Signal-integrity and power-integrity literature, web links, September 2021

Books on signal integrity, power integrity, EMC:
Peter J. Pupalaikis: S-Parameters for Signal Integrity. Cambridge University Press, March 31, 2020
George M. Kunkel: Shielding of Electromagnetic Waves. Theory and Practice.  Springer, 2020
Ralph Morrison: Fast Circuit Boards: Energy Management. Wiley 2018
Robert A. Mammano: Fundamentals of Power Supply Design.  Texas Instruments, 2017
Larry Smith, Eric Bogatin: Principles of Power Integrity for PDN Design--Simplified: Robust and Cost Effective Design for High Speed Digital Products. Prentice Hall, April 2017
Christophe Basso:  Linear Circuit Transfer Functions.  Wiley - IEEE Press, 2016
Ralph Morrison: Grounding and Shielding: Circuits and Interference. Wiley, 2016
Douglas Brooks: PCB Trace and Via Currents and Temperatures: The Complete Analysis.  CreateSpace Independent Publishing Platform.  April 2016
Hanqiao Zhang, Steve Krooswyk, Jeff Ou: High Speed Digital Design.  Elsevier Inc., 2015
Patrick André, Ken Wyatt: EMI Troubleshooting Cookbook for Product Designers. Scitech Publishing, July 2014
Steven Sandler: Power Integrity.  McGraw-Hill, 2014.
Douglas Brooks: PCB Currents: How They Flow, How They React. Prentice Hall, May 2013.
Douglas Brooks: Signal Integrity Issues and Printed Circuit Board Design.  Prentice Hall, October 2012
Christophe Basso: Designing Control Loops for Linear and Switching Power Supplies: A Tutorial Guide.  Artech House, September 2012
Sanjaya Maniktala: Switching Power Supplies A-Z.  Newnes, 2012
Er-Ping Li: Electrical Modeling and Design for 3D System Integration: 3D Integrated Circuits and Packaging, Signal Integrity, Power Integrity and EMC. Wiley-IEEE, April 2012
Toni Lopez, Reinhold Elferich, Eduard Alarcon: Voltage Regulators for Next Generation Microprocessors, Pringer, 2011
Renatas Jakushoka, et al.: Power Distribution Networks with On-Chip Decoupling Capacitors.  Springer, 2011
Dan Oh, Chuck Yuan: High-Speed Signaling: Jitter Modeling, Analysis, and Budgeting.  Prentice Hall, October 2011
Bob Dobkin, Jim Williams: Analog Circuit Design.  Newnes-Elsevier, 2011
Raj Nair, Donald Bennett: Power Integrity Analysis and Management for Integrated Circuits.  Prentice Hall, 2010
Vishram Pandit: Power Integrity for I/O Interfaces: With Signal Integrity/ Power Integrity Co-Design. Prentice Hall, October 2010
Andrzej  Trzynadlowski: Modern Power Electronics.  Wiley, 2010
Jose Moreira, Hubert Werkmann: An Engineer's Guide to Automated Testing of High-Speed Interfaces.  Artech House, July 2010
Joffe, Lock: Grounds for Grounding. Wiley-IEEE, 2010
Paul G. Huray: The Foundations of Signal Integrity. Wiley-IEEE, 2010
Clayton Paul: Inductance, Loop and Partial.  Wiley-IEEE Press; 1st edition, December 30, 2009
Henry W Ott: Electromagnetic Compatibility Engineering. Wiley Interscience, 2009
Stephen Hall, Howard Heck: Advanced Signal Integrity for High-Speed Digital Designs. IEEE-Wiley, 2009
Mike Resso, Eric Bogatin: Signal Integrity Characterization Techniques.  IEC, 2009
Vikas Shukla: Signal Integrity for PCB Designers. Prentice Hall, February 2009
Spartaco Caniggia, Francescaromana Maradei: Signal Integrity and Radiated Emission in High-Speed Digital Systems.  John Wiley, 2008
Istvan Novak: Power Distribution Network Design Methodologies.  IEC, May 2008
Stauffer, Mechler, Sorna, Dramstad, Ogilvie, Mohammad, Rockrohr: High Speed Serdes Devices and Applications. Springer 2008
Cosmin Iorga: Noise Coupling in Integrated Circuits. NoiseCoupling.com, 2008
Christophe P. Basso: Switch-Mode Power Supplies. McGraw Hill, 2008
Popovich, Mezhiba, Friedman: Power Distribution Networks with On-Chip Decoupling Capacitors.  Kluwer Academic Publishers 2008
Dennis Derickson, Marcus Muller: Digital Communications Test and Measurement. Prentice Hall, January 2008
