| 2 Passive components |
| 2.1 Inductors and accessories |
| 2.1.1 DC Inductors, Filter reactors |
| 2.1.12 Ignition spark transformers |
| 5 Casing technology |
| 5.3 Small-scale housings |
| 5.3.2 Plastic housings, application-specific |
| 5.7 Electronics protection devices (EMI/ESD) |
| 5.7.5 Packaging materials |
| 5.7.5.1 Packaging materials |
| 5.7.6 Protection components, miscellaneous |
| 5.7.6.1 Suppressor chokes |
| 14 Power supplies |
| 14.2 Coilware for specific applications |
| 14.2.3 Chokes, miscellaneous |