| 2 Passive components |
| 2.4 Radiofrequency and Microwave components |
| 2.4.9 Filters, resonators and oscillators |
| 2.4.9.3 Oscillators |
| 2.4.9.3.1 Crystal oscillators |
| 2.4.9.3.2 VCXO modules |
| 2.4.9.3.3 TCXO modules |
| 2.4.9.3.4 OCXO modules |
| 2.4.9.3.5 Programmable oscillators |
| 2.4.9.3.6 Crystal oscillators, miscellaneous |
| 2.4.9.3.7 Oscillators for SMT |
| 2.4.9.3.8 Tuning-fork oscillators |
| 2.4.9.3.9 Synthesizer modules |
| 2.4.9.3.10 Oscillator modules, miscellaneous |
| 2.8 Piezoelectric components |
| 2.8.2 Piezoceramic wares |