Madhavan Swaminathan, Ege Engin: Power Integrity Modeling and Design for Semiconductors and Systems.  Prentice Hall, December 2007
Mike P. Li: Jitter, Noise, and Signal Integrity at High-speed.  Prentice Hall, November 2007
Greg Edlund: Timing Analysis and Simulation for Signal Integrity Engineers.  Prentice Hall, November 2007
Istvan Novak, Jason R. Miller: Frequency Domain Characterization of Power Distribution Networks.  Artech House, Boston, 2007
Mike P. Li: Design and Test for Multiple Gbps Communication Devices and Systems. Professional Education International, Inc., IEC, 2005
K. Barry A. Williams: Designing Power Distribution Systems for Electronic Circuits. Aikman Engineering LLC, 2005
David M. Pozar: Microwave Engineering. John Wiley & Sons, Inc., 2005
Mezhiba, Friedman: Power distribution networks in high speed integrated circuits.  Kluwer Academic Publishers, 2004
Dennis Miller: Designing High-Speed Interconnect Circuits.  Intel Press, 2004
John R. Barnes: Robust Electronic Design Reference Book, Volume I and II.  Kluwer Academic Publishers, 2004
Stephen C. Thierauf: High-Speed Circuit Board Signal Integrity.  Artech House, Norwood, MA, 2004
Tom Granberg: Handbook of Digital Techniques for High-Speed Design.  Prentice Hall, 2004
F. W. Grover: Inductance Calculations. Dover Phoenix Editions, 2004
Eric Bogatin: Signal Integrity – Simplified. Prentice Hall, New Jersey, 2004
Howard Johnson, Martin Graham: High-Speed Signal Propagation – Advanced Black Magic. Prentice Hall, New Jersey, 2003
Douglas Brooks: Signal Integrity Issues and Printed Circuit Board Design. Prentice Hall, New Jersey, 2003
Fang Lin Luo, Hong Ye: Advanced DC/DC Converters. CRC Press, London, 2003
Lee W. Ritchey, John Zasio: Right the First Time – A Practical Handbook on High Speed PCB and System Design, Volume One.  Speeding Edge, Summer 2003
Chi Kong Tse: Complex Behavior of Switching Power Converters.  CRC Press, London, 2003
Daniel G. Swanson, Wolfgang J.R. Hoefer: Microwave Circuit Modeling Using Electromagnetic Field Simulation.  Artech House, Norwood, MA, 2003
Richard K. Ulrich, Leonard W. Schaper: Integrated Passive Component Technology.  IEEE Press and John Wiley Interscience, 2003
Les Besser, Rowan Gilmore: Practical RF Circuit Design for Modern Wireless Systems, Volume I, Volume II.  Artech House, Norwood, MA, 2003
Bruce R. Archambeault, James Drewniak: PCB Design for Real-World EMI Control. The Springer International Series in Engineering and Computer Science, July 2002
Ron Schmitt: Electromagnetics Explained.  Newness Elsevier-Science, 2002
Bruce R. Archambeault, Omar M. Ramahi, Colin Brench: EMI/EMC Computational Modeling Handbook (2nd Edition) The Springer International Series in Engineering and Computer Science, August 2001
Stephen Hall, Garrett Hall, James McCall: High-Speed Digital System Design, A handbook of Interconnect Theory and Design Practices. John Wiley and Sons, Inc. New York, 2000
Brian Young: Digital Signal Integrity: Modeling and Simulation with Interconnects and Packages.  Prentice Hall, Inc., NJ, 2000
Keith billings: Switchmode Power Supply Handbook, second edition, McGraw-Hill, 1999
Mark I. Montrose: EMC and the Printed Circuit Board – Design, Theory, and Layout Made Simple.  IEEE Press, New York, 1999
Hartmut Grabinski, Petra Nordholz: Signal Propagation on Interconnects.  Kluwer Academic Publisher, Boston, 1998
Masakozu Shoji: High Speed Digital Circuits.  Addision Wesley, 1997
Don White: The EMC Desk Reference Encyclopedia, EMF-EMI Control, Inc., 1998
Mark I. Montrose: Printed Circuit Design Techniques for EMC Compliance. IEEE Press, 1996
Tocci, Caulfield: Optical Interconnection, Foundations and Applications.  Artech House, 1996
James E. Buchanan: Signal and Power Integrity in Digital Systems: TTL, CMOS, and BiCMOS.  McGraw-Hill, 1996
