Adafruit
Advantech
Akm semiconductor inc.
Ams
Analog devices inc.
Analog devices inc./maxim integrated
Banner engineering corporation
Broadcom limited
Broadcom/AVAGO
California Eastern Laboratories
Carlo gavazzi inc.
Chau Light
Dfrobot
EG
Excelitas technologies
Finder
Finisar
Honeywell
Hongqi Guang
ifm
Infineon technologies
Infineon/cypress
Inolux
JCHL
JRC
Kemet
Kodenshi
Melexis
Murata electronics
MyDevices
NEWOPTO
Nicera
Nisshinbo
Omron electronics inc-emc div
Onsemi
OPTEK
OSI Optoelectronics
OSRAM
Panasonic
Parallax
Renesas electronics america
ROBOTIS
Rohm semiconductor
Schneider Electric
Seeed
SEMTECH
Senba
SENSORTEK
Sharp
SKYWORKS/SILICON LABS
Slkor
Sparkfun electronics
Stmicroelectronics
TE Connectivity
Texas Instruments
TONYU
Versasense
Vishay siliconix
Zilog