Resistors / Capacitors / Inductors
- Advanced Semiconductor Business, Inc. [PTM Corp.]
- Aeroflex / KDI-Integrated Products [Rikei Corp.]
- Altronic Research, Inc. [AET, Inc.]
- American Technical Ceramics Corp. [Richardson Electronics K.K.]
- AMT, Inc.
- Chronix, Inc.
- Compex Corp. [Nakao Corp.]
- Cornell Dubilier Electronics, Inc. [Richardson Electronics K.K.]
- Dielectric Laboratories, Inc. [Shoshin Corp.]
- Fujitsu, Ltd.
- Fusoh Shoji Co., Ltd.
- GC RFLab Co., Ltd. [Maycom Japan Co., Ltd.]
- Hirai Seimitsu Kogyo Corp.
- Johanson Manufacturing Corp. [Netwell Corp.]
- KEMET [Richardson Electronics K.K.]
- Keycom Corp.
- Linx Technologies, Inc. [PTM Corp.]
- Maycom Japan Co., Ltd.
- Midoriya Electric Co., Ltd.
- Mini-Systems, Inc. [Rikei Corp.]
- MITEQ, Inc. [Shoshin Corp.]
- M-RF Co., Ltd.
- Nakao Corp.
- Netwell Corp.
- Ohmite [Richardson Electronics K.K.]
- Pilkor Electronics Co., Ltd. [PTM Corp.]
- Presidio Components, Inc. [PTM Corp.]
- PTM Corp.
- RH Laboratories, Inc. [Netwell Corp.]
- Richardson Electronics K.K. [Richardson Electronics K.K.]
- Rikei Corp.
- Sangshin Elecom Co., Ltd. [PTM Corp.]
- Shoshin Corp.
- Skyworks Solutions, Inc. [M-RF Co., Ltd.]
- State of The Art, Inc. [Nakao Corp.]
- Syfer Technology, Ltd. [Rikei Corp.]
- Takitek K.K.
- Tecdia Co., Ltd.
- Yantel Corp. [M-RF Co., Ltd.]
- Yokohama Denshi Seiko Co., Ltd.