Isolators / Circulators
- Admotech Inc.
- Advanced Semiconductor Business, Inc. [PTM Corp.]
- Advanced Technical Materials, Inc. [Hi-Technology Trading, Inc.]
- Aerotek Co., Ltd. [Hi-Technology Trading, Inc.]
- AET, Inc.
- AFT Microwave GmbH [Shoshin Corp.]
- AMT, Inc.
- Apollo Microwaves, Ltd. [Hi-Technology Trading, Inc.]
- AWR Japan K.K.
- Channel Microwave Corp. [AET, Inc.]
- Charter Engineering, Inc. [M-RF Co., Ltd.]
- Chronix, Inc.
- Coleman Microwave Company [Midoriya Electric Co., Ltd.]
- Comcraft Corp.
- Comotech Corp. [PTM Corp.]
- Continental Microwave & Tool Company, Inc. [Shoshin Corp.]
- CORNES DODWELL LTD.
- Dorado International Corp. [PTM Corp.]
- Ducommun Technologies, Inc. [Seki Technotron Corp.]
- e2v Technologies PLC. [CORNES DODWELL LTD.]
- Emerson & Cuming Microwave Products, Inc. [M-RF Co., Ltd.]
- Fusoh Shoji Co., Ltd.
- G.T. Electronics Corp.
- Hi-Technology Trading, Inc.
- HXI, L.L.C. [M-RF Co., Ltd.]
- HXI, L.L.C. [Hi-Technology Trading, Inc.]
- Innertron Japan Co., Ltd.
- Keycom Corp.
- L-3 Communications, Narda Microwave-East [Midoriya Electric Co., Ltd.]
- MAJ Co., Ltd.
- MESL Microwave, Ltd. [M-RF Co., Ltd.]
- MICA Microwave Corp. [MAJ Co., Ltd..]
- Microdenshi Co., Ltd
- Microwave Resources Corp. [AET, Inc.]
- Midoriya Electric Co., Ltd.
- Mini-Circuits Laboratory, Inc. [M-RF Co., Ltd.]
- MP Device Co., Ltd. [Y･K Co., Ltd.]
- M-RF Co., Ltd.
- Muegge Electronic GmbH [AET, Inc.]
- Netwell Corp.
- Nextec Microwave & RF, Inc. [PTM Corp.]
- Nihon Koshuha Co., Ltd.
- Passive Microwave Technology [Farad Corp.]
- Pasternack Enterprises, Inc. [M-RF Co., Ltd.]
- PTM Corp.
- R.F. Hitec, Inc. [PTM Corp.]
- RF Micro Devices, Inc. [Midoriya Electric Co., Ltd.]
- Rikei Corp.
- Sangshin Elecom Co., Ltd. [PTM Corp.]
- Sanken Co., Ltd.
- Seki Technotron Corp.
- Shoshin Corp.
- Sonoma Scientific, Inc. [Netwell Corp.]
- SPC Electronics Corp.
- STC Microwave Systems, Arizona [Seki Technotron Corp.]
- Summitek Instruments, Inc. [Seki Technotron Corp.]
- Takitek K.K.
- The Ferrite Company, Inc. [Midoriya Electric Co., Ltd.]
- The Ferrite Components, Inc. [AET, Inc.]
- Toko Denshi Co., Ltd.
- Tokyo Keiki, Inc.
- TRAK Microwave, Ltd. [CORNES DODWELL LTD.]
- Universal Microwave Technology, Inc. [AMT, Inc.]
- Vector Telecom PTY, Ltd. [Netwell Corp.]
- Yokowo Co., Ltd. DS Business Division