SXT21421AA48-40.000M

Crystals Overview

The SXT21421AA48-40.000M is a 40 MHz fundamental mode crystal oscillator manufactured by Suntsu Electronics, Inc. It operates within a frequency stability of ±50 ppm and features a load capacitance of 21 pF with an equivalent series resistance of 100 Ohms. The component utilizes a compact 4-SMD, no-lead surface mount package designed for automated assembly processes. This specific part number denotes the standard operating temperature range variant suitable for general electronic applications requiring precise timing signals.

Crystals Feature Summary

• Fundamental resonance mode operation for stable frequency generation
• Compact surface-mount footprint optimized for high-density PCB layouts
• Standardized load capacitance configuration for common oscillator circuits

Crystals Applications

• Microcontroller clock sources
• Communication module timing references
• Digital signal processing circuit synchronization

Crystals Procurement Notes

Verify the exact suffix designation against the manufacturer's current datasheet to confirm temperature range and tolerance specifications. Ensure that the ordering information matches the required load capacitance and frequency stability parameters for the target application circuit design before finalizing procurement orders.

Crystals Selection Notes

Select this component when a 40 MHz reference signal with ±50 ppm stability is required in a small form factor. Consider the 21 pF load capacitance requirement for oscillator circuit tuning. Evaluate the 100 Ohm ESR against the driving capability of the host microcontroller or oscillator IC to ensure reliable startup conditions.

Crystals Part Context

This crystal belongs to the SXT21421 series from Suntsu Electronics, characterized by its 4-SMD no-lead package style. The series offers various frequency options including 24 MHz and 32 MHz variants, sharing similar physical dimensions and electrical characteristics while differing primarily in resonant frequency and specific tolerance grades.

Crystals Replacement Considerations

Cross-reference with other 40 MHz crystals in the 4-SMD no-lead package format. Verify compatibility regarding pinout, load capacitance, and ESR values. Ensure substitute components meet the same ±50 ppm stability requirement and operate within the specified temperature range for the intended environment.