Conference | February 19 - 22 | IPC

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

Career Center

Urgently required: Jobs In Nashik


Nashik, India | Paramount Enterprises

Technical Engineer


Albany, NY | YINCAE Advanced Materials, LLC.

SMT Operator


Bourne, MA | Onset Computer Corp.

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

Europlacer iineo+ SMT pick and place with integrated component tester

3D SPI, 3D AOI, 3D AXI - Seamless inspection, and testing solution - TRI

Kyzen Free PCB Cleaning Audit

Speedprint SP700avi inline SMT screen printer

Online SMT Auction February 25 - 28: Featuring SMT Equipment From STS

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

NEW Fully featured benchtop dispenser - GPD Global

Vacuum Tweezers - pick up small components with ease

KIC - Making Reflow Ovens Smarter

Innovative aqueous and solvent based technologies for cleaning PCBs

Automated dispensing for every application. Indispensable.

Discover the Next Generation of Electronics Inspection - Join the YXLON EVOlution

Turn-Key PCB Prototypes - On Your Bench in 5 Days

Late model SMT equipment Auctions - X-Line Asset Management

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Facility Closure

IPC Training & Certification - Blackfox