- AAVID
- Abracon
- Absopulse Electronics Ltd.
- ACC Microelectronics Corp.
- Acopian Power Supplies
- Actel
- Adam Tech
- Adaptec
- A/D Electronics, Inc.
- Advanced Components Industries, Inc.
- Advanced-Connectek, Inc. (ACON)
- Advanced Hardware Architectures
- Advanced Interconnections
- Advanced Linear Devices
- Advanced Power Components Ltd. (APC)
- Advanced Power Solutions (APS)
- Advanced Power Technology
- Advanced RISC Machines (ARM)
- Advanced Rubber Concepts (ARC)
- Advanced Technical Materials (ATM)
- Advance International
- AEM, Inc.
- Aeroflex, Inc.
- Aerovox
- AITech International
- AKM Semiconductor
- Alcatel Microelectronics
- Aleph International Corp.
- Allegro Microsystems
- Allen-Bradley/Rockwell
- Alliance Fiber Optics Products, Inc.
- Alliance Plastics
- Alliance Semiconductor
- Allied Components
- Alpha Industries
- Alpha Products, Inc.
- Alpha Wire Co.
- Altech Corp.
- Altera
- AMCC
- AMCO Engineering
- AMD
- AME A/S
- American Bright Opto. Corp.
- American Capacitor Corp.
- American Electronic Components
- American Microsystems, Inc.(AMI)
- American Technical Ceramics Corp. (ATC)
- American Zettler
- Ametherm, Inc.
- AMI
- Amitron
- AMP
- Amperite Co., Inc.
- Amphenol
- Amplifonix
- Anadigics
- Analog Devices (+PMI)
- Anaren Microwave, Inc.
- Anatech Electronics
- Anchor Chips, Inc.
- Anderson Power Products
- Angle Linear
- Antec Power Supplies
- APA Optics, Inc.
- APEM Components
- Apex
- APM Hexseal
- A-Power Electric Co.
- Applied Micro Circuits Corp.(AMCC)
- Aptos Semiconductor Corp.
- ARM
- Arcoelectric Corp.
- Aries Electronics
- Aromat
- Array Microsystems
- Arrick Robotics
- Artesyn Technologies
- Ascent Power Technology
- ASC Semiconductors
- ASIC Semiconductor International
- Associated Components Technology (ACT)
- Astec Power Supplies
- Astrolab, Inc.
- Astron Technology Corp.
- ATC-Frost Magnetics
- ATecoM
- ATI Technologies, Inc.
- Atmel
- ATP Electronics
- Auctor Corp.
- Ault, Inc.
- AuraVision
- Avance Logic
- AverLogic
- AVX
