LFXTAL003523B

Overview

The LFXTAL003523B is a through-hole quartz crystal manufactured by IQD Frequency Products. It operates at a nominal frequency of 11.0592 MHz in fundamental mode within an HC-49/4H package. Key electrical parameters include a load capacitance of 30 pF, a maximum equivalent series resistance (ESR) of 40 Ω, and a drive level of 1 mW. The component exhibits a frequency tolerance of ±30 ppm and a stability of ±50 ppm over the operating temperature range of -20°C to +70°C. Aging is specified at a maximum of 5 ppm per year.

Feature Summary

• Hermetically sealed construction using resistance welding with glass-to-metal seals on leads for environmental protection.
• Fundamental mode operation providing precise timing signals at 11.0592 MHz.
• Through-hole mounting design compatible with standard industrial PCB layouts.

Applications

• Industrial control systems requiring stable clock references.
• Communication equipment utilizing serial data transmission protocols.
• Microcontroller-based embedded systems needing precise timing sources.

Procurement Notes

Verify that the required load capacitance matches the circuit design, as this unit specifies 30 pF. Confirm that the operating environment stays within the -20°C to +70°C range to maintain the stated ±50 ppm stability. Ensure the driving circuit limits power dissipation to the specified 1 mW maximum drive level to prevent frequency shifts or damage. Check that the physical dimensions fit the designated through-hole footprint.

Selection Notes

Select this component when a fundamental mode crystal is preferred over overtone types for lower phase noise applications. The HC-49/4H package offers robust mechanical stability compared to smaller surface-mount alternatives. Consider the aging rate of 5 ppm/year for long-term precision requirements. The 40 Ω ESR value influences the oscillator circuit design, particularly regarding start-up time and loop gain requirements.

Part Context

This part belongs to the LFXTAL series of quartz crystals from IQD Frequency Products. The series includes various frequencies and packages, with the HC-49/4H variant being a standard industry form factor. These components are designed for general-purpose timing applications where hermetic sealing provides reliability against moisture and contaminants.

Replacement Considerations

Direct replacements must match the 11.0592 MHz frequency, 30 pF load capacitance, and HC-49/4H package. Verify that substitute parts meet the same ±30 ppm tolerance and 40 Ω ESR specifications. Ensure the replacement also supports the -20°C to +70°C temperature range and fundamental mode operation.