LFXTAL003071

Overview

The LFXTAL003071 is a quartz crystal manufactured by IQD Frequency Products, designed for surface-mount applications. It operates at a fundamental frequency of 4 MHz with a load capacitance of 16 pF and an equivalent series resistance (ESR) of 130 Ohms. The component features a frequency tolerance of ±30 ppm at 25°C and stability of ±50 ppm across the operating temperature range of -10°C to +60°C. Housed in an HC-49/US package measuring 11.30 mm x 4.70 mm x 4.50 mm, it utilizes a base harmonic mode.

Feature Summary

• Hermetically sealed construction using resistance welding within an inert atmosphere
• Glass-to-metal seals on leads ensuring environmental protection
• Surface-mount installation style compatible with automated assembly

Applications

• Industrial low-power data acquisition terminals
• Real-time clock (RTC) timing sources
• Smart home device control circuits

Procurement Notes

Verify that the specific order matches the HC-49/US package dimensions and lead configuration. Confirm the required frequency tolerance aligns with system requirements, as the standard specification allows ±30 ppm at 25°C. Ensure the design accounts for the specified 16 pF load capacitance to maintain accurate frequency performance. Check RoHS compliance status if restricted substances are a concern for the target market.

Selection Notes

Select this component when a hermetically sealed SMD crystal is required for industrial environments. The 4 MHz frequency suits microcontrollers like STM32L4 where moderate precision is sufficient. Consider the 130 Ohm ESR for oscillator circuit compatibility. Evaluate the -10°C to +60°C temperature range against application extremes; wider ranges may require alternative models.

Part Context

This part belongs to the HC49/4HSMX series, representing industry-standard leaded packages adapted for surface mounting. It shares structural similarities with through-hole HC-49/U crystals but offers reflow soldering compatibility. The series emphasizes reliability through inert atmosphere sealing, distinguishing it from non-hermetic general-purpose crystals.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.