SXT32421AA38-27.000M

Crystals Overview

The SXT32421AA38-27.000M is a parallel fundamental quartz crystal oscillator manufactured by Suntsu Electronics, Inc. It operates at a nominal frequency of 27.000 MHz with a load capacitance of 21 pF and an equivalent series resistance (ESR) of 50 Ohms. The component utilizes a ceramic package in a 3225 surface-mount format featuring four pads for enhanced grounding and interference resistance. It offers a frequency tolerance of ±50 ppm and maintains stability within the same range across its specified operating temperature window.

Crystals Feature Summary

• Four-pad surface-mount design providing superior grounding compared to standard two-pad configurations
• Ceramic packaging construction ensuring robust mechanical integrity
• Fundamental AT-cut resonator technology for stable oscillation performance

Crystals Applications

• Industrial wireless gateways requiring high-density board layouts
• PCMCIA interface devices needing compact timing solutions
• Bluetooth and WiFi modules demanding precise frequency control
• Industrial computers and modems operating in controlled environments

Crystals Procurement Notes

Verify the specific load capacitance requirement of your circuit against the 21 pF specification before integration. Confirm that the ±50 ppm tolerance aligns with your system's clock accuracy needs. Ensure the PCB footprint matches the 3225 four-pad outline to guarantee proper soldering and electrical connection during assembly processes.

Crystals Selection Notes

Select this component when a small form factor is critical but higher electromagnetic immunity is required over traditional two-pad crystals. The four-pad structure aids in thermal dissipation and noise reduction. Consider the ±50 ppm tolerance as sufficient for general digital logic clocks but potentially insufficient for high-precision communication interfaces without external calibration.

Crystals Part Context

This part belongs to the SXT324 series, which defines a family of industrial-grade 3225-sized ceramic surface-mount crystals. The series is characterized by its four-terminal configuration, distinguishing it from standard two-terminal variants. It targets applications where space constraints coexist with the need for improved signal integrity and mechanical stability in dense electronic assemblies.

Crystals Replacement Considerations

Direct substitutes must match the 27.000 MHz frequency, 21 pF load capacitance, and 3225 four-pad package dimensions. Verify that alternative manufacturers offer comparable ESR values and temperature stability ranges to ensure circuit compatibility without redesign.