LFXTAL028392

Overview

The LFXTAL028392 is a surface-mount quartz crystal resonator from the HC49/4HSMX series, manufactured by IQD Frequency Products. It operates at a fundamental frequency of 4.9152 MHz with a load capacitance of 18 pF. The component provides a frequency tolerance of ±30 ppm at 25°C and a stability of ±50 ppm across the industrial temperature range of -20°C to +70°C. Key electrical parameters include a maximum equivalent series resistance (ESR) of 130 Ohms and a drive level limit of 500 μW. The device features a compact SMD package with dimensions up to 3.1 mm in height, designed for reliable integration into space-constrained electronic circuits.

Feature Summary

• Provides precise integer division ratios for standard baud rates such as 9600, 19200, and 115200, minimizing serial communication errors.
• Features a hermetically sealed glass-metal construction resistant to thermal shock and vibration.
• Supports direct driving by low-power microcontroller internal oscillators without external buffer circuits.

Applications

• Industrial data acquisition nodes requiring stable serial communication
• Low-power MCU peripheral clock generation
• Sensor networks with long-distance transmission requirements

Procurement Notes

Verify the specific ordering suffix to confirm packaging configuration, as bulk and reel options exist within the same base part number. Ensure the selected variant matches the required load capacitance and stability specifications for the target application environment. Cross-reference the manufacturer datasheet to confirm current production status and any recent part number revisions or obsolescence notices before finalizing procurement.

Selection Notes

Select this component when designing serial interfaces that demand high timing accuracy to prevent data loss over extended distances. The 4.9152 MHz frequency is optimal for generating standard UART baud rates with minimal error. Consider the 18 pF load capacitance requirement when designing the PCB layout, accounting for stray capacitance to ensure accurate frequency operation. Verify that the operating temperature range meets the environmental conditions of the end-use application.

Part Context

This crystal belongs to the HC49/4HSMX series, a widely used form factor for surface-mount quartz resonators. IQD Frequency Products, part of the Würth Elektronik group, specializes in frequency control solutions. This specific model addresses the need for cost-effective yet reliable timing sources in industrial and consumer electronics where standard through-hole components are unsuitable due to space constraints.

Replacement Considerations

Direct substitutes must match the 4.9152 MHz frequency, 18 pF load capacitance, and HC49/SMD package dimensions. Verify that alternative manufacturers offer comparable ESR limits and temperature stability specifications to ensure circuit compatibility without redesigning the oscillator circuit.