Antenna Research
Cushcraft Corp
Gabriel Electronics, Inc
Tecom

Battery Wholesale - lots to sell
Rayovac

Alpha
Belden
Huber & Suhner
Micro-coax - tiny coax
Panduit Electrical Group

catalog

Pasternack
Pomona Electronics - test leads, small boxes, etc.
RF Industries
Richco
Times Microwave

Analog
Avagotech - Avagotech - was Agilent Components
Analog Devices - analog ICs
Diodes, Inc. - includes the old Zetex parts
Fairchild Semiconductor Corp.
Intersil
International Rectifier - diodes, transistors
Linear Technology - linear ICs
Maxim Integrated Products - special-purpose ICs
National Semiconductor Corp. - now Texas Instruments
On Semiconductor
Opamp Labs, Inc.
SemiCOA - mil/space BJTs
Semtech - mostly power management and protection
Texas Instruments

Digital
Actel Corp.
Advanced Micro Devices - processors
Altera Corp. - programmable logic
Cypress Semiconductor - high-speed
Data Delay Devices - digital delay lines, pulse generators
Freescale Semi - mostly ex-Moldy ICs
Intel - crap
Maxim Integrated Products - special-purpose analog/digital
Micrel
Microchip
NXP Semi - was Philips
OKI Semiconductor
On Semiconductor Product Page
Pericom - misc logic
QUALCOMM, Inc. - communications
ST Microelectronics
Standard Microsystem Corp - uP, uC, and ArcNet LAN controllers
Texas Instruments
Toshiba Electronics Components
Xilinx, Inc.
Zilog
Filters
C-Tech
Integrated Microwave - ceramic coax resonators and filters
K&L Microwave, Inc. - filters, switches
Lark
Motorola - Components Product Group - ceramic, SAW, Quartz filters
Raditek - filters, circulators, etc
SIPAT Co, Ltd. - Chinese SAW filters

SIPAT SAW

Tai-SAW Technology
Trans-Technic - ceramic coax resonators and filters
SAWTEK - SAW filters
TTE
Trilithic - RF Filters
Worldbond

Microwave
Anaren Microwave - couplers, mixers, defense stuff, satcom, etc
Centellax
Channel Microwave - circulators, et al.
Dow-Key Microwave - switches
RLC Electronics - switches, filters, diplexers, dividers, etc.
Marki Microwave - mixers mainly
Mica Microwave
Narda Microwave
Nova Microwave
Sage Labs
Spectrum Microwave
Trak Microwave - synthesizers, oscillators, multipliers, mixers, et al.

Misc Components
Aromat - relays
ITT Cannon - switches
Comair Rotron - fans
Communications Instruments - relays
Engineered Components Co - delay lines
LittleFuse - fuses and holders
Genitron - relays
LiteOn - LEDs
Lumex - LEDs
MagneTek
Pico Electronics - power supplies
Power Trends - switching regulators
Teledyne Relays

Oscillators
Epson Electronics America, Inc. - crystals
Connor-Winfield
Fox Electronics - oscillators
Modco
Milliren Technologies, Inc. - OCXOs, VCXOs, etc.
Oscillatek - oscillators
Temex
Valpey Fisher
Wenzel - really low noise oscillators & dividers
ZComm - VCOs from 40MHz to 7.5GHz
Passive
Allen-Bradley - resistors
American Technical Ceramics - capacitors
AVX Corp. - capacitors
Bourns, Inc - resistors, capacitors
ITT Cannon - switches
CTS Corp - resistor networks, oscillators, pots, etc
Coilcraft - inductors
Delevan/SMD Divisions - inductors
Dielectric Labs
Diodes, Inc
Gowanda - inductors
International Manufacturing Services
Florida RF Labs - high-power passives
KOA/Speer
Illinois Capacitor
Panasonic
Presidio Components - space capacitors
Sprague-Goodman
Steward - ferrites, beads, inductors
Toko America - inductors
Vishay

