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18QHTF21-25.166-OE is listed in the Oscillators range at ChipApex. The manufacturer field lists Mercury Electronics Ind. Co. Ltd. Its product description is 25.166 MHz XO 1.8V 2.0X1.6 MM OE. Review the specifications below when checking this part for your BOM.
The 18QHTF21-25.166-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 25.166 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.
Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints to guarantee proper soldering and mechanical stability during assembly processes.
Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS interface compatibility. The integrated enable feature makes it suitable for battery-powered or power-sensitive designs. Consider the 4-SMD form factor for space-constrained layouts where surface-mount technology is preferred over through-hole alternatives.
This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal oscillators and related timing components. The manufacturer has established expertise in frequency control products since 1973, positioning itself as a pioneer in the Taiwan crystal industry. This series typically targets applications demanding reliable clock signals within compact electronic assemblies.
Direct substitutes include other 18QHTF21 variants with different frequencies such as 18QHTF21-8.640-OE, 18QHTF21-21.200-OE, and 18QHTF21-37.888-OE. These share identical electrical characteristics and physical dimensions, differing only in operating frequency. Cross-reference pinouts and voltage specifications to ensure functional equivalence.
Explore related parts through Crystals, Oscillators, Resonators, all product categories, ChipApex homepage.

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18QHTF21-25.166-OE is listed in the Oscillators range at ChipApex. The manufacturer field lists Mercury Electronics Ind. Co. Ltd. Its product description is 25.166 MHz…
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18QHTF21-25.166-OE is listed in the Oscillators range at ChipApex. The manufacturer field lists Mercury Electronics Ind. Co. Ltd. Its product description is 25.166 MHz…
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18QHTF21-25.166-OE is listed in the Oscillators range at ChipApex. The manufacturer field lists Mercury Electronics Ind. Co. Ltd. Its product description is 25.166 MHz…
Read More18QHTF21-25.166-OE is listed in the Oscillators range at ChipApex. The manufacturer field lists Mercury Electronics Ind. Co. Ltd. Its product description is 25.166 MHz…
Read More18QHTF21-25.166-OE is listed in the Oscillators range at ChipApex. The manufacturer field lists Mercury Electronics Ind. Co. Ltd. Its product description is 25.166 MHz…
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