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Product Detailed Parameters
- Description：49.43 MHz XO 1.8V 2.0X1.6 MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：49.43 MHz
- Function：Enable/Disable
- Output：LVCMOS
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：23mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The Mercury Electronics 18QHTF21-49.430-OE is a quartz crystal resonator designed for high-frequency applications. It operates at a fundamental frequency of 49.430 MHz. The component utilizes a surface-mount technology (SMT) package, specifically the 1812 footprint, to facilitate automated assembly and compact circuit board layouts. This resonator is engineered to provide stable oscillation with low phase noise characteristics suitable for precision timing requirements in electronic systems.
Feature Summary
- Surface-mount design for efficient PCB integration
- Fundamental mode operation for precise frequency stability
- Optimized for low phase noise performance
Applications
- High-speed data communication interfaces
- Precision clock generation circuits
- Wireless transmission modules
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to ensure compatibility with required load capacitance and frequency tolerance specifications. Confirm that the package dimensions align with the designated footprint on the printed circuit board. Request the latest datasheet to validate electrical parameters such as equivalent series resistance and operating temperature range before finalizing procurement decisions.
Selection Notes
Select this component based on the requirement for a 49.430 MHz reference signal in space-constrained designs. Ensure the application environment supports the specified operating temperature range. Evaluate the circuit's load capacitance requirements to match the resonator's specifications for optimal frequency accuracy. Consider the SMT package type for compatibility with existing assembly equipment and manufacturing processes.
Part Context
This part belongs to the Mercury Electronics line of quartz crystal resonators, which are widely used in telecommunications and computing industries. The 18QHTF21 series represents a family of surface-mount devices offering various frequency options within a standardized package size. These components are integral to maintaining system synchronization and timing integrity in modern electronic hardware.
Replacement Considerations
Consult the manufacturer's cross-reference guide for direct substitutes. Verify that any alternative component matches the 49.430 MHz frequency, 1812 package dimensions, and electrical characteristics. Ensure the replacement maintains the same fundamental mode operation and phase noise profile to guarantee system compatibility.
