Yoke

Crystal: Resonators, Oscillators, Filters, VCTCXO, OCXO, VCO, VCSO/Duplexers. Automotive grade AEC-Q200 qualified.

https://cidevelectronics.com/manufacturers/yoke/

High-stable clock/frequency products and solutions: Crystal Oscillators/Stratum, Clock modules, MCU & PLL chips, IoT modules.

https://cidevelectronics.com/manufacturers/dapu/

Pericom

Crystal and Crystal Oscillator (XO); Programmable XO, VCXO, TCXO / VCTCXO.

SAW filters, duplexers and resonators for Infrastructure, Mobile/ Wireless, Automotive and Military. GPS/WiFi Patch Antenna, Active Antenna and RF modules

ARE

High stability, low phase noise oscillators, (XO, VCXO, TCXO, OCXO), Piezoelectric filters, Synthesized sources, Phase locked sources, High frequency oscillators (1 to 3GHz), Frequency distribution for Military, Professional and Telecommunications

https://cidevelectronics.com/manufacturers/ar-electronics/