RF
Avagotech - Avagotech - was Agilent Components
Anadigics - wireless parts
California Eastern Laboratories - discretes
Celeritek - wireless ICs
Cougar Components
EM Research - synthesizers
Ericsson
Fujitsu
Hittite - RFICs
Infineon
Intersil
JFW Industries
Johanson Technology - tiny ceramic parts
KDI/Triangle
KMW - RF switches, etc.
M/A-Com
Merrimac - mixers, switches, dividers
Microwave Technology - amps, FETs, ceramic packages
Mini-Circuits - mixers, amplifiers, etc.
MITEQ - various uwave parts and systems
Motorola Semiconductor Products, search page
Peregrine Semi
Pulsar Microwave
Qualcomm - communication ICs
RFHIC
RF Micro-Devices - RF ICs
SiGe - fabless wireless parts
Sirenza
Skyworks - was Alpha Industries - wireless parts
Synergy Microwave
Triquint - RF semiconductors
Watkins Johnson

Tech Notes

Weinshel-Aeroflex

Digital Equipment Corp. - computers
IBM - Itty Bitty Machines
Mentor Graphics Corp. - workstations

Connectors

AEP Connectors
AMP
AMP, Inc.
Berg RF Division.
Corcom - Filtered data/power connectors
Huber-Suhner
Johnson Components - RF connectors
Lemo USA
Leviton - electrical power parts
Mill-Max - interconnect components
Molex, Inc. - power connectors
Phoenix Contact - terminal blocks
Radiall
Samtec - lots of nice stuff
Trompeter Electronics - RF connectors

Hardware and Shields

ADALET Enclosure Systems - lots o' boxes
Compac - RF enclosures
Fotofabrication - punch-out folding shields
Leader Tech - shields w/ snap-on lids
Par-Metal
Techmar Enclosures

Heatsinks

Aavid Thermalloy
Bergquist
Radian Heat Sinks
ThermoCool Corp
ThermaCore
ThermShield
Wakefield Engineering - requires Flash and Exploiter

EDN
Microwave Journal
Microwaves 101
Microwaves & RF
RF Cafe
RF Globalnet Downloads

Java impedance matching with cool animations
John Wetherell's matching networks
Hittite's Java PLL calculator
Hittite's Java mixer spur analyzer
Helical inductor calculator - pretty accurate

3M - things like adhesives and abrasives
Acopian - power supplies
Chomerics - thermal materials
Daniels Manufacturing - crimp tools
Keystone Electronics - testpoints, etc.
Siemens
Arc Technologies - absorbers
Emerson & Cuming - absorbers

Advanced Circuits
Dynamic Details Global
OK Industries
Electronic Interconnect
TTM Technologies

Resource for PCB stuff

Manufacturer list

Laminate Manufacturers
Arlon Materials for Electronics
GIL Technologies
Polyclad - Getek
Rogers Corp
Taconic

Cadence Design Systems - CAD
Compact Software
Eagleware - CAD
Harris EDA
Intusoft
The Math Works, Inc.
National Instruments - instrumentation
ORCAD - CAD
PADS - PC board layout
Sonnet Software
Wolfram Research - Mathematica

NEC, America, Inc.

Aeroflex - combines Weinshel and IFR
Anritsu / Wiltron
Bird Electronic Corp. - power meters, attenuators, loads
Fluke Corp. - lower frequencies
Agilent - Agilent home

HP - Application Note search page
HP - Test&Measurement Home

HP Direct Marketing
Keithley Instruments
LeCroy Research Systems
Micronetics - noise generators
Nicolet Instrument Technologies
Noise/Com - noise generators
Orion Instruments
Picosecond Pulse Labs
Rohde & Schwarz
Telecom Analysis Systems - fading simulators
Tektronix
Wavetek Wandel Goltermann Corp
Yahoo's Listing

Rentals

Electro Rent
Test Equity
Tech Rentals & Services

Allied Electronics
Arrow Semiconductor
Digi-key
Hamilton Hallmark
Jaco Electronics (Columbia, MD)
Mouser
Mid-Atlantic RF Systems, Inc.
Newark Electronics
Penstock
Richardson Electronics
Sel-Tronics