| # | Name | Location | Applications |
|---|---|---|---|
| 1. | IR FOCUS APS | 🇩🇰 Skødstrup, Denmark | 1 |
| 2. | IRF Medical LLC | 🇺🇸 Norristown, PA, United States | 1 |
| 3. | IRF Semiconductor, Inc. | 🇺🇸 Cupertino, CA, United States | 2 |
| 4. | IRflex Corporation | 🇺🇸 Danville, VA, United States | 3 |