7M-28.224MAAJ-T

Crystals Overview

The TXC Corporation 7M-28.224MAAJ-T is a fundamental mode quartz crystal resonator operating at 28.224 MHz. It features an 18 pF load capacitance and ±30 ppm frequency tolerance. The component supports base harmonic operation with a maximum equivalent series resistance of 60 Ohms and an excitation level of 10 µW. Designed for surface-mount applications, it utilizes a 4-SMD, no-lead package measuring 3.2 mm in length, 2.5 mm in width, and 0.80 mm in height. It operates within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• Ultra-miniature SMD footprint suitable for space-constrained designs
• High stability with ±30 ppm tolerance over the operating temperature range
• Low equivalent series resistance for efficient circuit performance

Crystals Applications

• Clock signal generation for microprocessors and microcontrollers
• Timing references for communication interfaces such as Ethernet and USB
• Frequency standards for digital logic circuits

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's official part number guide to ensure correct load capacitance and tolerance specifications. Confirm that the selected variant matches the required operating temperature range and package dimensions for your PCB layout. Cross-reference the datasheet revision date to ensure compliance with current RoHS and REACH regulatory standards before finalizing procurement orders.

Crystals Selection Notes

Select this component when a precise 28.224 MHz reference is required for synchronous data transmission or processing systems. The 18 pF load capacitance must align with the oscillator circuit design to maintain frequency accuracy. Consider the 60 Ohm ESR limit to ensure reliable startup conditions. The wide operating temperature range makes it suitable for industrial environments where thermal stability is critical for timing integrity.

Crystals Part Context

This part belongs to the 7M series of ultra-miniature crystals from TXC Corporation. The series is characterized by thin profiles and low series resistance, designed for high-frequency applications requiring minimal size. These components are manufactured using advanced quartz cutting techniques to achieve high Q-factors and low phase noise, supporting modern compact electronic device architectures.

Crystals Replacement Considerations

The 7M-28.224MAAE-T is a documented substitute within the same series. Verify that the alternative maintains identical electrical parameters, specifically the 18 pF load capacitance and ±30 ppm tolerance, to ensure circuit compatibility without redesign.