Anatoly Tsaliovich: Cable Shielding for Electromagnetic Compatibility.  Van Nostrand Reinhold, 1995
Christos Christopoulos: Principles and Techniques of Electromagnetic Compatibility, CRC Press, 1995
Johnson, Graham: High-Speed Digital Design.  A Handbook of Black Magic.  Prentice Hall, 1994
Ashok K. Goel: High-Speed VLSI Interconnections.  Wiley Interscience, New York, 1994
Simon Ramo, John R. Whinnery, Theodore Van Duzer: Fields and Waves in Communication Electronics. John Wiley & Sons, Inc., 1994
H. Bakoglu: Circuits, Interconnections, and Packaging for VLSI. Addison Wesley, 1993
Clayton R. Paul: Introduction to Electromagnetic Compatibility.  John Wiley, 1992
Brian C. Wadell: Transmission Line Design Handbook.  Artech House, 1991
Charles S. Walker:  Capacitance, Inductance, and Crosstalk Analysis.  Artech House, 1990
E. H. Fooks, R. A. Zakarevicius:  Microwave Engineering Using Microstrip Circuits.  Prentice Hall, 1990
R. Djordjevic, T.K. Sarkar, R. F. Harrington, B. Bazdar: Time-Domain Response of Multiconductor Transmission Lines;  Software and User's Manual.  Artech House, 1989
A. R. Djordjevic, T.K. Sarkar, R. F. Harrington, B. Bazdar: Matrix Parameters for Multiconductor Transmission Lines; Software and User's Manual.  Artech House, 1989
Fred E. Gardiol: Lossy Transmission Lines.  Artech House, 1987
Keiser: Principles of Electromagnetic Compatibility, third edition, Artech House, 1987
Takanori Okoshi: Planar Circuits for Microwaves and Lightwaves, Springer-Verlag, Berlin, 1985
H.W. Ott: Noise Reduction Techniques in Electronic Systems, second edition . John Wiley Interscience, NY, 1988
R. E. Matick:  Transmission Lines for Digital and Communication Networks.  McGraw-Hill Book Company, 1975
H. Howe, Jr.:  Stripline Circuit Design.  Artech House, 1974
Georges Metzger, Jean-Paul Vabre:  Transmission Lines with Pulse Excitation.  Academic Press, 1969

WEB links (tested as of September 2021):
Knowledge data bases:
All About Circuits: https://www.allaboutcircuits.com/
SI e-mail reflector/list (SI-List) archive: http://www.freelists.org/archives/si-list/
EDN Magazine: http://www.edn.com/
EE Times magazine: http://www.eetimes.com/
PCB Design 007: http://www.iconnect007.com/
Printed Circuit Design and Manufacture Magazine (formerly also Printed Circuit Fab): http://pcdandm.com/cms/
SI Journal (signal integrity, power integrity, EMC): https://www.signalintegrityjournal.com/
Everything RF: http://www.everythingRF.com
Ransom's Notes (Ransom Stephens): http://www.ransomsnotes.com/
Mixed Signal Group at GeorgiaTech (Madhavan Swaminathan): http://epsilon.ece.gatech.edu/index.html
Bogatin Enterprises, Teledyne-LeCroy SI Academy (Eric Bogatin):  www.BeTheSignal.com
UltraCAD Design Inc, (Douglas Brooks): http://www.ultracad.com/
Schelto van Dorn’s webpage on the physical layer of high-speed digital interconnect standards: http://www.schelto.com/
Wyatt Technical Services (Ken Wyatt's pages): http://www.emc-seminars.com/index.html
Henry Ott Consultants, (Henry Ott, EMC): http://www.hottconsultants.com/
High Speed Digital Design (Dr. Howard Johnson): http://www.sigcon.com
Electrical Integrity (Istvan Novak): http://www.electrical-integrity.com
The Speeding Edge (Lee Ritchey): http://www.speedingedge.com/
EMC and ESD webpage (Doug Smith): http://emcesd.com/
Systems Electromagnetic Compatibility (Michael King): http://www.systemsemc.com
DBi Corporation (John Barnes): http://www.dbicorporation.com/
Keysight Test and Measurement Knowledge Center: https://support.keysight.com/KeysightdCX/s/knowledge-centre-home
Samtec (technical literature): https://www.samtec.com/support/tech-library
Simberian (Yuriy Shlepnev): http://www.simberian.com/AppNotes.php
Picotest (Steve Sandler): https://www.picotest.com/
VNA HELP: https://usb-vna.com/
Texas Instruments Application Note center: http://www.ti.com/sc/docs/apps/index.htm
