XTL741-S999-576

Crystals Overview

The Siward XTL741-S999-576 is a surface-mount quartz crystal resonator designed for precision timing applications. It operates at a fundamental frequency of 32.768 kHz with a standard load capacitance of 12.5 pF and an equivalent series resistance (ESR) of 80 kOhms. The component features a compact SMD package measuring 2.00 mm in length, 1.20 mm in width, and a maximum seated height of 0.60 mm. It supports an operating temperature range from -40°C to +85°C.

Crystals Feature Summary

• Ultra-thin profile design suitable for space-constrained PCB layouts
• High stability frequency output for accurate timekeeping
• Robust construction ensuring reliable performance across wide temperature variations

Crystals Applications

• Real-time clock circuits in portable electronics
• Timekeeping modules in smart home devices
• Low-power embedded system oscillators

Crystals Procurement Notes

Verify the specific suffix code against official SIWARD documentation to confirm exact electrical tolerances and packaging specifications. Ensure compatibility with reflow soldering profiles defined in the manufacturer's datasheet. Cross-reference the part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Crystals Selection Notes

Select this component when a low-profile 32.768 kHz oscillator is required for compact consumer electronics. The 12.5 pF load capacitance matches common microcontroller internal oscillator configurations. Consider the 80 kOhm ESR limit when designing the oscillator circuit to ensure stable startup conditions within the specified thermal range.

Crystals Part Context

This model belongs to the XTL74 series of thin-type crystals developed by Siward Crystal Technology. The series focuses on miniaturization while maintaining high-frequency stability. The 2012 package size represents a standard footprint for modern surface-mount assembly processes, facilitating automated placement in high-volume manufacturing environments.

Crystals Replacement Considerations

Direct substitutes include other manufacturers' 2012-sized 32.768 kHz crystals with matching 12.5 pF load capacitance and similar physical dimensions. Verify that alternative parts meet the same -40°C to +85°C operating temperature range and frequency tolerance requirements.