1. Consumer Electronics
- Clock Synchronization: Provides a reference clock for MCUs and DSPs. For example, the ESP8266 WiFi module often uses a 16 MHz ceramic resonator.
- Remote Control Carrier Generation: The 38 kHz carrier signal of infrared remote controls is often generated by a ceramic resonator, as it is more resistant to temperature fluctuations than an LC circuit.
2. Industrial and Communications Equipment
- RFID Tags: 125 kHz or 13.56 MHz resonators are used for RF energy conversion, such as in NFC tags.
- Automotive Electronics: Low-speed clock backup circuits (such as 32.768 kHz) in engine ECUs, with high-temperature resistance requirements of -40°C to 125°C (refer to the KDS ceramic resonator datasheet).