EE Power (power electronics material): https://eepower.com/
Electronics Point (Electrical Engineering forum): https://www.electronicspoint.com/
Maker (a Make community): https://Maker.Pro/
IPC (Institute for Interconnecting and Packaging Electronic Circuits): http://www.ipc.org/
IBM technical library: https://www.ibm.com/resources/publications
European Patent Office: http://worldwide.espacenet.com/
US Patent Office: http://www.uspto.gov/
Free Patents Online: http://www.freepatentsonline.com/
Free pdf patents: http://www.pat2pdf.org/
CAD tools:
Keysight (was Agilent): https://www.keysight.com/us/en/software.html
ADS, Ptolemy, Momentum and many others
Ansys (also previously Ansoft):  http://www.ansys.com/
Designer, HFSS, Nexxim, Q3D Extractor, SiWave
APLAC (AWR, now Cadence):   https://www.awr.com/awr-software/products/microwave-office
RF Design Tool
Applied Simulation Technology:  http://www.apsimtech.com/
Apsim SPE, Signal, Power and EMI simulator
ARK RF Systems (SPView, SPsim, Planar, Autolab): http://www.arkrfsystems.com/
AtaiTec Corp.: http://www.ataitec.com/
Cadence:  http://www.cadence.com/
Advanced Package, Allegro, SPECCTRAQuest, SPECCTRA, PSpice Studio, OrCAD
COMSOL (Multiphysics software solutions): http://www.comsol.com/
TINA SPICE circuit simulator
Empire (3D field solver): http://www.empire.de/
FEKO (EM simulator): https://www.altair.com/feko/
IdemWorks (now part of CST): www.idemworks.com 
IdEM Identification of Electrical Macromodels
Intusoft:  http://www.intusoft.com/
ICAP/4 8.x.11
Mentor Graphiccshttp://www.mentor.com/products/
ICX/TAU, Hyperlinx LineSim, Hyperlinx BoardSim, Quiet Expert
OptEM Inspector, OptEM Connector, OptEM Cable Designer, OptEM Package, OptEM Interconnect Designer
Nimbic (formerly Physware, now part of Mentor Graphics): http://www.nimbic.com/
3D field solvers
Polar Instruments:  http://www.polarinstruments.com/
Si9000e (Field solver), ToneOhm (short locator)
Pulsonix (SPICE simulator): https://www.pulsonix.com/
REMCOM (EM solvers): http://www.remcom.com/
Sigrity (now part of Cadence)http://www.sigrity.com/
OptimizePI, PowerDC, XtractIM, PowerSI, Broadband SPICE, SPEED2000, Unified Package Designer (UPD)
Silvaco: http://www.silvaco.com/
Simbeor: http://www.simberian.com/
(3D field solver)
Simetrix Technologies (power circuit simulators, SIMPLIS, SIMETRIX): http://www.simetrix.co.uk/
Quantum SI, Quantum Channel Designer
Sonnet 3D Full-wave field solver, CST Microwave Studio
SPSISIM (SI and PI simulators): https://www.spisim.com/
Synopsys (formerly Avant! (formerly Metasoftware Inc.)): http://www.synopsys.com/
Tera Analysis Co.:  http://www.quickfield.com/
Quick Field EM-thermal simulator
Zeeland Software (now part of Mentor Graphics)
Zuken:  http://www.zuken.com/
CR-5000 Lightning (SI and EMC analyzer)
XPeedic (Field solver and channel simulator): http://www.xpeedic.com/
Free, low-cost, demo and on-line tools:
Peter Pupalaikis: Signal and Power Integrity Tools
AtaiTec Corp.: http://www.ataitec.com/
demo TINA SPICE circuit simulator; free node-limited simulator is available through www.ti.com
EECircle:  http://www.eecircle.com/applets/
web-based illustration applets
EMS-PLUS: http://www.ems-plus.com/
Fast Field Solvers (M.I.T.'s FastCap and FastHenry): http://www.fastfieldsolvers.com/
Istvan Nagy's home page (high-speed calculators): http://www.buenos.extra.hu/mycalculators.html
Istvan Novak’s home page:  http://electrical-integrity.com
(free illustration tools on the Tools download page)
Linear Technology (now part of Analog Devices):   https://www.analog.com/en/design-center/design-tools-and-calculators.html
LT SPICE IV, LTpowerCAD, LTpowerPlay, FilterCAD
Visualising Electromagetism, MIT: http://web.mit.edu/viz/EM/
PSPICE student version: https://www.electronics-lab.com/downloads/circutedesignsimulation/?page=5
