XTL741-S999-577

Crystals Overview

The XTL741-S999-577 is a surface-mount quartz crystal resonator manufactured by Siward. It operates at a fundamental frequency of 32.768 kHz, which is standard for real-time clock and timing applications. The component features a load capacitance of 7 pF and exhibits a frequency tolerance of ±20 ppm. Its equivalent series resistance (ESR) is specified at 80 kOhms. The device utilizes a 2-SMD, No Lead package configuration, designed for compact electronic assemblies.

Crystals Feature Summary

• Provides stable 32.768 kHz oscillation for precise timekeeping
• Compact 2-SMD no-lead surface mount design
• Operates within industrial temperature range of -40°C to +85°C

Crystals Applications

• Real-time clock circuits in consumer electronics
• Microcontroller system timing references
• Portable battery-powered devices requiring low power consumption

Crystals Procurement Notes

Verify the specific suffix code against official Siward documentation to confirm exact electrical parameters. Ensure compatibility with existing PCB footprint and reflow soldering profiles. Cross-reference datasheet values for load capacitance and ESR to guarantee circuit stability. Confirm availability through authorized channels to prevent counterfeit components.

Crystals Selection Notes

Select this component when a 32.768 kHz reference is required for low-frequency timing. The 7 pF load capacitance must match the oscillator circuit design. Consider the 2-SMD package size for space-constrained layouts. Verify that the ±20 ppm tolerance meets the system's accuracy requirements.

Crystals Part Context

This part belongs to Siward's XTL741 series of thin-type crystals. The series focuses on ultra-small form factors suitable for modern miniaturized electronics. The S999 suffix indicates specific packaging and parameter variations within the product line. These components are engineered for high reliability in mass-produced devices.

Crystals Replacement Considerations

Check for direct substitutes from other manufacturers offering identical 32.768 kHz frequency, 7 pF load capacitance, and 2-SMD dimensions. Ensure replacement parts meet the same ±20 ppm tolerance and ESR specifications. Verify thermal range compatibility before integration.