XTL741-S999-319

Crystals Overview

The Siward XTL741-S999-319 is a surface-mount crystal oscillator designed for precision timing applications. It operates at a fundamental frequency of 32.768 kHz, suitable for real-time clock circuits and low-power digital systems. The component features a standard SMD2012-2P package with dimensions of 2.0mm x 1.2mm. It exhibits a load capacitance of 9pF and an equivalent series resistance (ESR) of 80kΩ. Frequency tolerance is specified at ±20ppm at normal temperature. The device supports an operating temperature range from -40°C to +85°C and complies with RoHS standards.

Crystals Feature Summary

• Ultra-thin and lightweight design optimized for space-constrained mobile devices
• High thermal stability and environmental resistance for reliable operation
• Surface-mount configuration facilitating automated assembly processes

Crystals Applications

• Mobile communication equipment timing
• Wireless application clock sources
• Real-time clock circuits in consumer electronics

Crystals Procurement Notes

Verify the specific suffix 'S999' against the manufacturer's official datasheet to confirm exact electrical parameters and packaging specifications. Ensure compatibility with the target circuit's load capacitance requirements before procurement. Cross-reference the RoHS compliance status with current regulatory standards. Confirm the operating temperature range meets the environmental conditions of the intended deployment scenario.

Crystals Selection Notes

Select this component when a compact 32.768 kHz reference is required for portable electronics. The SMD2012 footprint offers a balance between size and performance. Consider the ±20ppm tolerance for general timekeeping rather than high-precision metrology. Evaluate the 80kΩ ESR against the oscillator circuit's drive level limitations to ensure stable startup and operation.

Crystals Part Context

This part belongs to the Siward XTL741 series of thin-type crystals. The series is characterized by small form factors and high reliability. Similar models include XTL741-S999-298 and XTL741-U11-402, which share the same frequency but may differ in package or tolerance. The series targets the growing demand for miniaturized timing solutions in handheld devices.

Crystals Replacement Considerations

Direct substitutes include other 32.768 kHz crystals in the SMD2012 package with comparable ESR and load capacitance. Verify that alternative parts match the ±20ppm tolerance and -40°C to +85°C temperature range. Check pinout compatibility and mounting orientation to ensure seamless integration without PCB redesign.