QUCS (quite Universal Circuit Simulator): http://qucs.sourceforge.net/
RF Page (free tools to plot S parameters): https://www.rfpage.com/free-tools-to-analyze-and-plot-s-parameters-file/
Saturn PCB Design Inc.: http://saturnpcb.com/pcb_toolkit/
(stackup, transmission line and via calculator)
SCILAB (MATLAB-like simulator): http://www.scilab.org/
Sonnet:  http://www.sonnetsoftware.com/products/lite/
SonnetLite 15.53 free planar field solver
Tera Analysis Co.:  http://www.quickfield.com/free_soft.htm
Quick Field student version
Texas Instruments: http://focus.ti.com/docs/toolsw/folders/print/tina-ti.html
Free SPICE program
Thermal Simulation of PCBs (free tool by UlrichRoman.Schratter@edu.campus02.at): https://leiterplatte.jimdo.com/thermal-pcb-sim/
UltraCAD:  http://www.ultracad.com/calc.htm
online calculators
MEATAS VNA Tools:  https://www.metas.ch/metas/en/home/fabe/hochfrequenz/vna-tools.html
More links to free tools (note: some of the links on this site are broken): https://emclab.mst.edu/resources/tools/

Component manufacturers
Agere Systems (formerly Lucent Microelectronics, later part of LSI Logic, later Avago, now Broadcom): http://www.broadcom.com/
Alcor Micro: http://www.alcormicro.com/
Altera programmable logic (now part of and will redirect to Intel): http://www.altera.com/
AMD: http://www.amd.com/
Analog Devices: http://www.analog.com/
Avago Technologies (now Broadcom): http://www.broadcom.com/
Broadcom: http://www.broadcom.com/
Burr-Brown (now Texas Instruments): http://www.ti.com/
Cirrus Logic: http://www.cirrus.com/en/
Cypress: http://www.cypress.com/
Diodes: https://www.diodes.com/
Fairchild Semiconductor (now part of ON Semiconductor): http://www.fairchildsemi.com/products/
Freescale (now part of NXP): http://www.nxp.com/
GoPhotonics (photonics parts): https://www.gophotonics.com/
Hitachi: https://www.hitachi.us/isd/power_devices/
Hynix: http://www.skhynix.com/eng/index.jsp
IBM Microelectronics:  http://www.ibm.com/
IDT (now part of Renesas):  https://www.renesas.com/us/en
Infineon Technologies AG.: http://www.infineon.com
Intel: http://www.intel.com/
International Rectifier (now part of Infineon):  http://www.infineon.com/
IXYS: http://www.ixys.com/
Linear Technology (now part of Analog Devices): http://www.analog.com/
LSI Logic (now part of Broadcom): http://www.broadcom.com/
Marvell: http://www.marvell.com/
Maxim Integrated (now part of Analog Devices): http://www.maximintegrated.com/
Microchip (formerly also Micrel): http://www.microchip.com/
Micron: http://www.micron.com/
MicroSemi (formerly also Actel): http://www.microsemi.com/
Micross: http://www.micross.com/
Nvidia: http://www.nvidia.com/
ON Semiconductor: http://www.onsemi.com/home
Philips Semiconductor: http://www.nxp.com/
PLX (formerly also Oxford Semi; later part of Avago, now Broadcom): http://www.broadcom.com/
PMC Sierra (now part of MicroSemi): http://www.microsemi.com/
Qualcomm: http://www.qualcomm.com/
Rambus: http://www.rambus.com/
Rogers Impedance calculator: https://www.rogerscorp.com/acs/technology/index.aspx
Samsung:  http://www.samsung.com/semiconductor/products/dram/
Renesas:  https://www.renesas.com/
Silicon Labs: http://www.silabs.com/Pages/default.aspx
ST Micro: http://www.st.com/
Texas Instruments: http://www.ti.com/
Toshiba: http://toshiba.semicon-storage.com/us/top.html
Vitesse Semiconductor Corporation (now part of Microsemi):  http://www.microsemi.com/
XILINX programmable logic (to be acquired by AMD?): http://www.xilinx.com/
AVX Corporation (a Kyocera company): https://www.kyocera-avx.com/
EPCOS (previously Siemens, now TDK-EPCOS):  https://en.tdk.eu/
Johanson Dielectrics: https://www.johansondielectrics.com/
Kemet: http://www.kemet.com
Maxwell (acquired by Tesla): http://www.maxwell.com/
Murata Electronics: http://www.murata.com/
NIC Components Corp: http://www.niccomp.com/
Nichicon (electrolytic capacitors): http://www.nichicon.com/
Panasonic: https://na.industrial.panasonic.com/
Passive Plus (RF, Microwave passives): http://www.passiveplus.com/
Samsung:  https://www.samsungsem.com/global/product/passive-component/mlcc.do
Sanyo (now part of Panasonic):  https://na.industrial.panasonic.com/
Taiyo-Yuden: http://www.t-yuden.com/
TDK: https://product.tdk.com/en/products/capacitor/index.html
Tecate Group: http://www.tecategroup.com/
Thin-Film Technology Corp: http://www.thin-film.com/
United Chemi-Con: http://www.chemi-con.com/index.php
Vina Tech: http://www.vina.co.kr/eng/
Walsin Technology Corp.: http://www.passivecomponent.com/products/capacitors/
Vishay: http://www.vishay.com/
X2Y: http://www.x2y.com/
Yageo: http://www.yageo.com
Bourns: http://www.bourns.com/
CTS: http://www.ctscorp.com/
International Manufacturing Services, Inc. (IMS): http://www.ims-resistors.com/
Isotek (current sense resistors): https://www.isabellenhuetteusa.com/
Micro-Ohm Corp (current sense resistors): http://www.micro-ohm.com/
Ohmite: http://www.ohmite.com/
Thin-Film Technology Corp: http://www.thin-film.com/
Vishay: http://www.vishay.com/
Walsin Technology Corp.: http://www.passivecomponent.com/products/resistors/
Inductors, filters:
Bourns: http://www.bourns.com/
Cooper-Bussman/Coiltronics (now part of Eaton):  https://www.eaton.com/us/en-us.html
Fair-Rite: http://www.fair-rite.com/
LeaderTech: https://leadertechinc.com/
Murata Electronics: http://www.murata.com/
Philips inductors: http://www.nxp.com/
Taiyo-Yuden: http://www.t-yuden.com/
TDK: https://product.tdk.com/en/products/inductor/inductor/smd/index.html
Thin-Film Technology Corp: http://www.thin-film.com/
Walsin Technology Corp.: http://www.passivecomponent.com/products/inductors/
Würth Elektronik: http://katalog.we-online.de/en/pbs
X2Y: http://www.x2y.com/
Yageo (also formerly Ferroxcube): http://www.yageo.com
Resonators, oscillators:
AVX Corp.: http://www.avx.com/
Connor-Winfield Corp: http://www.conwin.com/
Crystek: http://www.crystek.com
CTS: http://www.ctscorp.com/
Discrea (MEMS oscillators, now part of Microchip): http://www.microchip.com/
EPSON: http://www.eea.epson.com/
Fox: http://www.foxonline.com/
ILSI (now Abracon): https://abracon.com/brands/ilsi
M-Tron Industries, Inc.: http://www.mtronpti.com/
Maxim, Dallas Semiconductor: https://www.maximintegrated.com/en.html
Murata Electronics: http://www.murata.com/
Nihon Dempa Kogyo Co. (NDK): http://www.ndk.com
Oscilent (now Abracon): https://abracon.com/brands/oscilent
Pericom (formerly also SaRonix, now part of Diodes): https://www.diodes.com/
PI Ceramic: http://www.piceramic.com/company.html
Raltron Electronics Corp.: http://www.raltron.com/
TEMEX (Rakon France SAS): http://www.temex.com/
True Circuits Inc.: http://www.truecircuits.com
Vectron International: http://www.vectron.com
Packages, sockets, interposers:
Amkor: http://www.amkor.com/
Advanced Interconnections: http://www.advintcorp.com/
Kyocera: http://global.kyocera.com/
Samtec: http://www.samtec.com/
Connectors, cables:
Amphenol high-speed cables/connectors: http://www.amphenol.com/
Belden: http://www.belden.com/
Cypress Industries (custom cable assemblies): http://www.cypressindustries.com/custom-cable-assembly.html
ERNI: http://www.erni.com/
FCI (formerly also BERG Electronics, now part of Amphenol): https://www.amphenol-icc.com/
Field Components (custom coaxial connectors and cables): http://fieldcomponents.com/
Fujitsu connectors (discontinued): https://www.fujitsu.com/us/products/devices/components/connectors/
Genesis Connected Solutions: https://genesis-connected.com/
Harting: http://www.harting-usa.com/home/
Hirose: http://www.hirose.com/
Madison Cable, a Tyco Company: http://www.te.com/
MegaPhase: http://www.megaphase.com
Molex: http://www.molex.com/
Peigenesis: https://www.peigenesis.com/
Positronic: http://www.connectpositronic.com/
3M’s Robinson-Nugent: http://www.3m.com/us/
Samtec: http://www.samtec.com/
SGMC Microwave (precision connectors): http://sgmcmicrowave.com/
Siemens Electromechanical Components, a Tyco company: http://www.te.com/
Signal Microwave https://signalmicrowave.com/
Temp-Flex (now part of Molex): http://www.tempflex.com
Carlisle Interconnect Technologies (formerly also Tensolite): http://www.carlisleit.com/
Teradyne (now Amphenol): http://www.amphenol.com/
Tyco (formerly AMP and also M/A-COM): http://www.te.com/
Winchester Electronics: https://www.winconn.com/
W.L.Gore & Associates: http://www.gore.com/
Linear and switching power converters, power supplies:
Advanced Power Electronics: http://www.a-power.com.tw/
Allegro Microsystems: https://www.allegromicro.com/
Analog Devices: http://www.analog.com/en/index.html
Artesyn Technologies (later Emerson Network Power, now Vertiv): https://www.vertivco.com/
ASTEC Power (later Emerson Network Power, now Vertiv):  https://www.vertivco.com/
Bourns: http://www.bourns.com/
CUI Inc.: http://www.cui.com/
Datel (now part of Murata): http://www.murata-ps.com/
Delta: http://www.deltaww.com/
Emerson (now Vertiv):  https://www.vertivco.com/
Enpirion (was part of Altera, now Intel): https://www.intel.com/content/www/us/en/power/programmable/overview.html
Ericsson Power Modules (now part of Flex): https://flex.com/cross-industry-technologies/power
Exar (now part of Maxlinear): https://www.maxlinear.com/
Fairchild Semiconductor (now part of ON Semi): http://www.fairchildsemi.com/
International Rectifier (now part of Infenion): https://www.infineon.com/
Lambda (now part of TDK): https://www.us.lambda.tdk.com/
Intersil (now part of Renesas):  https://www.renesas.com/
Lineage Power (formerly Tyco Electronics, currently GE Energy): https://www.ge.com/power
Linear Technology (becoming part of Analog Devices):  http://www.analog.com/
Mean Well: http://www.meanwell.com/
Maxim Integrated: https://www.maximintegrated.com/en.html
Microchip: http://www.microchip.com/
Monolithic Power Systems: https://www.monolithicpower.com/
Murata: http://www.murata-ps.com/
Power-One (formerly also Di/dt, now part of Bel Fuse): http://belfuse.com/
Powervation (now part of Rohm Semiconductor): http://www.rohm.com/web/global/
Primarion (now Infineon): http://www.infineon.com/cms/en/product/index.html
Richtek (power converter solutions): https://www.richtek.com/
SynQor: http://www.synqor.com/
Texas Instruments (formerly also Unitrode): http://www.ti.com/lsds/ti/analog/powermanagement/power_portal.page
Vicor: http://www.vicorpower.com/
Volterra  (currently Maxim Integrated): https://www.maximintegrated.com/en.html
Printed circuit board laminate suppliers:
AGY (specialty glass): www.agy.com
Arlon (now part of Rogers): http://www.rogerscorporation.com/
DuPont Flexible Circuit Materials: https://www.dupont.com/electronic-materials.html
EMC: http://www.emctw.com/index-e.html
High Quality PCB Co.: http://www.hiquality-pcb.com/Index/index.html
Hitachi Chemical (now Showa Denko): https://www.mc.showadenko.com/english/index.html
ISOLA (formerly also Polyclad): http://www.isola-group.com/
ITEQ: http://www.iteq.com.tw/
Matshushita (Panasonic): https://industrial.panasonic.com/ww/electronic-materials
Nan Ya: http://www.nanyapcb.com.tw/
Nelco: https://www.parkelectro.com/
Nittobo (glass fabric): https://www.nittobo.co.jp/eng/business/glassfiber/pcbcloth/index.html
Oak-Mitsui (now part of Nippon Denkai): http://denkaiamerica.com/
Ohmega: http://www.ohmega.com/
Panasonic (Matshusita): http://industrial.panasonic.com/ww/electronic-materials/products/sp_cbm
Rogers: http://www.rogerscorporation.com/
Rohm & Haas (now Dow): https://www.dow.com/en-us
Sheldahl: http://www.sheldahl.com/
Taconic (now part of AGC): https://www.agc-multimaterial.com/
TUC: http://www.tuc.com.tw/
Ventec: http://www.venteclaminates.com/
Yamamoto: http://www.yusa.com/
Printed circuit board fabricators:
PCB Directory: https://www.pcbdirectory.com/
The PCB List: http://thepcblist.com/site/pages/home.cgi
Advanced Circuits (prototyping): http://www.4pcb.com/
Asian Circuits: http://www.7pcbassembly.com/
Bare Board Group USA:  http://bareboard.com/
Bittele Electronics Inc.: http://www.7pcb.com/
BusTronic (an Elma company): https://www.elma.com/en/
Cicor Printed Circuit Boards: http://www.photochemie.ch/
Compeq: http://www.compeq.com.tw/
Dalian JY Electronics & Technology Co., Ltd:   www.jycircuitboard.com
Dynamic Details Inc (also formerly Automata; later part of ViaSystems, now TTM): http://www.ttm.com/
Fastprint: http://en.chinafastprint.com/
Zhuhai Founder PCB:   http://founderpcb.en.china.cn/
Merix (was part of Viasystems, now TTM): http://www.ttm.com/
Multek (now part of Flextronix): http://www.flextronics.com/
San Francisco Circuits: http://www.sfcircuits.com/
Sanmina-SCI (also formerly Altron and Hadco): https://www.sanmina.com/contract-manufacturing-design/printed-circuit-boards/
Sierra PCB https://www.protoexpress.com/
TTM Technologies (formerly Honeywell): https://www.ttmtech.com/
Viasystems (now TTM): https://www.ttmtech.com/
WUS: https://www.wus.com.tw/index.php/en/
Würth Elektronik: http://www.we-online.de/web/en/leiterplatten/willkommen_/Willkommen.php
More links: http://www.sxlist.com/techref/pcbfabs.htm
Instruments, probes:
Oscilloscope comparison site https://www.oscilloscopesource.com/SELECTION-GUIDE-All-Oscilloscopes
Advantest: https://www.advantest.com/products/electronic-measuring/
Keysight (was Hewlett Packard, later Agilent Technologies): http://www.keysight.com/
Anritsu (formerly also Wiltron): https://www.anritsu.com/en-US/
Cascade Microtech (probe stations, now part of FormFactor): http://www.cascademicrotech.com/
Core Technology Group (Frequency Response Analyzer): http://www.coretechgroup.com/
Damaskos Inc. (Material measurement solutions, now MuEpsln, LLC.): https://muepsln.com/
D-Coax (probe stations, cable assemblies): http://www.d-coax.com/
GGB Industries, Inc. (Picoprobes): http://www.ggbindustries.com/
GigaTest Labs (probe stations): http://www.gigatest.com/
HS Probe (now PacketMicro):  http://www.packetmicro.com/
Introbotics Corporation (PCB testers): http://www.introbotics.com/
Jmicro Technology (probes, tips, probe stations, now part of Modelithics): https://www.modelithics.com/
LeCroy (now part of Teledyne): http://teledynelecroy.com/
Micromanipulator (probes, probe stations): http://www.micromanipulator.com/
National Instruments: http://www.ni.com/
Omicron Lab: http://www.omicron-lab.com/
Picotest (measurement accessories): https://www.picotest.com/
PI Scanner VNA FPGA IP (Cosmin Jorga's tool): http://piscanner.com/
Probing Solutions, Inc. (probes): http://www.probingsolutions.com/
Rohde Schwartz: http://www.rohde-schwarz.com/
Suss MicroTech (probe stations): http://www.suss.com/
SV1AFN project solutions: https://www.sv1afn.com/projects.html
Synthesis Research (BertScope, now part of Tektronix):  https://www.tek.com/search?keywords=bit%20error%20rate%20tester
Tabor Electronics Ltd. (various signal sources): http://www.taborelec.com/
Tektronix: http://www.tektronix.com/
Low-cost and USB-based instruments:
Akela (bare-bone VNA): https://akelainc.com/
Copper mountain: http://www.coppermountaintech.com/
Lab Nation (open source USB-powered oscilloscope): https://www.lab-nation.com/
Makarov VNA: http://www.makarov.ca/vna_v5.htm
MegiQ:  http://www.megiq.com/
Metro VNA:  http://www.metrovna.com/
Pico Technology (USB oscilloscopes): http://www.picotech.com/oscilloscope.html
PocketVNA: http://www.pocketvna.com/
SDR kits: http://sdr-kits.net/
TiePie (USB oscilloscopes): http://www.tiepie.com